A Method For Separating Water Soluble Organics From A Process Stream By Aqueous Biphasic Extraction
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A Method For Separating Water Soluble Organics From A Process Stream By Aqueous Biphasic Extraction
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Author :
language : en
Publisher:
Release Date : 2001
A Method For Separating Water Soluble Organics From A Process Stream By Aqueous Biphasic Extraction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
The present invention relates to a method for separating water-miscible organic species from a process stream by aqueous biphasic extraction. In particular, the method includes extracting the organic species into a polymer-rich phase of an aqueous biphase system in which the process stream comprises the salt-rich phase, and, next, separating the polymer from the extracted organic species by contacting the loaded, polymer-rich phase with a water-immiscible organic phase. Alternatively, the polymer can be separated from the extracted organic species by raising the temperature of the loaded, polymer-rich phase above the cloud point, such that the polymer and the water-soluble organic species separate into two distinct aqueous phases. In either case, a substantially salt-free, concentrated aqueous solution containing the organic species is recovered.
Method For Separating Water Soluble Organics From A Process Stream By Aqueous Biphasic Extraction
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Author :
language : en
Publisher:
Release Date : 1999
Method For Separating Water Soluble Organics From A Process Stream By Aqueous Biphasic Extraction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
A method for separating water-miscible organic species from a process stream by aqueous biphasic extraction is provided. An aqueous biphase system is generated by contacting a process stream comprised of water, salt, and organic species with an aqueous polymer solution. The organic species transfer from the salt-rich phase to the polymer-rich phase, and the phases are separated. Next, the polymer is recovered from the loaded polymer phase by selectively extracting the polymer into an organic phase at an elevated temperature, while the organic species remain in a substantially salt-free aqueous solution. Alternatively, the polymer is recovered from the loaded polymer by a temperature induced phase separation (cloud point extraction), whereby the polymer and the organic species separate into two distinct solutions. The method for separating water-miscible organic species is applicable to the treatment of industrial wastewater streams, including the extraction and recovery of complexed metal ions from salt solutions, organic contaminants from mineral processing streams, and colorants from spent dye baths.
Actinide Recovery Using Aqueous Biphasic Extraction
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Author :
language : en
Publisher:
Release Date : 1992
Actinide Recovery Using Aqueous Biphasic Extraction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Aqueous biphasic extraction systems are being developed to treat radioactive wastes. The separation technique involves the selective partitioning of either solutes or colloid-size particles between two scible aqueous phases. Wet grinding of plutonium residues to an average particle size of one micron will be used to liberate the plutonium from the bulk of the particle matrix. The goal is to produce a plutonium concentrate that will integrate with existing and developing chemical recovery processes. Ideally, the process would produce a nonTRU waste stream. Coupling physical beneficiation with chemical processing will result in a substantial reduction in the volume of mixed wastes generated from dissolution recovery processes. As part of this program, we will also explore applications of aqueous biphasic extraction that include the separation and recovery of dissolved species such as metal ions and water-soluble organics. The expertise and data generated in this work will form the basis for developing more cost-effective processes for handling waste streams from environmental restoration and waste management activities within the DOE community. This report summarizes the experimental results obtained during the first year of this effort. Experimental efforts were focused on elucidating the surface and solution chemistry variables which govern partitioning behavior of plutonium and silica in aqueous biphasic extraction systems. Additional efforts were directed toward the development of wet grinding methods for producing ultrafine particles with diameters of one micron or less.
Official Gazette Of The United States Patent And Trademark Office
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Author : United States. Patent and Trademark Office
language : en
Publisher:
Release Date : 1999
Official Gazette Of The United States Patent And Trademark Office written by United States. Patent and Trademark Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Patents categories.
Critical Fluid Extraction Of Organics From Water Volume Ii Experimental Final Report 1 October 1979 30 November 1983
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Author :
language : en
Publisher:
Release Date : 1984
Critical Fluid Extraction Of Organics From Water Volume Ii Experimental Final Report 1 October 1979 30 November 1983 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
Critical fluid extraction has been tested at the pilot plant scale as a method of separating organics from water. The process employed resembles a liquid-liquid extraction in which the solvent is near-critical carbon dioxide and the feed is an organic in aqueous solution. Carbon dioxide's solvent and other thermodynamic properties, and the effective utilization of a vapor recompression cycle in the process design have significantly reduced the energy required for these separations. This process is an energy-conserving alternative to the distillation processes which are currently employed. The objectives of this portion of the project were to demonstrate the feasibility of this technology and to gather the engineering data required to evaluate the process. Three alcohols were tested in these experiments - ethanol, isopropanol and sec-butanol - and were all successfully extracted.
