Download or read book Extraction of Heavy Metals and Organic Acids Using Emulsion Liquid Membranes written by Chia-Chung Wang and published by . This book was released on 1988 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Membranes written by Vladimir S Kislik and published by Elsevier. This book was released on 2009-08-31 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Membranes: Principles and Applications in Chemical Separations and Wastewater Treatment discusses the principles and applications of the liquid membrane (LM) separation processes in organic and inorganic chemistry, analytical chemistry, biochemistry, biomedical engineering, gas separation, and wastewater treatment. It presents updated, useful, and systematized information on new LM separation technologies, along with new developments in the field. It provides an overview of LMs and LM processes, and it examines the mechanisms and kinetics of carrier-facilitated transport through LMs. It also discusses active transport, driven by oxidation-reduction, catalytic, and bioconversion reactions on the LM interfaces; modifications of supported LMs; bulk aqueous hybrid LM processes with water-soluble carriers; emulsion LMs and their applications; and progress in LM science and engineering. This book will be of value to students and young researchers who are new to separation science and technology, as well as to scientists and engineers involved in the research and development of separation technologies, LM separations, and membrane reactors. Provides comprehensive knowledge-based information on the principles and applications of a variety of liquid membrane separation processes Contains a critical analysis of new technologies published in the last 15 years
Download or read book Emulsion Liquid Membrane Extraction of Heavy Metals Using Hollow fiber Contractors written by Shih-Yao Barry Hu and published by . This book was released on 1997 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Separations with Liquid Membranes written by Richard A. Bartsch and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews a variety of liquid membrane configurations, transport mechanisms, and experimental techniques. Describes separations of metal ions, anionic species, organic molecules, and gas mixtures that involve liquid membrane processes. Provides coverage of theory, including mechanisms, carrier design and synthesis, and applications in chemical separations. Covers a broad range of separation processes, including carbon dioxide from nitrogen, unsaturated hydrocarbons, individual transition and heavy metal cations, selenium from contaminated waters, radiotoxic species from nuclear wastes, and sugars from aqueous solutions. Presents state-of-the-art information for both the novice and practitioner.
Download or read book Copper and Nickel Extraction Using Emulsion Liquid Membranes written by Hao Ma and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Emulsion liquid membrane (ELM) technique is a modified technique that combines the traditional solvent extraction and stripping in a single unit operation. The characteristics of ELM include the large interfacial area and high selectivity when treating heavy metal ions. Through the study of applying ELM technique in extracting and stripping copper and nickel from single cation bearing solutions, this thesis targets at the extraction and separation of different metal ions including copper, nickel and calcium from a synthetic wastewater stream by using the minimum reagent and energy consumption. A two-stage mixer-settler was eventually built-up and implemented to test the extraction and separation efficiency of ELM.As for copper extraction, the extractant used was LIX 984N, four factors were screened out as important ones: extractant concentration; W/O/W emulsion stirring time; W/O/W emulsion stirring speed; and CuSO4 solution/emulsion volume ratio. The other factors were not important thus they were fixed at constant value. The optimum operating condition of copper extraction is determined to be: CuSO4 solution/primary emulsion volume ratio of 3.2; extractant concentration of 6.7 wt %; H2SO4 concentration of 4.6 mol/L; W/O/W emulsion stirring time of 24 minutes; and W/O/W emulsion stirring speed of 415 rpm (1 rpm = 1/60 Hz=[pi]/30 rad/s). As for nickel extraction, the extractant used was Cyanex 301, the optimum laboratory conditions were: extractant concentration of 7.2 wt %; stripping solution (H2SO4) concentration of 0.5 mol/L; NiSO4 solution pH of 4.5; and NiSO4 solution/emulsion volume ratio of 3.5. A series of comparison tests between ELM technique and traditional solvent extraction technique were performed and the following results were found: The loading capacity tests showed that emulsion phase had a higher nickel extraction capacity (8.128 g Ni (II)/100 g Cyanex 301) than the organic phase (5.240 g Ni (II)/100 g Cyanex 301). The kinetics tests showed that the emulsion phase and the organic phase had a mass transfer coefficient of 2.823 × 10-7 (m/s) and 3.192 × 10-7 (m/s) respectively. After the process optimization and chemical characteristics have been explored for ELM treating copper and nickel ions separately, the selective extraction and separation of copper and nickel from calcium ion in a synthetic wastewater solution mimicking the nickel mine tailings from Sudbury, Ontario was investigated. The solution had a copper concentration of 10 ppm, nickel concentration of 20 ppm; an averaged calcium concentration of 250 ppm and its pH was 4.0. Two stages were implemented. In the first stage, LIX 984N was used as copper extractant, the optimum operating conditions were: extractant concentration of 0.97 wt %, H2SO4 concentration of 0.5 mol/L, W/O/W emulsion stirring time of 22.5 minutes and synthetic solution/emulsion volume ratio of 4.0. The copper removal rate was 96.7% while nickel and calcium removal rate was only 0.9 % and 1.3%; In the second stage, a mixture of LIX 984N and Cyanex 301 at a volume ratio of 1 to 1 was used as extractant, and the optimum operating conditions were: extractant concentration of 6.7 wt %, H2SO4 concentration of 5.7 mol/L, W/O/W emulsion stirring time of 25 minutes and synthetic solution/emulsion volume ratio of 3.5. The nickel removal rate was 99.0% while the calcium removal rate was 0.55%. A two-stage bench-scale mixer-settler proved the process of using ELM to extract and separate these metal ions was successful under these optimum conditions obtained." --
