Day 2 :
Keynote Forum
Bo Mattiasson
Lund University, Sweden
Keynote: Robust, high resolution affinity capture of environmental pollutants
Time : 10:00-10:30
Biography:
Bo Mattiasson is Professor Emeritus in Biotechnology at Lund University, Sweden. He has supervised more than 75 students to their PhD. He has published more than 750 papers in peer reviewed journals concerning enzyme technology, bioseparation, microbiology, bioanalysis and environmental technology, esp. production of biogas from surplus biomass, treatment of industrial wastewaters and lately monitoring and capturing trace pollutants from wastewater. He is Editor in Chief for Biotechnology Reports. He started biotech companies dealing with biosensors (CapSenze Biosystems AB), biorefinery, environmental biotechnology (Indienz AB).
Abstract:
Emerging pollutants are causing severe environmental problems. Many new pollutants appear at low concentrations, but because of their physiological effects major effects on ecosystems can be seen, in spite of the trace amounts present. Endocrine disruptors constitute one group of chemicals that have hormonal effects on many animals, and even human beings. Much effort has been spent on monitoring the level of pollution, but less on strategies to combat the threat. Because of the very low concentrations, many of the emerging pollutants, hormone active substances, pesticides, pharmaceuticals, flame retardants etc. pass untreated through the wastewater treatment plant (WWTP) and get released to the recipient. Pharmaceutical biotechnology operates with high resolving separation technology. In an effort to transfer this to environmental technology, one needs to identify the hurdles to overcome: selectivity; robustness of the affinity receptor and; improved compatibility of the adsorbents with the harsh conditions in wastewater. For this matter we used molecularly imprinted polymers (MIPs) as affinity receptors. These are made of robust polymer material, but have still excellent selectivity and very good affinity for the targets. The MIPs were introduced into a composite cryogel with large pores. This makes it possible to handling crude feed stocks, even with microbial cells present. In order to stabilize the composite gels, they were placed in plastic housings, similar to what is used for cultivation of microbes in WWTP. Plastic housings of different sizes or shapes make it possible to separate composites that have captured different types of pollutants. After regeneration, the adsorbent is ready for a new cycle. When treating effluent from the WWTP in Lund municipality, one could enrich endocrine disruptors and release water where no traces of the pollutants could be detected. MIPs have also been used as recognition elements when designing biosensors for environmental monitoring.
Schematic presentation of plastic housings filled with MIP-containing cryogels used in a fluidized bed.
- Environmental Chemistry and Engineering | Environmental Education | Earth and Geochemistry | Chemical and Polymer Engineering | Environmental Climatic Factors | Environmental Health | Environmental Ecosystems | Environmental Technologies and Sustainability Metrics | Green Chemistry | Energy Storage & Conversion | Environmental Chemistry & Pollution Control | Energy & Environment
Location: Sylt 3
Co-Chair
Raquel Jimenez-Melero
Universidad de Jaen, Spain
Session Introduction
Emmanuel C Besa
Thomas Jefferson University, USA
Title: New opportunities in a personalized approach to the preleukemic phase of myelodysplastic syndrome and acute myelogenous leukemia
Time : 11:50-12:10
Biography:
Emmanuel C Besa completed his MD from the University of the Philippines, College of Medicine, finished his postdoctoral studies from the University of Pennsylvania at Presbyterian Medical Center in Hematology and Oncology. He joined the faculty of the Medical College of Pennsylvania as an assistant professor and promoted to full professor in 1994 and tenure in 1995. The institution evolved into the Drexel University College of Medicine by 2004. He moved to Thomas Jefferson University as Professor of Medicine and Medical Oncology, Kimmel Cancer Center as part of the Division of Hematologic Malignancies and Hematopoietic Stem Cell Transplantation program. He was an active member as part of the Educational Committee of the American Society of Hematology and has designed case teaching which is available at the ASH website. He was awarded the MDS Center of Excellence by the MDS Foundation in 2000 at Drexel and 2005 at Jefferson. He recently retired from his academic position in June 30, 2013 but continues to conduct CME lectures and is active as the Hematology Editor of Medscape Emedicine, an online medical text which is peer reviewed.
Abstract:
Although not all patients with myelodysplastic syndrome (MDS) evolve into acute myelogenous leukemia (AML), it is generally believed that these patients if they survive long enough will eventually transform and was in the past named as a preleukemic syndrome. Basic knowledge regarding the molecular mechanism of the evolution of MDS into AML, development of epigenetic and immunomodulatory agents in its management may give us opportunities of better management of the disease as well as opportunities to prevention of its evolution to a fatal condition given the right circumstances. Continued improvement in classification and prognostication by inclusion of new data including cytogenetics and molecular markers, we are now able to tailor specific treatment for subgroups of patients who share similar diagnostic labels but differ in pathogenesis as indicated by their molecular markers leading to a more specific and personal approach to their management. A specific example in MDS is the presence of a cytogenetic abnormality ie. del5q which is responsive to a specific immunomodulatory agent called lenalidomide (an analogue of thalidomide). This syndrome which for the past decade had no standard therapy that prolonged survival has now shown a doubling overall survival with azacytidine, a demethylating agent. Meanwhile in AML, specific cytogenetic abnormalities have led to a completely different approach such as using a retinoid and arsenic trioxide for acute promyelocytic leukemia (APL) with the specific cytogenetic abnormality of a translocation 15;17. We also now identified AML patients with cytogenetic abnormalities of the core binding factor such as inverted 16 as a good prognostic marker and treated specifically with standard induction and high dose cytosine arabinoside consolidation. The intermediate group in AML with normal cytogenetics is a mixture of good and bad prognostic patients and with the help of molecular markers such as FLT3/ITD and NPM markers, we are able to tease out the good from the bad and plan out a more specific approach to their management. We an also identify up front patients who will not respond to our available therapies and should be prepared early for possible hematopoietic stem cell transplantation. The latter has evolved so that we can now push this form of treatment to include some of our elderly patients using less aggressive non-myeloablative approaches and using graft versus leukemia effects to our advantage.
Abd El-Aziz Ahmed Said
Assiut University, Egypt
Title: Influence of sonication on the catalytic activity of CuxCo3−xO4 nanocatalysts for conversion of CO into CO2 efficiently
Time : 12:10-12:30
Biography:
Abd El-Aziz Ahmed Said completed his PhD from Assiut University and Postdoctoral studies from Tokyo Institute of Technology, Japan. He is the Director of Material Science and Nanotechnology Center, Faculty of Science and Former Dean of Faculty of Science, Assiut University. He has published more than 110 papers in reputed journals and has been serving as Editorial Board Member of repute.
Abstract:
In this work, the incorporation of CuO into Co3O4 (CuxCo3−xO4, 3.0≤x≥0.0) is presented as promoter to obtain highly active and stable nanocatalysts towards the catalytic conversion of CO into CO2. The pure and mixed oxides were prepared by co-precipitation-sonication method using K2CO3 as precipitant. The catalysts were characterized by TG-DTA, XRD, BET, HRTEM, electrical conductivity and surface chemisorbed oxygen measurements. The results revealed that the addition of CuO (x=0.0-0.75) to Co3O4 monotonically increases the specific surface area, the amount of surface chemisorbed oxygen, electrical conductivity and catalytic activity of the nanocatalysts. The role of the active redox sites existed in these nanocatalysts such as Co3+/Co2+, Cu2+/Cu+ and Co3+/Cu+ which are responsible for such modification was discussed. In addition, the catalytic activity indicated that Cu0.75Co2.25O4 nanocatalyst calcined at 400℃ exhibited the highest catalytic activity with total conversion of CO into CO2 at 125℃. Furthermore, the CuxCo3−xO4 catalysts also display high catalytic long-term stability. Finally the effects of various operational parameters were also studied.
