Download or read book Development of Polymers for Electroplating Waste Water Purification Polymer Supported Reagents for Organic Synthesis and Heterogeneous Catalysts for Aerobic Alcohol Oxidation Reactions written by Die Daisy Yang and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of Polymers for Electroplating Waste Water Purification, Polymer-supported Reagents for Organic Synthesis and Heterogeneous Catalysts for Aerobic Alcohol Oxidation Reactions" by Die, Daisy, Yang, 楊蝶, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3984888 Subjects: Thiourea Polymers Supported reagents Catalysts Sewage - Purification - Heavy metals removal

Download or read book Development of Polymers for Electroplating Waste Water Purification Polymer supported Reagents for Organic Synthesis and Heterogeneous Catalysts for Aerobic Alcohol Oxidation Reactions written by Die Yang (Daisy) and published by . This book was released on 2008 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Supported Reagents and Catalysts written by and published by . This book was released on 2005 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development and Applications of Polymer supported Reagents and Ion Exchange Resins in Organic Synthesis and Combinatorial Chemistry written by Stephen J. Shuttleworth and published by . This book was released on 2002 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Polymer bound and Homogeneous Reagents and Catalysts for Organic Synthesis written by Myun-Jung Jin and published by . This book was released on 1990 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Development and Investigation of Conducting Polymer Based Heterojunctions as Photostimulated Electrocatalysts written by Matthew Peter Gustafson and published by . This book was released on 2014 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for a clean, sustainable energy future has motivated the scientific community to research alternative sources of power. Energy is vital to the growth and quality of our civilization and is the origin of the nexus of major issues facing the world today. Issues such as clean water, adequate food, spread of disease, armed conflict and an increasing global population could be resolved if energy was cheap, abundant and available. The use of energy carriers such as petroleum and diesel consume a finite fuel resource while polluting the environment. Among the alternative fuels that have been proposed, hydrogen is a prominent energy carrier recognised for being clean and sustainable. Currently, the majority of the world's hydrogen supply is provided via the steam reforming of methane. This process, like petroleum and diesel, remains limited by a finite resource while impacting on the environment. Unlocking hydrogen from water via electrolysis is seen by many as the preferred, environmentally sustainable alternative. Unfortunately, water electrolysis is an energy intensive process and remains difficult and expensive. The half-reactions that amount to the overall water electrolysis reaction are the proton reduction and water oxidation reactions. Water oxidation is identified as the main consumer of excess energy (overpotential) required for the overall reaction, due to its four-electron, stepwise process. One approach to overcome the energy required is the use of sunlight to assist or drive electrochemical water-splitting. By developing a photostimulated electrode, the sun can reduce the energy required to split water for hydrogen production. Current photostimulated electrodes or photoanodes involve the use of semiconducting inorganic compounds such as metal oxides. While these inorganic photoanodes are advancing, some require rare and expensive compounds that can impact on the environment. This work developed an organic photoelectrode based upon conjugated polymer junctions to target electrochemical reactions, primarily, the energy intensive water oxidation reaction. Selected for their semiconducting properties, the conjugated polymers were synthesised to form an interpenetrating composite material producing junctions between polymer species. Poly(thieno[3,2-b]thiophene) (PTT) and poly(dithieno[3,2-b:2',3'-d]thiophene) (PDTT) were selected as donor materials for their adequate absorption in the visible range (~500 nm) and synthesised via vapour phase polymerisation (VPP). Both PTT and PDTT were separately blended with poly(3,4-ethylenedioxythiophene) (PEDOT) to form composite alloy materials. PEDOT was selected as a catalytic component and, due to its hole transport capabilities, provides a junction to aid in charge separation, avoiding charge recombination. A multistep VPP process was used to form the alloy materials. This approach allowed a polymer layer (e.g. PEDOT) to be oxidatively polymerised onto a substrate before being suspended in a selected monomer vapour (e.g. PTT or PDTT) chamber. This allowed the monomer to polymerise with the residual oxidant within the initial polymer for a greater interpenetrating network. This was seen as the most productive method for the manufacture of heterojunction materials. Additionally, PTT and PDTT had not previously been polymerised via a vapour phase route. Spectroscopic characterisation indicated a certain level of spontaneous interaction between the blended polymers in the alloy materials obtained, while electrochemical testing demonstrated light enhanced water electrolysis. Further investigation revealed an enhanced electrochemical performance upon annealing these alloy materials and indications of susceptibility to humidity were found. The design of the aforementioned alloy materials to achieve junctions between polymer species is based on the well-known organic photovoltaic materials. As such, it was of value to investigate a well-established bulk heterojunction material, poly(3-hexylthiophene) (P3HT) and phenyl-C61-Butyric acid Methyl ester (PCBM), as an organic photo-electrode. Housing a working heterojunction relationship between P3HT:PCBM, these organic photovoltaic structures offered a suitable platform to support the proof-of-concept of a heterojunction based organic photoelectrode. Investigated in the context of the water electrolysis reaction, a photo-enhanced effect was observed confirming the participation of the active heterojunction in separating and transporting charges for use in electrochemical reactions. Overall, this study presents strong evidence that an organic photoelectrode based upon a heterojunction structure can be synthesised and applied to electrochemical reactions. Thus, a novel avenue is made available in the field of electrocatalysis for future pursuit and development.