Download or read book Membrane Technologies for Heavy Metal Removal from Water written by Juhana Jaafar and published by CRC Press. This book was released on 2024-02-12 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers lucid treatment of fundamental concepts related to potential applications and prospects of different membranes for wastewater decontamination by removing heavy metals. Divided into four sections, it provides an overview of different sources of water contamination, their impacts on human health and the environment, and compares traditional methods used to nullify these impacts. Further, it covers different mature membrane technologies such as polymeric membranes, poly-ceramic membranes, carbon-based membranes and many more, followed by pertinent case studies. Features: Focuses on the removal of heavy metals using membrane-based technologies Discusses pertinent criteria to select suitable membranes Includes feasibility studies and applications of different mature and emerging membranes Describes heavy metals' occurrence and transport in an aqueous system with an overview of the adverse effects Reviews challenges and opportunities associated with using different membranes This book is aimed at graduate students and researchers in materials science, water engineering and wastewater treatment.
Download or read book Wastewater Engineering Advanced Wastewater Treatment Systems written by Hamidi Abdul Aziz and published by IJSR Publications. This book was released on 2014-04-01 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the global population grows and many developing countries modernize, the importance of water supply and wastewater treatment becomes a much greater factor in the welfare of nations. Clearly, in today’s world the competition for water resources coupled with the unfortunate commingling of wastewater discharges with freshwater supplies creates additional pressure on treatment systems. Recently, researchers focus on wastewater treatment by difference methods with minimal cost and maximum efficiency. This volume of the Wastewater Engineering: Advanced Wastewater Treatment Systems is a selection of topics related to physical-chemical and biological processes with an emphasis on their industrial applications. It gives an overview of various aspects in wastewater treatments methods including topics such as biological, bioremediation, electrochemical, membrane and physical-chemical applications. Experts in the area of environmental sciences from diverse institutions worldwide have contributed to this book, which should prove to be useful to students, teachers, and researchers in the disciplines of wastewater engineering, chemical engineering, environmental engineering, and biotechnology. We gratefully acknowledge the cooperation and support of all the contributing authors.
Download or read book Development and Optimization of Novel Emulsion Liquid Membranes Stabilized by Non newtonian Conversion in Taylor couette Flow for Extraction of Selected Organic and Metallic Contaminants written by Yonggyun Park and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Extraction processes employing emulsion liquid membranes (ELMs), water-in-oil emulsions dispersed in aqueous phase, have been shown to be highly efficient in removing a variety of organic and inorganic contaminants from industrial wastewaters. As a result, they have been considered as alternative technologies to other more common separation processes such as pressure-driven membrane processes. Unfortunately, a widespread use of the ELM process has been limited due to the instability of emulsion globules against fluid shear. Breakup of emulsions and subsequent release of the internal receptor phase to the external donor phase would nullify the extraction process. Numerous studies have been, therefore, made in the past to enhance the stability of ELMs. Examples include adding more surfactants into the membrane phase and increasing the membrane viscosity. However, increased stability has been unfortunately accompanied by loss in extraction efficiency and rate in most reported attempts. The primary objective of this research is to apply the ELMs in a unique contacting device, a Taylor-Couette column, which provides a relatively low and uniform fluid shear that helps maintaining the stability of emulsion without compromising the extraction efficiency of a target compound. The ELM used in this study is made of membrane phase converted into non-Newtonian fluid by polymer addition, which provides additional uncommon remedy for the problem. This innovative ELM process was optimized to treat various types of simulated industrial wastewaters containing selected phenolic compounds and heavy metals. Experiments performed in this study suggested that the newly developed ELM process achieved exceptionally high overall removal efficiencies for the removal of these target compounds in relatively short contact time. Mechanistic predictive models were further developed and verified with the experimental data. Combined with the experimental data and novel mathematical predictive models, this study is expected to have a high impact on immediate practices of emulsion liquid membrane technologies in relevant industries.