Guillermo J Rincon
University of New Orleans College of Engineering, USA
Title: Electro-coagulation/flotation for the simultaneous removal of oil and grease and heavy metals from artifitial bilge water
Time : 12:30-12:50
Biography:
Guillermo J Rincon is an Assistant Professor of Civil and Environmental Engineering at the University of New Orleans in New Orleans, Louisiana. He has completed his PhD in Environmental Engineering and MS in Engineering at the University of New Orleans, and BSc in Chemical Engineering at La Universidad del Zulia in Venezuela. He has over 10 years of experience in produced water treatment and recovery and has conducted research in advanced treatment technologies for wastewater remediation, dealing specifically with applications of electrocoagulation, electrodisinfection and UV and solar photocatalysis.
Abstract:
The research presented herein discusses the feasibility of using electro-coagulation (EC) as a method to treat bilge water discharges, with an emphasis on emulsified oil and heavy metals (copper, nickel and zinc) removal. EC experiments were conducted using a bench-scale continuous-flow reactor (manufactured by Ecolotron, Inc.) and a synthetic oily emulsion as experimental fluid. The as-synthetized bilge water contained 5000 mg/L of oil and grease 5 mg/L, 1.5 mg/L and 2.5 mg/L of copper, nickel and zinc respectively. Experimental results showed high removal efficiencies for oil and grease, specially when using a combination of carbon steel and aluminum electrodes. Operating the bench-scale reactor to allow for 1 min retention time and 0.6 A/cm2 produced pre-filtration effluent concentrations of oil and grease of less than 10 mg/L. High removal effciencies were also observed for heavy metals. 99% removal of zinc and 70% removal for copper and nickel resulted from using the same carbon steel and aluminum electrodes, retention time of 1 minute and a current of 7.5 A.
Raquel Jimenez-Melero
Universidad de Jaen, Spain
Title: Mediterranean small ponds: One of the most threatened ecosystems in the world
Time : 12:50-13:10
Biography:
Raquel Jiménez-Melero is Assistant Teacher in the Department of Animal Biology, Plant Biology and Ecology at the University of Jaén, Spain and Member of the research team called Ecology and Biodiversity of Aquatic Systems. Her aim of the study is the wetlands in general and the zooplankton in particular. In order of understanding, as these ecosystems are going to face the global change, she studied the zooplankton communities respond to the environmental variables and the contaminants. She combines her love for the ecology with her passion for the environmental education and the science popularization.
Abstract:
Important conservation efforts are often directed to protect emblematic species or biomes whereas; small closest and less majestic habitats are usually forgotten. That is the case of small ponds. Despite of the great biodiversity they shelter and of their indubitable social and ecological value, these ecosystems are one of the most threatened ecosystems in the world. The value of these ecosystems is incalculable. Among the goods and services they provide, it would have to highlight the regulation of aquifer loading and unloading, brine and salt supply, flood control, carbon sequestration, water storage, regulation of nutrients cycles, production/recycling of organic matter, sediment retention, source of great biodiversity, green tourism, spiritual enrichment and aesthetic experiences and so on. In the particular case of the Andalusian ponds, South Spain as in other parts of the world, the main threats of these ecosystems are climate change, drainage and ploughing to increase cultivable areas, wetlands siltation due to the high soil losses because of the olive growing, increase or decrease of salinity as a result of irrigation techniques adopted and contamination with pesticides, herbicides and drugs. Of particular concern is the latest threat mentioned, since it affects not only wetlands but also reservoirs whose water is for human consumption. In this plenary talk, we want to briefly show the knowledge acquired by our research group after two decades of studying these valuable ecosystems and the strategies we have carried out to make their values known to different sectors of society.
Figure 1: Modification of zooplankton community structure as respond to changes on environmental variables. Dots indicate percentage of contribution of each taxon to the similarity in every treatment estimated with a SIMPER analysis.
Recent Publications
- Gilbert J D, de Vicente I, Ortega F, García-Muñoz E, Jiménez-Melero R, Parra G and Guerrero F (2017) Linking watershed land uses and crustacean assemblages in Mediterranean wetlands. Hydrobiologia 799(1):181–191.
- Parra G, Galotti A, Jiménez-Melero F, Guerrero F, Sanchez-Moyano E, Jiménez-Gómez F and Conradi M (2016) Effects of experimental long-term CO2 exposure on Daphnia magna. Chemosphere 156:272-279.
- Gilbert J D, de Vicente I, Ortega F, Jiménez-Melero R, Parra G and Guerrero F (2015) A comprehensive evaluation of the crustacean assemblages in southern Iberian Mediterranean wetlands. Journal of Limnology 74(1):169-181.
- Jiménez-Melero R, Gilbert J D and Guerrero F (2014) Seasonal variation in the sex ratio of Arctodiaptomus salinus (Copepoda:Calanoida): Does it agree with the “cheaper-sex” hypothesis? Journal of Plankton Research 36(6):1413–1418.
- Gilbert J D, de Vicente I, Jiménez-Melero R, Parra G and Guerrero F (2014) Selecting priority conservation areas based on zooplankton diversity: the case of Mediterranean wetlands. Marine and Freshwater Research 65(10):857–871.
Guohua Luo
Tsinghua University, China
Title: A green PVC dream is coming true in China: Heterogeneous non-mercury catalysts and related process for acetylene hydrochlorination
Time : 13:55-14:15
Biography:
Guohua Luo is an Associate Professor in the Department of Chemical Engineering, Tsinghua University. His research interest covers from fundamental level by lab-scale experiments to potential industrial applications on novel solid catalysts design and evaluation, gas-solid fluidized-bed reactors for carbon nanotubes, DeNOx process, catalytic synthesis of fine chemicals and green nano-gold@carbon (non-Hg) catalyst for PVC industry. He has published over 90 peer-reviewed academic papers which have been cited over 2000 times. He received three first prizes, from the Ministry of Education of China in natural science (2005) and technology invention (2012), from Chinese Union of Petroleum and Chemical Industry in science and technology progress (2015).
Abstract:
Acetylene hydrochlorination to produce VCM (vinyl chloride monomer) is the core reaction for PVC production from coal resource, and this process was taking about 80% market share in 2016 in mainland China. On the other hand, traditional activated carbon based mercury catalyst are widely used commercially and causes severe environmental pollution and social impact day and night. In recent years, R&D on non-Hg catalyst has drawn increasing attention in China from both academic and industrial fileds and even policy-makers. In the last half-century, scientists worldwide have proved that many kinds of metals can be active for this reaction, and among them gold is widely considered as the most active metal for replacing Hg. Smart non-Hg catalyst with both high activity and long lifetime, and related new process with simple design and low operation cost, will show the best potential for future industrial application. In the last ten years, we have proved that the reaction stability of Au-Cu@carbon catalyst can be dramatically enhanced by the introduction of organic ion ligands. Several ligands were selected and trichloroisocyanuric acid (TCCA) was proved to be the best organic ion ligand for preventing Au3+ from reduction by acetylene, leading to over 18000 hour’s industrial plant-trial evaluation record, and the VCM productivity reached 4.2 times comparing to industrial mercury catalyst. Meanwhile, DFT calculation results also show that the stability of catalyst is strongly related to the adsorption energy of reactants on the surface of catalysts. Finally, our previous fluidized beds process using Bi-Cu@SiO2 catalyst will also be discussed in this talk. The dream for green PVC is coming soon in China.