Download or read book Synthesis of Polymer supported Reducing Reagents and the Study of Their Catalytic Properties written by Hsueh-Chi Lee and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Treatment of Micropollutants in Water and Wastewater written by Jurate Virkutyte and published by IWA Publishing. This book was released on 2010-08-14 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few years there has been a growing concern over the increasing concentration of micropollutants originating from a great variety of sources including pharmaceutical, chemical engineering and personal care product industries in rivers, lakes, soil and groundwater. As most of the micropollutants are polar and persistent compounds, they are only partially or not at all removed from wastewater and thus can enter the environment posing a great risk to the biota. It is hypothesized that wastewater is one of the most important point sources for micropollutants. Treatment of Micropollutants in Water and Wastewater gives a comprehensive overview of modern analytical methods and will summarize novel single and hybrid methods to remove continuously emerging contaminants - micropollutants from the aqueous phase. New trends (e.g. sensor technology, nanotechnology and hybrid treatment technologies) are described in detail. The book is very timely because the new techniques are still in the development phase and have to be realized not only in the laboratory but also on a larger scale. The content of the book is divided into chapters that present current descriptive and analytical methods that are available to detect and measure micropollutants together with detailed information on various chemical, biological and physicochemical methods that have evolved over the last few decades. Treatment of Micropollutants in Water and Wastewater will also enable readers to make well informed choices through providing an understanding of why and how micropollutants must be removed from water sources, and what are the most appropriate and available techniques for providing a cost and technologically effective and sustainable solutions for reaching the goal of micropollutant-free water and wastewater. The book will be suitable for water and wastewater professionals as well for students and researchers in civil engineering, environmental engineering and process engineering fields.

Download or read book Catalyst Separation Recovery and Recycling written by David J. Cole-Hamilton and published by Springer Science & Business Media. This book was released on 2006-01-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book looks at new ways of tackling the problem of separating reaction products from homogeneous catalytic solutions. The new processes involve low leaching supported catalysts, soluble supports such as polymers and dendrimers and unusual solvents such as water, fluorinated organics, ionic liquids and supercritical fluids. The advantages of the different possibilities are discussed alongside suggestions for further research that will be required for commercialisation. Unlike other books, in addition to the chemistry involved, the book looks at the process design that would be required to bring the new approaches to fruition. Comparisons are given with existing processes that have already been successfully applied and examples are given where these approaches are not suitable. The book includes: - New processes for the separation of products from solutions containing homogeneous catalysts - Catalysts on insoluble or soluble supports – fixed bed catalysts - continuous flow or ultrafiltration - Biphasic systems: water - organic, fluorous - organic, ionic liquid – organic, supercritical fluids (monophasic or biphasic with water, organic or ionic liquid) - Comparisons with current processes involving atmospheric or low temperature distillation - Consideration of Chemistry and Process Design - Advantages and disadvantages of each process exposed - Consideration of what else is need for commercialisation

