Day 2 :
The University of Manchester, UK
Time : 09:35-10:05
Gyorgy Szekely received his MSc Degree in Chemical Engineering from the Technical University of Budapest, Hungary and he earned his PhD Degree in Chemistry under the European Commission’s Marie Curie Actions from the Technical University of Dortmund, Germany. He worked as an Early Stage Researcher in Hovione Pharma Science and an IAESTE Fellow at the University of Tokyo, Japan. He was a Research Associate working with Andrew Livingston on molecular level separations in Imperial College London, UK. He is currently a Lecturer in Chemical Engineering at The University of Manchester, UK since 2014. He is an Adjunct Faculty at Saveetha University and recipient of the Distinguished Visiting Fellowship of the Royal Academy of Engineering. His multidisciplinary professional background covers, Supramolecular Chemistry, Molecular Recognition, Molecular Imprinting, Process Development, Waste Utilization, Nanofiltration and Pharmaceutical Impurity Scavenging. He serves as an Academic Editor for the journal Advanced Materials Letters, the Secretary General for the Marie Curie Fellows Association, and a Member of the Royal Society of Chemistry. His research interests and activities can be followed through his personal website at szekelygroup.com.
Sustainable manufacturing is one of the grand challenges of the 21st century. It has recently been realized that conventional downstream separation processes are unsustainable because they account for as much as 80% of the total manufacturing costs, and eventually contribute to 50% of the industrial energy usage. With profit margins growing thin, there is an imperative drive for minimizing both the cost and environmental impact via process intensification (PI). PI through minimizing solvent and raw material consumption, as well as utilizing waste, can make a significant difference towards environmentally benign and economically viable chemical production. As an effective PI tool, nanofiltration is getting recognized as an emerging technology which provides green process engineering. The seminar covers the development of sustainable separation processes using solventresistant nanofiltration membranes. Examples and case studies for solvent recovery and recycling, yield enhancement, purity improvement and valorization of waste are discussed. Investigation into the polymer memory effect for nanofiltration membranes as well as its exploitation will be explained. The potential of imprinted membranes for unique separations such as three-way fractionation of solutes will be discussed. Synergistic coupling of nanofiltration and imprinting technologies for hybrid processes will also be presented. Examples will demonstrate that separation processes based on nanofiltration and molecular imprinting can reduce carbon footprint by 90% and process mass intensity by 99%. Surface modification of polybenzimidazole membranes for catalytic membrane reactors and improved stability will be discussed.
Qatar University, Qatar
Time : 10:05-10:35
Syed Mohammed Javaid Zaidi is Chair Professor of Chemical Engineering and QAFAC Chair in the Center for Advanced Materials, Qatar University. He has more than 20 years of research experience in the area of clean water and clean energy. He has extensive experience in the desalination research and has supervised more than 20 graduate students in clean water and clean energy. He has published more than 200 papers in international journals/book chapter, conference proceedings/presentations and has 14 US patents. He has conducted joint projects in RO desalination in collaboration with the Massachusetts Institute of Technology (MIT), USA for the development of nano-structured membranes for RO water desalination.
Qatar has been experiencing rapid infrastructure development and population growth, which led to the exponential growth in water demand and desalinated water production. Although major desalination processes in Qatar are based on thermal technology, now the trend is shifting to the membrane based reverse osmosis (RO) processes due to environmental factors and energy efficiency. Two major RO desalination projects are underway in Qatar. The Ras Abu Fontas project built at a cost of QR1.75 billion will have a capacity to provide 36 MIGD (164,000 m3/day) of desalinated water daily to meet the needs of about 1 million people in the country. Umm Al Houl will produce 284,000 m3/day per and will reach 614,000 m3/day after the start-up of the new facility. This is the first time that reverse osmosis technology has been used on a large-scale production plant in Qatar. Previous implementation of RO in Qatar has been limited and on small scale, such as the trial in Dukhan, where 750 m3/day of high salinity water was treated for boiler feedwater. The highlights of the RO desalination plants in Qatar are coagulation, dissolve air floatation, sedimentation, UF, granular media filtration, multi-stage RO units (pass, trains etc.) and high pressure multistage centrifugal pumps with energy recovery device (ERD). Qatari waters are very complex with highest salinity in the Gulf Cooperation Council (GCC) region and high level of colloids and organic matter. A systematic interpretation of critical combinations of feed water, pretreatment and membranes and adequate conclusions can avoid setbacks of reverse osmosis processes. This presentation focusses on the RO challenges in Qatar such as turbidity issues, membrane fouling and pretreatment and can be resolved through proper operation and maintenance of the RO plants.