Recent Publications
- Hao Xu, Kai Zhou, Jiangkun Si, Chunhua Li and Guohua Luo (2016) Ligand coordination approach for high reaction stability of an Au-Cu bimetallic carbon-based catalyst in acetylene hydrochlorination process. Catalysis Science & Technology 6:1357-1366.
- Kai Zhou, Jinchao Jia, Chunhua Li, Hao Xu, Jun Zhou, Guohua Luo and Fei Wei (2015) A low content Au-based catalyst for hydrochlorination of C2H2 and its industrial scale-up for future PVC processes. Green Chemistry 17(1):356-364.
- Kai Zhou, Wei Wang, Zhun Zhao, Guohua Luo, Jeffrey T Miller, Michael S Wong and Fei Wei (2014) Synergistic gold bismuth catalysis for non-mercury hydrochlorination of acetylene to vinyl chloride monomer. ACS Catalysis 4(9):3112-3116.
- Kai Zhou, Jiangkun Si, Jinchao Jia, Jiaqi Huang, Jun Zhou, Guohua Luo and Fei Wei (2014) Reactivity enhancement of N-CNTs in green catalysis of C2H2 hydrochlorination by a Cu catalyst. RSC Advances 4(15):7766-7769.
- Kai Zhou, Jinchao Jia, Xiaogang Li, Xiaodong Pang, Chunhua Li, Jun Zhou, Guohua Luo and Fei Wei (2013) Continuous vinyl chloride monomer production by acetylene hydrochlorination on Hg-free bismuth catalyst: From lab-scale catalyst characterization, catalytic evaluation to a pilot-scale trial by circulating regeneration in coupled fluidized beds. Fuel Processing Technology 108(SI):12-18.
Hao Xu
Tsinghua University, China
Title: Green production of PVC from lab to industrialization: Heterogeneous non-mercury catalysts for acetylene hydrochlorination
Time : 14:15-14:35
Biography:
Hao Xu received his Bachelor’s degree in 2014 from Tsinghua University, Beijing, China with a major of Chemical and Industrial Biological Engineering. He is currently a PhD candidate in the Department of Chemical Engineering, Tsinghua University, China. He is working on the development of non-mercury catalysts for acetylene hydrochlorination process and corresponding reactor design & simulation. He also devotes himself to the industrialization of the process and the developed catalysts have been working on pilot-trial equipment for over 18000 hours.
Abstract:
Acetylene hydrochlorination is the main reaction for the dominant process for VCM (vinyl chloride monomer) production from coal resource in mainland China. The traditional activated carbon based mercury catalyst for this reaction causes severe human damage and environmental pollution. Gold is widely considered as the most active metal for acetylene hydrochlorination reaction and copper is the most common metal with cost-effective advantage. The combination of two metals shows the best potential for environmentally friendly non-mercury catalysts. In our study, the performance of Au/Cu catalyst was dramatically enhanced by the introduction of organic ion ligands. Several ligands were studied and trichloroisocyanuric acid (TCCA) was proved to be an effective ligand for preventing Au3+ from reduction by acetylene, leading to longer catalyst lifetime. The findings were successfully verified by over 18000 hour’s industrial plant-trial evaluation, and the VCM productivity reached 4.2 times comparing to industrial mercury catalyst. Abundant characterization methods including TEM, XRD, TPR, XPS, ICP-AES and nitrogen adsorption-desorption were carried out to reveal the factors which affect the activity and stability of catalysts. Meanwhile, DFT calculation results also illustrated the stability of catalyst is strongly related to the adsorption energy of reactants on the surface of catalysts. Further, reaction and deactivation kinetics of acetylene hydrochlorination reaction was studied and a model was built to simulate the performance of catalyst in long term industrial reactors by limited laboratory data. We have great confidence that the extensive application of non-mercury catalysts can be realized in few years.
Ime Akanyeti
Cyprus International University, Turkey
Title: Competitive sorption of anionic dyes on CoFe-layered double hydroxide in single and binary solutions
Time : 14:35-14:55
Biography:
Ime Akanyeti obtained her Environmental Engineering Degree from Marmara University, Ä°stanbul, Turkey in 2005. After she received her Master’s Degree in Environmental Sciences in Wageningen University, 2007; she has worked as a Researcher in Wetsus, Centre of European Centre of Excellence for Sustainable Water Technology in the Netherlands for about a year. She has completed her PhD degree in Edinburgh University, Scotland in 2013. She obtained a position as a Lecturer in February 2014 and Assistant Professor in July 2014 in Department of Environmental Engineering at Cyprus International University. She has published several papers in reputed journals.
Abstract:
The synthetic dyes released by the effluents of various industries result in severe environmental pollution that may cause carcinogenic and mutagenic effects on living organisms. Layered double hydroxides (LDH) were extensively studied as high capacity sorbents for the removal of dyes from water. However, a comprehensive understanding of why one dye is sorbed more than the other still remains unknown. In addition, we know very little how sorption mechanisms scale when more than one dye is present in the solution. In this study, a comparative investigation was performed to evaluate the sorption capacity of CoFe LDH for three different dyes: methyl orange (MO), remazol brilliant blue reactive (RBBR) and allura red (AR). Moreover, to shed light on the competitive sorption mechanisms, the sorption behaviour of CoFe LDH in a binary dye solution of MO and RBBR was elucidated. The results indicated that the sorption affinity of CoFe LDH is the highest for MO (750 mg/g) followed by RBBR (155 mg/g) and AR (~83 mg/g), respectively. Sorption of MO on CoFe LDH is best described by the Freundlich isotherm model whereas the Langmuir model has the best fit for RBBR and AR sorption. Fourier-transform infrared spectroscopy and LDH charge analysis results showed that ion exchange mechanism and electrostatic interactions play important roles in dye sorption. In a binary solution, the mass of MO sorbed was reduced significantly while the mass of RBBR sorbed did not change, which was attributed to the alteration of the electrostatic properties of the LDH after the sorption.
Nadia El Ouahedy
University of Poitiers, France
Title: Activated carbons preparation from olive stones for bisphenol A and Diuron adsorption
Time : 16:10-16:30
Biography:
Nadia El Ouahedy is a 2nd year PhD student in University of Chouaib Doukkali in Morocco and University of Poitiers in France working on depollution of water by hybrid system as a part of the Project PHC Maghreb 2016. She is doing the preparation of adsorbents from olive waste providing from Morocco, such as the charcoal prepared by the hydrothermal carbonization process at Triers University in Germany, and activated carbon at University of Poitiers in France and Oulu University in Finland, to apply them for the adsorption of bisphenol A and Diuron followed by a catalytic oxidation of those pollutants.
