Download or read book Preliminary Evaluation of Solvent extraction and written by and published by . This book was released on 2002 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several potential processes are described and evaluated for their suitability in a multitier aqueous-based approach to processing dissolved spent nuclear fuel under the Advanced Accelerator Applications (AAA) program. The evaluation is focused on solvent extraction and ion exchange technologies that have been demonstrated to varying degrees. The goals of the program are to separate uranium (U), technetium (Tc), and the transuranic (TRU) elements from the fission products that are to be vitrified for disposal as high-level waste (HLW). Uranium will be disposed as low-level waste (LLW); Tc and TRU will be transmuted in an accelerator. A number of processes have been examined. The focus was on liquid-liquid solvent extraction processes because of their relatively high state of development and their suitability for high-throughput-rate processing. Ion exchange processes were also examined. PUREX and UREX were evaluated as options for recovery of uranium; UREX is also an option for Tc recovery. Solvent extraction options examined for TRU recovery included TRUEX, DIAMEX, and TRPO, as well as some based on TBP extraction. Processes for trivalent actinide separation from lanthanides were also examined. The PUREX processes have been developed over many years, and have been refined to a significant degree. In the first cycle, U and plutonium (Pu) are co-extracted from dissolved spent fuel solutions by TBP in a diluent, selectively stripped, and purified in additional extraction/strip cycles. Neptunium (Np) can be extracted or driven into the raffinate by adjusting the oxidation state. Trivalent actinides and fission products remain predominantly in the raffinate, although a significant Tc fraction will co-extract with the U and Pu.
Download or read book Solvent Extraction written by Vladimir S Kislik and published by Elsevier. This book was released on 2011-08-31 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main challenge in modern solvent extraction separation is that most techniques are mainly empirical, specific and particular for narrow fields of practice and require a large degree of experimentation. This concise and modern book provides a complete overview of both solvent extraction separation techniques and the novel and unified competitive complexation/solvation theory. This novel and unified technique presented in the book provides a key for a preliminary quantitative prediction of suitable extraction systems without experimentation, thus saving researchers time and resources. Analyzes and compares both classical and new competitive models and techniques Offers a novel and unified competitive complexation / solvation theory that permits researchers to standardize some parameters, which decreases the need for experimentation at R&D Presents examples of applications in multiple disciplines such as chemical, biochemical, radiochemical, pharmaceutical and analytical separation Written by an outstanding scientist who is prolific in the field of separation science
Download or read book Guide to Conducting Treatability Studies Under CERCLA written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Phase Extraction written by Colin F. Poole and published by Elsevier. This book was released on 2019-08-29 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book The Solvent Extraction of Complex Mixtures a Preliminary Study Considering the System Phenol oil written by and published by . This book was released on 1954 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent Microextraction written by John M Kokosa and published by John Wiley & Sons. This book was released on 2009-10-05 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers both a practical as well a theoretical approach to Solvent Microextraction (SME) and will help analytical chemists to evaluate SME for a given sample preparation. Introductory chapters overview a comparison of SME with other sample preparation methods, a summary of the technical aspects, and a detailed theoretical treatment of SME. The book then describes the practical aspects of the technique, with detailed “how to” chapters devoted to the preparation and analysis of atmospheric, solid and liquid environmental, clinical and industrial samples. This text will serve as both a handy laboratory desk-reference and an indispensible instructional tool.
Download or read book Green Extraction of Natural Products written by Farid Chemat and published by John Wiley & Sons. This book was released on 2016-03-11 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extraction processes are essential steps in numerous industrial applications from perfume over pharmaceutical to fine chemical industry. Nowadays, there are three key aspects in industrial extraction processes: economy and quality, as well as environmental considerations. This book presents a complete picture of current knowledge on green extraction in terms of innovative processes, original methods, alternative solvents and safe products, and provides the necessary theoretical background as well as industrial application examples and environmental impacts. Each chapter is written by experts in the field and the strong focus on green chemistry throughout the book makes this book a unique reference source. This book is intended to be a first step towards a future cooperation in a new extraction of natural products, built to improve both fundamental and green parameters of the techniques and to increase the amount of extracts obtained from renewable resources with a minimum consumption of energy and solvents, and the maximum safety for operators and the environment.