Tianjin University, China
Time : 10:55-11:25
Michael D Guiver obtained his BSc (London University) and MSc (Carleton University) in Chemistry, and his PhD in Polymer Chemistry from Carleton University in 1988. He has been an Editor for the Journal of Membrane Science since 2009. He served on the Editorial Advisory Board for Macromolecules and ACS Macro Letters, from 2013–2015. He is a Fellow of the Royal Society of Chemistry, and is a Member of the International Advisory Board of the Barrer Centre, Imperial College, UK. He has published over 225 SCI articles and book chapters and holds about 25 patents and patent applications. From 1987–2014, he was a Scientist at the National Research Council Canada. In September 2014, he was appointed as a National 1000-Plan Foreign Experts Professor at the State Key Laboratory of Engines, Tianjin University. His research is in polymer electrolyte membranes for fuel cell applications and in microporous and other polymer membranes for gas separations.
Intensive research effort has been focused on developing highly CO2-permeable membranes from polymers of intrinsic microporosity and other polymer-hybrid systems. Practical membranes rely on coating thin layers of these polymers on mechanically-robust supports. Deposition of 2D materials with tailored channels composed of CO2-selective interlayers onto commercial polysulfone membranes provide a practical solution to fabricating membranes with high CO2-permeance and CO2/ gas selectivity. The interlayer spacing between horizontally-aligned GO nanosheets can be accurately tailored using different methods. First, by covalently bonded borate groups by thermal crosslinking at different temperatures; higher temperatures led to more crosslinking, thus controlling and narrowing the interspace distance. Borate in the inter-channel space allows reversible reactions with CO2, facilitating their transport. Furthermore, humidified feed gases interacting with the modified GO ensure sufficient water retention within the membrane channels. One B-GO membrane had a CO2 permeance of 650 GPU and CO2/ CH4 selectivity of 75, which is among the best performance reported for GO-based composite membranes using humidified feed gases. Using a different approach, gas separation membranes containing CO2-philic and non-CO2-philic nanodomains in the interlayer channels of graphene oxide (GO), were prepared by intercalating PEGDA. PEGDA reacts with epoxy groups on the GO surface, constructing CO2-philic nanodomains with high sorption capacity, whereas unreacted GO surfaces give non-CO2-philic nanodomains having low-friction diffusion. A GO-PEGDA500 membrane (PEGDA MW 500 daltons) had a CO2 permeance of 186 GPU and a CO2/CH4 selectivity of 67, which is amongst the highest performance reported for dry-state GO-stacking membranes. Apart from horizontally-aligned GO-layered membranes, we have also prepared vertically aligned channels using montmorillonite, which have high CO2 permeance and CO2/gas selectivity for both dry and humidified gas feeds.
Hatem Asal Gzar, Wasit University, Iraq
Keynote: Nanomembrane process for treatment and reuse dyes effluent from Al-Kut textile factory: Recent progress in fouling control
Time : 11:25-11:55
Hatem Asal Gzar received his Ph.D in Environmental Engineering from University of Baghdad 2010, Iraq. He works as lecturer in Environmental Engineering Department for higher studies at University of Baghdad from January 1999 to October 2013. Hatem was a member in foundation the undergraduate program in Environmental Engineering Department in 2005 at University of Baghdad. From October 2013 till present he work in Wasit University, Iraq. He works as assistant Professor in Civil Engineering Department, at the same department he was a member in foundation and staff of Water Resources Engineering Branch for higher studies, he was lecturer for two subjects, the first is groundwater and seepage, and the second is advanced wastewater treatment. Hatem was supervisor for many thesis and dissertations. He also was a member in many examination committees of higher studies inside and outside of Iraq. Hatem has large expertise in evaluation many research papers for many International and local scientific Journals and conferences. He works for about 15 years as a member in Environmental consultancy Bureau, Baghdad University, many researches and studies were achieved for many organizations and ministries in Iraq.
Textile industry consumes huge quantities of water and chemicals for its variable wet processing operations. During the dyeing process about 30% of colorants still unfixed on fibers and these dyes are responsible for contamination of wastewater. The main objective of this study is to investigate the possibility of using nanomembrane technology (Figure 1) in the treatment of wastewater from dyes of Al-Kut Textile Factory, Iraq, in order to recover water and salts again for the benefit of them. Ultrafiltration (UF) is used as a pre-treatment for the nanofiltration (NF). This study investigates the removal of three types of dyes with highest usage rates which are: reactive, disperse, and acidic dyes in two colors blue and red for each type. The NF process operate under operating parameters of 10-15 bar pressure and 20oC temperature. The most important parameters that determine the reuse of water in Al-Kut Textile Factory include color, COD, TOC, turbidity, and conductivity. The decline in flux can be estimated by finding the difference between the pure water flux and solution flux divided by pure water flux. These parameters measure at different experimental conditions to provide information about membrane fouling. A correlation between flux decline due to a given solute and the pore size of the membranes can be found. The change of rate of flux with time is a quantitative indicator of the fouling process. The modified fouling index (MFI) which represents the relative fouling potential of different molecules can be quantitatively estimated. A correlation between physicochemical properties of the molecules and their fouling potential may be found by using the experimentally determined MFI values. The NF membrane is capable of rejecting pigments in wastewater and other organic matter, which is sodium chloride and monovalent salts. Due to the precision of this type, the treated water can be re-used again from the dye bath.