Abstract:
Olive stones are an agricultural waste from the olive oil industry and represent one of the most abundant renewable resources in Mediterranean areas. In addition, much attention is paid to water quality and removal of persistent organic pollutants as the well-known endocrine disruptor bisphenol A (BPA) or the herbicides such as Diuron. So, the aim of this study was to explore the possibility of using this biomass for the preparation of activated carbon (AC) for BPA and Diuron adsorption from polluted waters. The AC was prepared according to the method of chemical activation and pyrolysis. To optimize the performances of the obtained materials (expressed in terms of adsorption capacity), the effect of main preparation parameters was studied, such as pyrolysis temperature, activating agent and mass ratio. The prepared AC were characterized by DRX, FTIR, SEM, N2 adsorption-desorption and CHNS. Simultaneously, a study was performed on the effects of temperature, pH solution, and initial concentration on the removal efficiency for our targeted pollutants. Further, simplified kinetic models (pseudo-First-order and pseudo-Second-order) were tested to investigate the adsorption behaviors and Freundlich and Langmuir models to analyze the adsorption equilibrium. Promising performances were pointed out as 70% of Diuron and 92% of BPA can be removed from aqueous solution for an initial concentration respectively 35 mg/L and 20 mg/L, when the usual concentrations of BPA in environmental waters are in the range of 10 ng/L to 400 μg/L and Diuron is around 1600 ng/L. Adsorption on AC has many advantages because it converts agricultural waste to useful added-value adsorbent and proposes a low operating cost, easy use, simple design but efficient technique. To achieve a complete process of remediation, we check the possibility to desorb pollutants from AC and to oxidize them through VOC’s catalytic treatment
Rouzbeh Asadi Khansari
Technical and Vocational University, Iran
Title: The effects of biodegradable coating on properties of printing paper
Time : 16:30-16:50
Biography:
Rouzbeh Asadi Khansari is a Lecturer in the Faculty of Sowmeh Sara, Department of Wood and Paper Industry at the University of Technical and Vocational, where he has been a Faculty Member since 1997. He is the Head of Wood and Paper Industry Department. He has completed his PhD at Gorgan University and his Undergraduate studies at Tarbiat Modares University (TMU). His research interests lie in the area of coating of papers by biopolymers and nano fibers and biotechnology for pulp and paper, ranging from theory to design to implementation. He has collaborated actively with researchers in engineered wood and fibers composites, particularly wood modification on problems at the panel/fiber interface.
Abstract:
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Rouzbeh Asadi Khansari, Mohammadreza Dehghani Firouzabadi and Hossein Resalati (2017) The effect of coatings and coating weight by two types of PCC on barrier and optical properties and roughness of paper. Iranian Journal of Wood and Paper Industries 8(2):283-295.
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Asadi Khansari R, Dehghani Firouzabadi M R and Resalati H (2017) Fluting and kraft liner papers with GCC coatings and PVA binder. Journal of Wood and Forest Science and Technology 24(1):145-160.
Theophilus Clavell Davies
University of Nigeria, Nigeria
Title: Medical geology applications of an African geochemical database
Time : 16:50-17:10
Biography:
Theophilus Clavell Davies is a Chartered Geologist who currently holds the position of Visiting Professor of Medical Geology at the University of Nigeria at Nsukka. His teaching and research activities encompass three main themes: combating environmental health impacts of mining in Africa; isolating and obviating the effects of climate change on human health in African megacities, and improvement of ethical standards in African geoscience practice. His work includes field and laboratory studies, and has led to a wide range of publications (over 200), including Editorship of five special issues of high impact journals. Before joining the Department at Nsukka, he was a Research Professor in the Faculty of Natural Sciences at the Mangosuthu University of Technology in South Africa. He is the recipient of several distinguished fellowships and research awards, including the prestigious Alexander von Humboldt Foundation Fellowship of Germany and the 2014 NMGS Shell Petroleum Award. He holds (or has held) executive positions in a number of international geo-scientific steering committees such as: Member of the Governing Council and Board of Trustees of the Geological Society of London (1996-2000); Member of the Scientific Board of the UNESCO International Centre for Global-Scale Geochemistry (2016-2021), Regional Councillor for Africa of the Association of Applied Geochemists (2006-Present) and Councillor for Geoscience of the International Medical Geology Association (2011-2015).
Abstract:
The significance of a complete, high quality African geochemical database (AGD) for addressing the range of Earth and environmental science issues (e.g., mineral exploration, resource evaluation, agriculture, land use planning, processes of crustal evolution, modeling of environmental systems) cannot be over-emphasized; because, for such applications to be made in a robust fashion, we need to understand how the region’s unique and complex geochemical landscape was carved out in the first place. The distinctive nature of Earth processes such as intense tropical weathering, leaching, erosion, podsolization and gleying, as well as later imprints of urbanization and industrialization, have engendered the mobilization and clear redistribution of all but the most refractory elements. As a consequence, it is not uncommon to find large tracts of the continent’s surface environment containing anomalous trace element contents or deficiencies in essential micro-nutrient elements. Through water and food crops, extremes in trace element variation in soils are transmitted into the food chain, with often undesirable consequences for human and animal health. It is thus considered that one of the most important applications of an AGD would be in understanding the hydrological, chemical and biological processes that determine the behaviour of nutritional and toxic elements in the surface environment, in relation to how they may affect the health of man and animals (Medical Geology). This is so, because most of Africa’s population still live close to the land, and depend on it for their daily sustenance. Important scientific problems that would confront the construction of an AGD include defining and understanding regional background and the evolution of appropriate sampling and analytical protocols that would take into account the regions’ unique and complex element distribution patterns in the surface environment. These problems are apparently intractable, but are not unsolvable. Longstanding operational and logistical problems that have impeded previous (largely uncoordinated) efforts at an AGD compilation include the limited availability of state-of-the art analytical instrumentation and requisite laboratory infrastructure. An even more important limitation is the dearth of a sufficient number of highly skilled analytical geochemists and other technical personnel located at appropriate regional centers, which are able to install, operate, trouble-shoot and maintain modern analytical equipment. These problems are compounded by the lack, up to now, of adequate international funding to undertake such a high precision and systematic mapping exercise. In this presentation, recommendations are put forward for carrying out a successful and complete compilation of a high quality AGD that would be invaluable for studies in Medical Geology, as well as in an array of other multipurpose, multi-national environmental applications; and proposed measures given for counteracting potential limitations in its development.
Zahra Gholami
Tsinghua University, China
Title: Selective catalytic reduction of NOx by CO under oxygen condition over Cu:Ce catalysts supported by carbon nanotubes
Time : 17:10-17:30
Biography:
Zahra Gholami is currently a Postdoctoral Fellow in the Department of Chemical Engineering at Tsinghua University, China, where she works on selective catalytic reduction of NOx. She has completed her Bachelor’s, Master’s and Doctorate in Chemical Engineering. From 2014 to 2016, she continued her research work as a Postdoctoral Researcher at Universiti Teknologi Petronas, Malaysia. She has published 20 original research papers in reputed journals and served as Manuscript Peer Reviewer for several journals. Her research interests includes Catalysis, Heterogeneous Catalysts, Reaction Engineering and Environmental Engineering.