Download or read book Chemical Oxidation Applications for Industrial Wastewaters written by Olcay Tunay and published by IWA Publishing. This book was released on 2010-10-12 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the most recent scientific and technological developments (state-of-the-art) in the field of chemical oxidation processes applicable for the efficient treatment of biologically-difficult-to-degrade, toxic and/or recalcitrant effluents originating from different manufacturing processes. It is a comprehensive review of process and pollution profiles as well as conventional, advanced and emerging treatment processes & technologies developed for the most relevant and pollution (wet processing)-intensive industrial sectors. It addresses chemical/photochemical oxidative treatment processes, case-specific treatability problems of major industrial sectors, emerging (novel) as well as pilot/full-scale applications, process integration, treatment system design & sizing criteria (figure-of-merits), cost evaluation and success stories in the application of chemical oxidative treatment processes. Chemical Oxidation Applications for Industrial Wastewaters is an essential reference for lecturers, researchers, industrial and environmental engineers and practitioners working in the field of environmental science and engineering. Visit the IWA WaterWiki to read and share material related to this title: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/CHEMICALOXIDATIONAPPLICATIONSFORINDUSTRIALWASTEWATERS Authors: Professor Olcay Tünay, Professor Isik Kabdasli, Associate Professor Idil Arslan-Alaton and Assistant Professor Tugba Ölmez-Hanci, Environmental Engineering Department, Istanbul Technical University, Turkey.

Download or read book Ozonation of Water and Waste Water written by Christiane Gottschalk and published by John Wiley & Sons. This book was released on 2009-12-09 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leading resource on ozone technology, this book contains everything from chemical basics to technical and economic concerns. The text has been updated to include the latest developments in water treatment and industrial processes. Following an introduction, the first part looks at toxicology, reaction mechanisms and full-scale applications, while Part B covers experimental design, equipment and analytical methods, mass transfer, reaction kinetics and the application of ozone in combined processes.

Download or read book Industrial Environmental Chemistry written by Donald T. Sawyer and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph consists of manuscripts submitted by invited speakers who participated in the symposium "Industrial Environmental Chemistry: Waste Minimization in Industrial Processes and Remediation of Hazardous Waste," held March 24-26, 1992, at Texas A&M University. This meeting was the tenth annual international symposium sponsored by the Texas A&M Industry-University Cooperative Chemistry Program (IUCCP). The program was developed by an academic-industrial steering committee consisting of the co-chairmen, Professors Donald T. Sawyer and Arthur E. Martell of the Texas A&M University Chemistry Department, and members appointed by the sponsoring companies: Bernie A. Allen, Jr., Dow Chemical USA; Kirk W. Brown, Texas A&M University; Abraham Clearfield, Texas A&M University; Greg Leyes, Monsanto Company; Jay Warner, Hoechst-Celanese Corporation; Paul M. Zakriski, BF Goodrich Company; and Emile A. Schweikert, Texas A&M University (IUCCP Coordinator). The subject of this conference reflects the interest that has developed in academic institutions and industry for technological solutions to environmental contamination by industrial wastes. Progress is most likely with strategies that minimize waste production from industrial processes. Clearly the key to the protection and preservation of the environment will be through R&D that optimizes chemical processes to minimize or eliminate waste streams. Eleven of the papers are directed to waste minimization. An additional ten papers discuss chemical and biological remediation strategies for hazardous wastes that contaminate soils, sludges, and water.

Download or read book Electro Fenton Process written by Minghua Zhou and published by Springer. This book was released on 2017-11-25 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the theoretical fundamentals and potential applications of the original electro-Fenton (EF) process and its most innovative and promising versions, all of which are classified as electrochemical advanced oxidation processes. It consists of 15 chapters that review the latest advances and trends, material selection, reaction and reactor modeling and EF scale-up. It particularly focuses on the applications of EF process in the treatment of toxic and persistent organic pollutants in water and soil, showing highly efficient removal for both lab-scale and pre-pilot setups. Indeed, the EF technology is now mature enough to be brought to market, and this collection of contributions from leading experts in the field constitutes a timely milestone for scientists and engineers.

Download or read book Polysaccharides as a Green and Sustainable Resources for Water and Wastewater Treatment written by Nurudeen A. Oladoja and published by Springer. This book was released on 2017-05-16 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brief critically reviews the structure and applications of polysaccharide based materials as a green and sustainable resource in water and water treatment operations. The authors present a fascinating insight into the application of this renewable resource in water and wastewater treatment operations approached from multiple perspectives: mechanistic insight into the coagulation efficiency of polysaccharides based coagulants; progress and prospects of polysaccharide composites as adsorbent for water and wastewater treatment; structural modifications of polysaccharides for enhanced performance as adsorbents; tuning polysaccharides framework for optimal coagulation efficiency; and tapping into microbial polysaccharides for water and wastewater purifications.This brief is aimed at professionals active in the science and engineering aspects of water and wastewater treatment operations.