Download or read book Liquid liquid Extraction written by Ruth Blumberg and published by . This book was released on 1988 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symposium on Solvent Extraction in the Analysis of Metals written by American Society for Testing and Materials. Committee E-3 on Chemical Analysis of Metals and published by . This book was released on 1958-01-01 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Investigation on Solvent Extraction Kinetics written by David J. MacDonald and published by . This book was released on 1984 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Evaluation to Determine Whether Supported Liquid Membrane Technology is a Viable Technique to Recover Metals from Acid Mine Drainage written by Richard May and published by [Fredericton] : New Brunswick, Natural Resources and Energy. This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Evaluation to Determine Whether Supported Liquid Membrane Technology is a Viable Technique to Recover Metals from Acid Mine Drainage written by R. A. J. May and published by . This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many streams from mine sites in N.B. contain significant quantities of heavy metals which might be recovered. At present, the effluent is treated by adding either lime or limestone to the stream and precipitating dissolved heavy metals as hydroxides and sulphate as gypsum. One novel method to recover dissolved metals is solvent extraction using supported liquid membrane technology, a technique which appears to offer economic potential. While it has not been tried in the mining industry, variations of it are used in the food and pharmaceutical industries. This study determined whether supported liquid membrane technology is a viable method for recovering metals, particularly zinc, from acidic drainage streams. Experiments were carried out with a laboratory membrane mediated test unit.
Download or read book Extraction Methods in Organic Analysis written by Alan John Handley and published by Blackwell. This book was released on 1999 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume in a new series, Sheffield Analytical Chemistry, which presents the state of the art in chosen sectors of analytical chemistry. In this volume, authors drawn from respected laboratories around the world cover conventional and more recent techniques of extraction and sample preparation - crucial elements in accurate analysis. In recent years, there has been an explosion of interest in new methodologies, fuelled by the need for faster and simpler analysis, but until now there has been no book dedicated to this important area. Each chapter covers some background theory, the available instrumentation and the strengths and weaknesses of the method. Key applications areas are then addressed. This is a book for analytical chemists, organic chemists, environmental scientists, food scientists, pharmaceutical chemists, polymer chemists and earth scientists working in the academic and industrial sectors.
Download or read book Solvent Extraction in Biotechnology written by Karl Schügerl and published by Springer Science & Business Media. This book was released on 1994 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solvent Extraction in Biotechnology deals with the reco- very and purification of primary and secondary metabolites by solvent extraction. In the first part the reaction engineering principles: definitions, thermodynamic fundamentals, and system models, the kinetics of mass transfer between two phases without and with chemical reaction as well as extraction equipment, which are important for downstream processing in biotechnology, are considered in detail. The special part of the book describes the recovery of low-molecular metabolites: alcohols, acids and antibiotics with organic solvents, carrier-modifier-solvent systems, supercritical gases as well as with liquid membrane techniques. Several practical examples are given for the recovery of different metabolites as well as for the calculation of the extraction processes necessary for equipment design. Besides solvent extraction, novel separation techniques with liquid membrane, microemulsion and reversed micelles are also presented. This book will introduce the biochemical engineer and process engineer to the recovery of products from complex cultivation broths by modern techniques of solvent extraction and help them with process design.
Download or read book Assessment of Solvent Extraction for Treatment of Coal Gasifier Wastewater Progress Report 19 Refs written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A preliminary study has been completed for the assessment of solvent extraction for coal gasifier wastewater treatment. This study shows very favorable economics; wastewater contaminants have a market value of about $45.00 per 1000 gallons of water to be treated while treatment costs are about $1.25 to $2.50 per 1000 gallons. Measurements of distribution coefficients between water and various solvents has been completed for m-dihydroxybenzene (resorcinol) and is in progress for o- and p-dihydroxybenzene, pyridine, o-cresol, and naphthol. A very high distribution coefficient of 40 was found for m-dihydroxybenzene between water and octanone-2 (methyl heptyl ketone).
Download or read book Natural Products Isolation written by Satya D. Sarker and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “natural products” spans an extremely large and diverse range of chemical compounds derived and isolated from biological sources. Our interest in natural products can be traced back thousands of years for their usefulness to humankind, and this continues to the present day. Compounds and extracts derived from the biosphere have found uses in medicine, agriculture, cosmetics, and food in ancient and modern societies around the world. Therefore, the ability to access natural products, understand their usefulness, and derive applications has been a major driving force in the field of natural product research. The first edition of Natural Products Isolation provided readers for the first time with some practical guidance in the process of extraction and isolation of natural products and was the result of Richard Cannell’s unique vision and tireless efforts. Unfortunately, Richard Cannell died in 1999 soon after completing the first edition. We are indebted to him and hope this new edition pays adequate tribute to his excellent work. The first edition laid down the “ground rules” and established the techniques available at the time. Since its publication in 1998, there have been significant developments in some areas in natural product isolation. To capture these developments, publication of a second edition is long overdue, and we believe it brings the work up to date while still covering many basic techniques known to save time and effort, and capable of results equivalent to those from more recent and expensive techniques.
Download or read book Developments in Solvent Extraction written by S. Alegret and published by Ellis Horwood. This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