Abstract:
Flue gas DeNOx process with no ammonia under oxygen condition and moderate temperatures is an ideal process with low cost, but is very challenging. In this work, catalytic activity of a series of carbon nanotubes (CNT) supported catalysts with different molar ratios of Cu:Ce prepared by co-impregnation method were studied for NO reduction by CO. Physicochemical properties of the catalysts were studied by means of SEM, TEM, XRD and XPS. The catalytic performances of these catalysts were evaluated through reduction of NO by CO. The 20wt.% Cu1:Ce3/CNT catalyst shows the highest NOx conversion of 96% at 220°C. Compared to some literatures results, the catalytic activity of the CNT-supported catalysts was significantly enhanced due to the synergistic interactions between Cu:Ce and good properties of CNTs such as high mechanical strength and electrical and thermal conductivity, adsorption and unique nanostructure. The redox equilibrium (Cu2++Ce3+↔Cu++Ce4+) was proposed here and the interaction between copper and cerium resulted in the formation of Cu+ species on the surface of the CNTs. The synergistic effect between surface oxygen vacancies and Cu+ species over the CNT supported catalysts plays an important role in the reduction of NO by CO under oxygen condition and the activity is mainly related to the electronegativity of elements, the reduction and adsorption behaviors of these catalysts. This work can provide some insights into the catalytic reactions among NO and CO under oxygen condition.
Sarisak Soontornchai
Sukhothai Thammathirat Open University,Thailand
Title: Survey on chemical use situation among household community products on cosmetics and hazardous substances in Nonthaburi Province, Thailand
Time : 17:30-17:50
Biography:
Sarisak Soontornchai has completed his DSc (Nutritional Toxicology) from Mahidol University and training from Max von Pettenkofer, Berlin, Germany, and Institute of Chemical and Biochemical Sensor, Muenster, Germany. He is Associate Professor of Public Health in School of Health Science, Sukhothai Thammathirat Open University, Thailand. He has published about 30 papers and has been serving as Editor-in-Chief of STOU Journal. Additionally, he is as an Editorial Board Member of ASEAN Journal of Open and Distance Learning (AJODL) and Thai Journal of Toxicology.
Abstract:
Since chemical safety among household community products are still concerned, therefore, the objectives of this applied research were to survey chemical use situation in household community products on cosmetics and hazardous substances in Nonthaburi Province, Thailand. This qualitative research was conducted in samples of 18 household community product entrepreneurs obtaining product quality according to community product standard in Nonthaburi Province by in-depth interview. The research instrument with content validity by 3 experts was interviewing form on chemical use situation of household community products. Data were analyzed by content analysis. The findings of this research revealed that most of the entrepreneurs were single enterprise with investment cost of 50,000 – 100,000 baht. They formulate their household community products by production process from training. Their chemicals used were selected by consulting experts. They generated their products in their own residents with separated areas, kept their chemicals in those areas as well, and worked guided by attached chemical sheets. They used personal protective equipment and disposed production waste through public drainage pipe. They had no chemical information and hazard communication in their production area. The chemicals mainly used were detergent, surfactants, acids, and bases as well as herbs. They all realized aquatic environment pictogram and correct practices in terms of separated production and cooking containers, chemical contact with gloves, concern with chemical contact to their eyes, immediate cleaning of chemical spill, no smoking while working, and hand washing after chemical handling and before eating.
Alireza Noorpoor
University of Tehran, Iran
Title: CFD modeling of cattle manure anaerobic digestion for evaluating agitation via mixer
Time : 17:50-18:10
Biography:
Alireza Noorpoor has completed his BSc in Mechanical Engineering at University of Mazandaran, Iran. He completed his MSc and PhD in Mechanical Engineering at Iran University of Science and Technology (IUST), Tehran, Iran in 2000 and 2006 respectively. Now he is an Associate Professor in Graduate Faculty of Environment at University of Tehran (UT). His field of research is air pollution control, energy systems and CFD. Now, he is the Head of Air Pollution Control Technologies Research Group (APTEC) in UT. Also, he has established a knowledge based company, FANPAYA CO. that works in environmental and renewable energy.
Abstract:
Discharging cattle manure as the waste of the livestock activities to the environment has resulted in biological and chemical contamination and methane emission that has concluded major large-scale impacts, such as global warming. Thus, anaerobic digesters are utilized to eliminate harmful micro-organisms, which occur in the cattle manure, in a chemical and organic process in absence of oxygen. For improving the efficiency of anaerobic digester, it is necessary to mix all the feedstock within the tank of the digester, properly. In this study, the aim is to model the agitation of the material within an anaerobic digestion tank with a mixer established for stirring cattle manure in a livestock yard; and also to analyze stagnant volume formation and velocity gradient. The CFD model is steady-state and rheological properties of the feedstock are considered. RNG turbulence model is employed and simple algorithm is used to achieve velocity and pressure field. The results are validated comparing the power consumption of the mixer with the CFD results. Therefore, it is concluded that the employed procedure is suitable to predict the behavior of the cattle manure feedstock in the digester.
Recent Publications
- A R Noorpoor and S Nazari kudahi (2015) CO2 emissions from Iran’s power sector and analysis the influencing factors with STIRPAT model. Carbon Management 6(3):1-16.
- A R Noorpoor and S Nazari kudahi (2016) Analysis and study of CO2 adsorption on UiO-66/graphene oxide composite using equilibrium modeling and ideal adsorption solution theory (IAST). Journal of Environmental Chemical Engineering 4:1081-1091.
- A R Noorpoor, Parisa Heidarnejad, Nasim Hashemian and Danial Hamedi (2017) Exergy based optimization of a biomass and solar fuelled CCHP hybrid seawater desalination plant. Journal of Thermal Engineering 3(1):029-1033.
- Sahar Asgari, A R Noorpoor and Fateme Ahmadi Boyaghchi (2017) Parametric assessment and multi-objective optimization of an internal auto-cascade refrigeration cycle based on advanced exergy and exergoeconomic concepts. Journal of Energy 125:576-590.
- Saeed Nazari Kudahi, Ali Reza Noorpoor and Niyaz Mohammad Mahmoodi (2017) Determination and analysis of CO2 capture kinetics and mechanisms on the novel graphene-based adsorbents. Journal of CO2 Utilization 21:17-29.
- Green Technology & Energy Science | Green Enigineering | Biomass & Biofuels | Sustainable Development | Applications of Environmental Chemistry | Environmental Geology | Renewable Energy Sources and Storages | Pollution Control Chemistry and Green Chemistry | Environmental Hazards | Environmental Biotechnology
Location: Sylt 3
Session Introduction
José Vilca
Private University of Tacna, Peru
Title: Geochemical tools help overcoming obstacles to discover 50 TCF gas in Peru – now we have big petrochemical industries
Time : 10:30-10:50
Biography:
Jose Cipriano Vilca Valdivia has completed his Doctorate at the Autonomous University of Madrid, Spain and his Postdoctoral studies at the BGR, Hannover, Germany.