Liquid Biphasic System
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Author : Pau Loke Show
language : en
Publisher: Elsevier
Release Date : 2020-11-28
Liquid Biphasic System written by Pau Loke Show and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-28 with Technology & Engineering categories.
Downstream bioprocesses have a significant role to play in the creation of a sustainable bio-based economy, enabling the creation of new products and systems from the more sustainable bioprocessing of natural products. Liquid Biphasic System: Fundamentals, Methods, and Applications in Bioseparation Technology explores in detail the fundamental processes and applications of this new separation system, aiding understanding of the basic principles of the technique and offering constructive criticisms on the latest findings. Including coverage of the background, principles, mechanisms, and applications, Liquid Biphasic System addresses how to adapt the technology for the purification of useful compounds with greater cost efficiency and greener processing. It is essential reading for bioprocess engineers, biochemical engineers, biosystem engineers, chemists and microbiologists working in the fields of bioprocessing. Researchers, scientists, and engineers concerned with the selection and evaluation of alternative bioseparation processes will find the book particularly useful. Provides information and examples of advanced separations in a single source Includes detailed descriptions of novel bioseparation systems Covers the latest technologies related to advanced liquid–liquid separation and their applications in various industries
Downstream Process Technology A New Horizon In Biotechnology
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Author : Krishna Kant Prasad
language : en
Publisher: PHI Learning Pvt. Ltd.
Release Date : 2010-01-30
Downstream Process Technology A New Horizon In Biotechnology written by Krishna Kant Prasad and has been published by PHI Learning Pvt. Ltd. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-30 with Mathematics categories.
Today, biochemical process industry demands fast and economic processes for the partitioning and purification of biomolecules that give high yield and high purity of the product. An integral and cost intensive part of these processes is associated with downstream processing for product isolation and purification. The aim of this comprehensive text is to provide an insightful overview of the whole aspects of downstream processing for biochemical product recovery. Intended for undergraduate and postgraduate students of biotechnology and chemical engineering, this self-contained text includes the chapters based on the recent developments in the industry and academics. It covers the importance of the downstream processing in terms of its relevancy to modern days ever-changing consumer needs, process design criteria relevance to set objectives, and physicochemical factors that help to formulate the strategy to develop a configuration among the raw material, methodology and instruments. This overview is followed by different downstream processing steps. The text concludes with the discussion on stabilization of the product to improve the shelf life of the product. Key Features Includes detailed biological, mathematical, chemical and physical aspects of downstream processing. Distinguishes downstream processing from analytical bioseparation. Contains numerous illustrations and solved problems.
Catalyst Separation Recovery And Recycling
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Author : David J. Cole-Hamilton
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-13
Catalyst Separation Recovery And Recycling written by David J. Cole-Hamilton and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-13 with Science categories.
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
Solvent Extraction Principles And Practice Revised And Expanded
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Author : Jan Rydberg
language : en
Publisher: CRC Press
Release Date : 2004-03-03
Solvent Extraction Principles And Practice Revised And Expanded written by Jan Rydberg and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-03-03 with Science categories.
A complete and up-to-date presentation of the fundamental theoretical principles and many applications of solvent extraction, this enhanced Solvent Extraction Principles and Practice, Second Edition includes new coverage of the recent developments in solvent extraction processes, the use of solvent extraction in analytical applications and waste re
Liquid Phase Extraction
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Author : Colin F. Poole
language : en
Publisher: Elsevier
Release Date : 2019-08-29
Liquid Phase Extraction written by Colin F. Poole and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-29 with Science categories.
Liquid Phase Extraction thoroughly presents both existing and new techniques in liquid phase extraction. It not only provides all information laboratory scientists need for choosing and utilizing suitable sample preparation procedures for any kind of sample, but also showcases the contemporary uses of sample preparation techniques in the most important industrial and academic project environments, including countercurrent chromatography, pressurized-liquid extraction, single-drop Microextraction, and more. Written by recognized experts in their respective fields, it serves as a one-stop reference for those who need to know which technique to choose for liquid phase extraction. Used in conjunction with a similar release, Solid Phase Extraction, it allows users to master this crucial aspect of sample preparation. Defines the current state-of-the-art in extraction techniques and the methods and procedures for implementing them in laboratory practice Includes extensive referencing that facilitates the identification of key information Aimed at both entry-level scientists and those who want to explore new techniques and methods