Download or read book Handbook of Membrane Separations written by Anil K. Pabby and published by CRC Press. This book was released on 2008-07-07 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Membrane Separations: Chemical, Pharmaceutical, and Biotechnological Applications provides detailed information on membrane separation technologies as they have evolved over the past decades. To provide a basic understanding of membrane technology, this book documents the developments dealing with these technologies. It explores chemical, pharmaceutical, food processing and biotechnological applications of membrane processes ranging from selective separation to solvent and material recovery. This text also presents in-depth knowledge of membrane separation mechanisms, transport models, membrane permeability computations, membrane types and modules, as well as membrane reactors.
Download or read book Nanostructured Polymer Membranes Volume 1 written by Visakh P. M. and published by John Wiley & Sons. This book was released on 2016-11-18 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to serve as a "one-stop" reference resource for important research accomplishments in the area of nanostructured polymer membranes and their processing and characterizations. It will be a very valuable reference source for university and college faculties, professionals, post-doctoral research fellows, senior graduate students, and researchers from R&D laboratories working in the area of polymer nanobased membranes. The various chapters are contributed by prominent researchers from industry, academia and government/private research laboratories across the globe and comprise an up-to-date record on the major findings and observations in the field.
Download or read book Handbook of Industrial and Hazardous Wastes Treatment written by Lawrence K. Wang and published by CRC Press. This book was released on 2004-06-29 with total page 1489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting effective, practicable strategies modeled from ultramodern technologies and framed by the critical insights of 78 field experts, this vastly expanded Second Edition offers 32 chapters of industry- and waste-specific analyses and treatment methods for industrial and hazardous waste materials-from explosive wastes to landfill leachate to wastes produced by the pharmaceutical and food industries. Key additional chapters cover means of monitoring waste on site, pollution prevention, and site remediation. Including a timely evaluation of the role of biotechnology in contemporary industrial waste management, the Handbook reveals sound approaches and sophisticated technologies for treating textile, rubber, and timber wastes dairy, meat, and seafood industry wastes bakery and soft drink wastes palm and olive oil wastes pesticide and livestock wastes pulp and paper wastes phosphate wastes detergent wastes photographic wastes refinery and metal plating wastes power industry wastes This state-of-the-art Second Edition is required reading for pollution control, environmental, chemical, civil, sanitary, and industrial engineers; environmental scientists; regulatory health officials; and upper-level undergraduate and graduate students in these disciplines.
Download or read book Solvent Extraction and Liquid Membranes written by Manuel Aguilar and published by CRC Press. This book was released on 2008-04-07 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: The applications of solvent extraction (SX) and liquid membranes (LM) span chemistry, metallurgy, hydrometallurgy, chemical/mineral processing, and waste treatment-making it difficult to find a single resource that encompasses fundamentals as well as advanced applications. Solvent Extraction and Liquid Membranes: Fundamentals and Applicat
Download or read book Recent Developments in Separation Science written by Po Li. N N and published by CRC Press. This book was released on 2018-05-04 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 1 of the book discusses such topics as absorption, chromatography, crystallization, microcapsules, adsubble methods, chemical complexing, parametric pumping, molecular sieve adsorption, enzyme membrane systems, immobilized solvent membranes and liquid surfactant membranes.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling the Extraction of Organic Acids by Supported Liquid Membranes written by German E. Aroca Arcaya and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Membrane Handbook written by Winston Ho and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane processes have wide industrial ap This handbook reviews the published litera plications covering many existing and emerging ture, presents an in-depth description of com uses in the chemical, petrochemical, petroleum, mercialized membrane processes, and gives a state-of-the-art review of new membrane pro environmental, water treatment, pharmaceutic al, medical, food, dairy, beverage, paper, tex cess concepts under development. It is intended tile, and electronic industries. The existing ap to be a single source of underlying principles, membranes, membrane modules, process de plications include: (1) dialysis for the purifica tion of human blood (the artificial kidney), (2) sign, applications, and cost estimates. It is also electrodialysis for the desalination of brackish a first attempt to bridge the gap between the water to produce potable water, (3) reverse theory and practice. osmosis for the desalination of seawater, (4) There are several groups which may benefit ultrafiltration for the concentration of large pro from this handbook. It can be used as educa tein molecules from cheese, casein whey, and tional material for industrial personnel engaged milk, and (5) microfiltration for the sterilization in membrane separations. For scientists and of pharmaceutical and medical products, beer, engineers active in research and development in wine, and soft drinks. Since membrane pro synthetic membranes, it will serve as a single cesses generally have low capital investment, as source of reference for the entire field.
Download or read book Remediation of Heavy Metals written by Inamuddin and published by Springer Nature. This book was released on 2021-11-10 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents recent remediation techniques for heavy metal contamination in wastewater, with a focus on recently-developed and sustainable materials such as metal oxides and their composites, two-dimensional materials, organic-inorganic ion exchange materials, nanomaterials, bagasse, and olive-oil waste chelating materials. Chapters also describe the analysis of heavy metals, membranes for water treatment, sources and impact of heavy metals and opportunities and challenges in heavy metal remediation.