Abstract:
Bum Gun Kwon
Chosun College of Science and Technology, South Korea
Title: Transport of Styrene Oligomers (SOs) derived from polystyrene plastic into ocean by precipitation in Tokyo Bay
Time : 10:50-11:10
Biography:
Bum Gun Kwon has completed his PhD from Gwangju Institute of Science and Technology (GIST) and Postdoctoral studies from Seoul National University. He is the Assistant Professor of Chosun College of Science and Technology. He has published more than 30 papers in reputed journals and has been serving as a reviewer of repute.
Abstract:
Plastic pollution is considered one of today’s main environmental problem and pollutants in natural environments. Polystyrene (PS), one of the representative plastics, is an environmental concern. However, an assessment of the transport of styrene oligomers (SOs) from land to ocean has yet to be performed. Here, we show that anthropogenic SOs, an indicator of PS contamination in the environment, can migrate from land to sea by runoff and weather events such as rain and typhoon. All samples of sand and seawater taken from the coastline of the Tokyo Bay were found to contain SOs such as styrene monomer (SM), styrene dimers (SD), and styrene trimer (ST), in which these concentration distribution was in the order of ST>SD>SM. In particular, the pollution of SOs along the Tokyo Bay was relatively severer than those in other regions. The Tokyo Bay seems be considered as transporting high SOs through weather events, i.e., rain and runoff, which can reflect a heavily populated area and various land-based SOs sources connected with estuary. These findings are of interest from both the extent of PS plastic pollution and the transportation of SOs. Our results suggest that SOs pollutants are originating from the land-based sources to be present in the ocean, and along coasts from the land.
Juliana Rodrigues Gadelha
Universidade do Porto, Portugal
Title: Temperature tolerance test exposition with temperate sea anemone Actinia equina, a climatic and environmental changes simulation
Time : 11:45-12:05
Biography:
Juliana Rodrigues Gadelha has completed her PhD on Marine Biology/Ecotoxicology in 2015, from Universidade de Aveiro. Currently, she is a Doctoral research integrate at CIIMAR (Interdisciplinary Center of Marine and Environmental Research), working in an emblematic Project funded by Horizon 2020, called INSEAFOOD: Innovation and valorization of seafood products: meeting local challenges and opportunities. She has published 13 papers in reputed journals and participated on 13 projects, national and international, more than 40 conferences communications and published one book in 2007. On the last decade, she works on environmental risk assessment and applications of biological concepts to biotechnology and environmental safety.
Abstract:
Atlantic and Mediterranean warming-related diseases outbreaks and species shifts recently have been documented. Evaluated tools of short-term effects on the health or organisms resistance are necessary to assess and understand mechanisms affecting marine biodiversity. Until now, climate warming has been studied at the population or community level. Here we offer a better understanding of such phenomena at the individual organism level, using anatomic-morphological approaches to interpret effects of natural physical stressors, according to behavioral patterns. The goal of this work was to evaluate the sea anemones behavior with temperature variance. This study takes a method of behavioral observations (morphological and anatomic parameters, with physiological implications) to identify changes in behavior, after exposure to the physical stressors temperature (10, 15, 20, 25 and 30) on temperate sea anemone Actinia equina over 96 h of exposure. Other endpoints as condition index and reproduction also assessed. Behavioral patterns analysis placed the differentially ecological functions in a wide range of categories including tentacle flexion, tentacle retraction, column cavitation, peristome depression and oral disc flexion. These parameters suggest that the early stress response (before result on individual death) to elevated temperature involves essentially all aspects of same chemical reactions. In this case we observed receptors functioning and the frequency of open-close oral sea anemones, tentacles and columns anatomic alterations to detect earlier the effects of physical stress induction. The superiority of results tested was that the key species reacted to different temperature ranges in order to demonstrate that species from different climatic zones could have the same behavioral pattern but have intrinsic adaptations on each climatic zone. Also some collections of parameters such as: water nutrients availability, reproductions rate (number of polyps), survival (condition index) and temperature variations were significant on behavioral answers.
Maria Luisa Baiño-Salingay
IHE-Delft Institute for Water Education, Netherlands
Title: Banned and restricted organic pesticides still used in farms in Northern Mindanao, Philippines
Time : 12:05-12:25
Biography:
Maria Luisa Baiño-Salingay is a Filipino PhD Research Fellow of IHE Delft, Institute for Water Education and Technical University of Delft (TU Delft) in Delft, The Netherlands. Her PhD studies are funded by Netherlands Fellowship Programme (NFP) and Schlumberger Foundation Faculty for the Future. She is an Associate Professor II in Chemistry in University of Science and Technology of Southern Philippines. She obtained BS Chemistry degree in Xavier University, Ateneo de Cagayan as University Academic Scholar and Pilipinas KAO (Kao Global Chemicals, Japan). She is Registered/licensed Chemist and a trained Chemical Safety and Security Officer of the US Department of State. She earned her MS Physical Sciences major in Chemistry, minor in Physics at USTP. She also earned MSc Water Management, specialize in Water Quality at UNESCO-IHE, The Netherlands, funded academically by NFP and research by PRoACC2.
Abstract:
Rafat M. Mohareb
Cairo University, Egypt
Title: Uses of cyclohexanediones for the synthesis of nitrogen and/or sulfur heterocyclic compounds together with their cytotoxic evaluations
Time : 12:25-12:45
Biography:
Rafat M Mohareb is a Professor of Organic Chemistry at the Department of Chemistry, Faculty of Science, Giza, Egypt since 1994 till now. He got his PhD in Organic Chemistry on 1984, Cairo. He has worked as Visiting Professor at UC Berkeley University State of California USA from 1999-2002 and Visiting Professor at Kuwait University 1995-1996. He was a Humboldt fellow in Germany in 1988, 1989, 1993, 1995, 1998, 2003, 2006 and 2009-2012, 2013-2016. He received the price of encouragement of research work from Egypt 1995. He published more than 170 scientific publications in international journals. He has supervised more than 30 PhD and 60 MSc Theses.
Abstract:
In organic chemistry, due to their many applications, derivatives of thiophene stand out among biomolecules used in trials to determine biological activity. They are present in natural products and are frequently incorporated into agrochemicals, dyes, and drugs in general. Various thiophene derivatives are produced by molecular modifications through varied synthesis routes that result in increases in specificity and thus safety profiles. Within the thiophenic family, the 2-amino-thiophenes have been well reported. In new drugs investigations they occupy a special position due to innovations in their synthesis (Gewald reaction), availability, stability, and structural simplicity that allow them to be important scaffolds in chemical and therapeutic products; like the top selling drugs olanzapine and tinoridine. In addition, they present a large spectrum of biological properties that include antimicrobial, anti-inflammatory antioxidant and antiplatelet activities. In the present work we demonstrated the uses of cyclohexane-1,3-dione and cyclohexane-1,4-dione for the synthesis of thiophene, pyrazole and pyran derivatives.
Vinod Kumar
Maharshi Dayanand University, India
Title: Role of thermodynamic properties of ionic liquids in industries to reduce pollution
Time : 12:45-13:05
Biography:
Vinod Kumar did his MSc from MD University, Rohtak (India) in the year 1979 with specialization in Physical Chemistry. He did his PhD from the same university in the year 1983. He joined the Department of Chemistry, MD University, Rohtak as Senior Lecturer in 1989 from where he elevated to the post of Professor in 2005. At present he is Dean of Physical Sciences. He has published 140 research papers in journals of international repute. Vinod Kumar has expertise in thermodynamics of liquid mixtures and has developed graph theory to determine thermodynamic properties of liquid mixtures (components being organic solvents, ionic liquids, surfactants, diesel, and bio-fuels). He has attended about 40 national/international conferences and supervised 18 PhD students.