Download or read book Nanotechnology in Industrial Wastewater Treatment written by Dr. Arup Roy and published by IWA Publishing. This book was released on 2015-01-15 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in Industrial Wastewater Treatment is a state of the art reference book. The book is particularly useful for wastewater technology development laboratories and organizations. All professional and academic areas connected with environmental engineering, nanotechnology based wastewater treatment and related product design are incorporated and provide an essentialresource. The book describes the application and synthesis of Ca-based and magnetic nano-materials and their potential application for removal/treatment of heavy metals from wastewater. Nanotechnology in Industrial Wastewater Treatment discusses the rapid wastewater treatment methods using Ca-based nanomaterials and magnetic nanomaterials. This is an emerging area of new science and technology in wastewater treatment. The main audiences for the book are water industry professionals, research scholars and students in the area of Environmental Engineering and Nanotechnology. Authors: Dr. Arup Roy Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur,India; and Professor Jayanta Bhattacharya, Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur, India.

Download or read book Water Purification and Management written by José Coca-Prados and published by Springer Science & Business Media. This book was released on 2010-10-14 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major challenges for many Mediterranean and other countries is finding viable solutions to tackle water shortage. Some of the major water quality constraints derive from the high salinity of groundwater and from pollution sources such as: untreated domestic sewage, fertilizers and pesticides from irrigation drainage, industrial effluents, and solid waste disposal. Wastewater treatment processes involving physico-chemical and biological treatment, chemical oxidation, membrane technologies, along with methods of solids concentration and disposal are of special relevance in dealing with these problems. This volume contains selected lectures presented at the NATO ADVANCED TRAINING COURSE held in Oviedo (November 15-21, 2009) and sponsored by the NATO Science for Peace and Security (SPS) Programme. They cover a variety of topics from wastewater treatment methods to cleaner production strategies, as a careful management of water resources is the basis for sustainable development and to avoid potential security threats. The reader will benefit from a general view of some of the operations involved in wastewater treatment and solid concentration and disposal methods. A proper water reuse and recycling, together with efficient solid disposal, would contribute to a better use of the resources and a sustainable economic growth, particularly in many arid lands of the world.

Download or read book Biofilms in Medicine Industry and Environmental Biotechnology written by Piet Lens and published by IWA Publishing. This book was released on 2003-04-30 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofilms are of great practical importance for beneficial technologies such as water and wastewater treatment and bioremediation of groundwater and soil. In other settings biofilms cause severe problems, for example in 65% of bacterial infections currently treated by clinicians (particularly those associated with prosthetics and implants), accelerated corrosion in industrial systems, oil souring and biofouling. Until recently, the structure and function of biofilms could only be inferred from gross measures of biomass and metabolic activity. This limitation meant that investigators involved in biofilm research and application had only a crude understanding of the microbial ecology, physical structure and chemical characteristics of biofilms. Consequently, opportunities for the exploitation and control of biofilms were very limited. The past decade has witnessed the development of several new techniques to elucidate the structure and function of biofilms. Examples include: the use of molecular probes that identify different microbes in complex communities as well as their metabolic functions; the use of microsensors that show concentration gradients of key nutrients and chemicals; the use of confocal laser scanning microscopy to describe the physical structure of biofilms and the development of a new generation of mathematical models that allow for the prediction of biofilm structure and function. However, much progress remains to be made in efforts to understand, control and exploit biofilms. This timely book will introduce its readers to the structure and function of biofilms at a fundamental level as determined during the past decade of research, including: Extracellular polymers as the biofilm matrix; Biofilm phenotype (differential gene expression, interspecies signalling); Biofilm ecology; Biofilm monitoring; Resistance of biofilms to antimicrobial agents and Biofilm abatement. Biofilms in Medicine, Industry and Environmental Technology offers a holistic and multi-disciplinary description of the topic, including biofilm formation and composition, but also biofilm monitoring, disinfection and control. All these aspects are presented from three points of views: medical, industrial and environmental biotechnological in a compact, easy to read format.