Abstract:
Statement of the Problem:
In the era of rapidly changing global environment, research attempts have been made to replace fossil fuels for the control of greenhouse gases emissions and environmental pollution. Ionic liquids (ILs) have received widespread attention as an eco-friendly reaction medium for various processes involved in industries. Due to their unique properties (negligible vapor pressure, non-flammability, excellent solubility, non-volatility, reusability, high thermal and electrochemical stability), ILs can be considered as safer and more sustainable alternative to volatile organic compounds (VOCs) used in industries. Experimental density, speeds of sound and their derived properties, excess molar volumes, VE data of ILs and their mixtures with organic solvents may be of great importance in mass and heat transfer processes of working fluids and thus can be utilized for designing and engineering of such processes.
Methodology and theoretical orientation:
The densities, ρijk and speeds of sound, uijk data of ternary {1-butyl-3-methylimidazolium tetrafluoroborate (i) + 1-ethyl-3-methylimidazolium tetrafluoroborate (j) + cyclopentanone or cyclohexanone (k) mixtures have been measured at 293.15 K and 298.15 K using a digital densimeter and speed of sound analyser. The observed ρijk and uijk data have been employed to determine (VE )ijk and respectively. The (VE )ijk and data have been fitted to Redlich-Kister equation to see whether the observed data is of required accuracy to be utilized in various industrial processes or not ? The topology of the constituent molecules has been utilized (Graph theory) to obtain information about the state of the components in pure state and also regarding the various processes involved in the mixture formation.
Conclusion and significance:
The (VE )ijk and data predicted by Graph theory compare well with their experimental data. Further the measured data are of required accuracy and can be utilized for designing various processes involving fluid in industries.
Recent Publications
Gupta H, Malik S and Sharma V K (2017) Excess molar volumes and excess isentropic compressibilities of ternary mixtures containing ionic liquids and cyclic alkanone. J. Chem. Thermodyn. DOI: 10.1016/j.jct.2017.04.013
Sharma V K and Kataria J (2015) Thermodynamic properties of ternary mixtures containing 1-ethyl-3- methylimidazolium tetrafluoroborate with cyclic amides and cyclopentanone or cyclohexanone at T = (293.15, 298.15, 303.15 and 308.15) K. J. Chem. Thermodyn. DOI: 10.1016/j.jct.2015.02.018.
Yin Y, Fu T, Zhu C and Ma Y J (2017) Volumetric and viscometric study and FT-IR analysis of binary and ternary mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate, methyldiethanolamine and water. J. Mol. Liqs. DOI: 10.1016/j.molliq.2017.08.088.
Anwar N Riyazuddeen (2017) Effect of composition and temperature variations on thermophysical properties of binary and ternary mixtures of 1-ethyl-3-methylimidazolium ethylsulfate with 1-butanol and/or methanol. Fluid Phase Equilib. DOI: 10.1016/j.fluid.2017.01.019.
Rafiee H R (2015) Volumetric properties for binary and ternary mixtures of allyl alcohol, 1,3-dichloro-2- propanol and 1-ethyl-3-methyl imidazolium ethyl sulfate [Emim][EtSO4] from T = 298.15 to 318.15 K at ambient pressure. Thermochim Acta. DOI: 10.1016/j.tca.2015.04.027.
Ahmed Younis
National Research Centre, Egypt
Title: Microwave assisted synthesis of novel dihydropyrazolo[1,5-a]pyrimidine, [1,2,4] triazolo[1,5-a]pyrimidine and 3,4-dihydrobenzo[4,5]imidazo[1,2-a]pyrimidine derivatives incorporating Schiff base moiety as potential anticancer agents
Time : 15:30-15:50
Biography:
Ahmed Younis has completed his PhD from Alazhar University. He has supervised PhD thesis and has published more than 6 papers in reputed journals and has been contributed in more than one project in green chemistry field.
Abstract:
The present work was devoted to be used as an efficient green technique for synthesis of novel, dihydropyrazolo[1,5-a]pyrimidine (3, 5), [1,2,4]triazolo[1,5-a]pyrimidine (7) and 3,4-dihydrobenzo[4,5]imidazo[1,2-a]pyrimidine (9) derivatives incorporating Schiff base moiety. The reactions of chalcone 1 with different heterocyclic amines were achieved under solvent-less conditions using microwave irradiation and/or under classical reflux condition. In general, microwave irradiation offered the advantages of high yields, short reaction times, and simplicity compared to the conventional methods. The structures of all the compounds were confirmed by analytical and spectral data. Some of the synthesized compounds were evaluated against HepG-2 and showed significant antitumor activities.
Recent Publications
- Ahmed Younis, Usama Fathy, A Atef El-Kateb and Hanem M Awad (2016) Ultrasonic assisted synthesis of novel anticancer chalcones using water as green solvent. Der Pharma Chemica 8(17):129-136.
- Ahmed Younis, Ali M Hassan, Mohamed F Mady, El-Haddad A F, Yassin F A and Mahmoud Fayad (2017) Microwave-assisted one-pot synthesis of novel polyarylpyrrole derivatives of expected anticancer activity. Der Pharma Chemica 9(3):33-44.
- Dimmock J R, Elias D W, Beazely M A, Kandepu N M (1999) Bioactivities of chalcones. Curr. Med. Chem. 6:1125-1149.
El-Shahat H A Nashy
National Research Centre, Egypt
Title: An advanced oxidation process based on Fenton reactions for reduction of environmental impact of leather tanning effluents as an efficient method for wastewater treatment
Time : 16:25-16:45
Biography:
El-Shahat H A Nashy is a Professor in the Chemical Industries Research Division, Department of Chemistry of Tanning Materials and Leather Technology. His general specialization is in natural sciences and he is specialized in chemical sciences. He has experience in the wastewater treatment and its evaluation according to environment required limits. Also, his other works are in interest of chemistry of tanning materials and leather applications.
Abstract:
In the last few decades, humankind is facing water pollution and its scarcity. In this regards, great attention is being given to the removal of organic pollutants from wastewater by advanced oxidation processes (AOPs) that are based on generation of highly reactive species, especially hydroxyl radicals. Fenton processes are attractive alternatives in effluent treatment, especially when applied to recalcitrant compounds. Leather tannery wastewater treatment represents a difficult technological problem. Unfortunately, it is one of the most serious industries which generates large amounts of hazardous wastes and is a source of severe environmental impacts as well as health risks. In particular, the dehairing stage generates an alkaline wastewater (high pH) with high concentrations of organic matter, sulphides, suspended solids, and salts, which shows significant toxicity. Also, chrome has well known adverse effects because it is highly toxic, highly persistent in the environment and not biodegradable. Conventional treatment methods of this effluent are inefficient to meet the required limits. The objective of this work was to evaluate the efficiency Fenton's reaction as an advanced oxidation for the treatment of lime/de-hair and chrome effluents, investigating the reduction of COD, ammoniac nitrogen and chromium concentrations as well as toxicity in treated wastewaters. The different operational conditions as variable doses of hydrogen peroxide (H2O2) and iron sulfate (Fe2+), pH, time and different mass ratios of Fe2+/H2O2 were investigated to determine the optimum operating conditions for the elimination of chrome, chemical oxygen demand (COD), biological oxygen demand (BOD), sulfide, total kjeldahl nitrogen (TKN), total suspended solids (TSS) and oil & grease. The experimental results show that COD, sulphide and oil-grease was removed effectively and the treated effluent has a good quality. Residual concentrations of COD, BOD, TSS and chrome were 974, 533, 19 and 485 mg/l, respectively. The sulfides concentration was highly reduced from 3695 to 1.4 mg/l. The overall COD, sulphide, oil-grease and chrome removal efficiencies reached 82%, 90%, 96% and 95% respectively. The treated effluent could meet the national regulatory standard for discharge into the sewerage systems with respect to the studied parameters.
Recent Publications
1. M A El-Khateeb, El-Shahat H A Nashy, N A Abdel Ghany and Ahmed M Awad (2017) Environmental impact elimination of chrome tanning effluent using electrocoagulation process assisted by chemical oxidation. Desalination and Water Treatment 65:147–152.
2. El-Shahat H A Nashy and M A El-Khateeb (2015) Agro-substances and non-agro-substances as efficient and cost-effective materials for wastewater treatment. Desalination and Water Treatment.
3. Morera J M, Bacardit A, Ollé L, Bartolí E and Borràs M D (2007) Minimization of the environmental impact of chrome tanning: a new process with high chrome exhaustion. Chemosphere 69(11):1728-33.
4. Swarna V K, Venba R, Madhan B, Chandrababu N K and Sadulla S (2009) Cleaner tanning practices for tannery pollution abatement: Role of enzymes in eco-friendly vegetable tanning. J. Cleaner Production 17(5):507-515.
5. Regina C C Costa, Flàva C C Moura, Patricia E F Oliveira, Fabiano Magalhães and Jose D Ardisson (2010) Controlled reduction of red mud waste to produce active systems for environmental applications: heterogeneous Fenton reaction and reduction of Cr(VI). Chemosphere 78:1116-1120.
Theophilus Clavell Davies
University of Nigeria, Nigeria
Title: Urban geochemistry of African megacities
Time : 16:45-17:05
Biography:
Theophilus Clavell Davies is a Chartered Geologist who currently holds the position of Visiting Professor of Medical Geology at the University of Nigeria at Nsukka. His teaching and research activities encompass three main themes: combating environmental health impacts of mining in Africa; isolating and obviating the effects of climate change on human health in African megacities, and improvement of ethical standards in African geoscience practice. His work includes field and laboratory studies, and has led to a wide range of publications (over 200), including editorship of five special issues of high impact journals. Before joining the Department at Nsukka, he was a Research Professor at the Faculty of Natural Sciences of the Mangosuthu University of Technology in South Africa. He is the recipient of several distinguished fellowships and research awards, including the prestigious Alexander von Humboldt Foundation Fellowship of Germany and the 2014 NMGS Shell Petroleum Award. He holds (or has held) executive positions in a number of international geoscientific steering committees such as: Member of the Governing Council and Board of Trustees of the Geological Society of London (1996-2000); Member of the Scientific Board of the UNESCO International Centre for Global-Scale Geochemistry (2016-2021), Regional Councillor for Africa of the Association of Applied Geochemists (2006-Present) and Councillor for Geoscience of the International Medical Geology Association (2011-2015).
Abstract:
Following the dawn of the environmental epoch in Africa almost four decades ago, a plethora of studies have been conducted in the continent’s major urban centers to determine the effect of multiple sources of contamination and pollution of the air, water and soil environment, and how these are accentuated by climate change. Toxic metal contamination, organic pollution, smog, acid mine drainage (AMD), acid rain, greenhouse gas accumulation and release of teratogens (e.g. ionizing radiation) are the most widespread legacies of an often uncontrolled growth that has deeply changed the geochemical character of these urban environments. For the megacities of Cairo, Lagos and Kinshasa, we have assembled a mass of data on the migration pathways, uptake dynamics and health impacts on humans of geochemical emitted through mining and ore processing, burning of fossil fuels, industrial and manufacturing activities, human and industrial waste disposal practices, and vehicular traffic emissions. In this presentation, we examine the effect of climate change on these processes and activities. Finally, we illustrate the role of urban geochemistry in mitigating the damages, by systematizing and analysing the assembled data (such as the nature of soils, stratigraphy, groundwater flow and patterns of atmospheric circulation) for use in designing appropriate measures for clean-up and monitoring of the polluted areas.
Alireza Noorpoor
University of Tehran, Iran
Title: Development of an experimental model for assessing CO2 working capacity of the combined cycle power plant on mesoporous graphene oxide-TiO2 nanocomposite
Time : 17:05-17:25
Biography:
Alireza Noorpoor has completed his BSc in Mechanical Engineering at University of Mazandaran, Iran. He completed his MSc and PhD in Mechanical Engineering at Iran University of Science and Technology (IUST), Tehran, Iran in 2000 and 2006 respectively. Now he is an Associate Professor in Graduate Faculty of Environment at University of Tehran (UT). His field of research is air pollution control, energy systems and CFD. Now, he is the Head of Air Pollution Control Technologies Research Group (APTEC) in UT. Also, he has established a knowledge based company, FANPAYA CO., that works in environmental and renewable energy.
Abstract:
Recently a group of solid adsorbent known as the graphene-based adsorbents has been developed by the scholars to reduce the adsorbent cost and enhance CO2 capture. As a result of the unique combination of graphene's chemical, mechanical, structural and thermal properties, these adsorbents have some advantages in comparison with other adsorbents. Determination of pure CO2 capacity on graphene-based adsorbents has been the main target of the researches. Therefore, there is a literature gap to estimate CO2 adsorption capacity on these adsorbents in the binary or multi gas system which has different CO2 partial pressures similar to CO2 concentration in the flue gas of thermal power plants especially combined cycle power plants. In this study, an experimental model for calculation CO2 working capacity on mesoporous graphene oxide-TiO2 nanocomposite has been developed by response surface methodology based on the results of the breakthrough experiments (Figure 1 and 2) with respect to CO2 concentration in the flue gas of combined cycle power plants (including, 3.109, 4.352 and 5.102% vol) and different temperatures (including, 25, 60, 95oC) and various flow rates of feed gas (including, 20, 40 and 60 ml/min). CO2 working capacity as the function of the above parameters has been illustrated as follows: CO2 capacity=0.27644+ 0.06429 C-0.08541 T 0.02464 C2+0.02378 F2-0.01966 C×T-0.04669 T×F. Increase of CO2 concentration and the gas flow rate have the positive implication on CO2 working capacity. On the other hand, the gas temperature has the negative effect on CO2 adsorption as a result of exothermic behavior of CO2 capture. Furthermore, this parameter has the most negative effect on the experimental model of CO2 working capacity. The interaction of the parameters including C×T and T×F has the negative implication on CO2 working capacity.
Figure 1: Experimental set-up for assessing CO2 working capacity.
Figure 2: Breakthrough experiments for assessing CO2 working capacity.