Author: Steven Michael Brien
Publisher:
ISBN:
Category : Phenols
Languages : en
Pages : 140

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Author: Joseph Lewis Buckle
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Author: Paul Stevenson
Publisher: CRC Press
ISBN: 1466558520
Category : Medical
Languages : en
Pages : 204

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Book Description
Foam fractionation is a separation process in which proteins and other amphipathic species adsorb to the surface of bubbles. The bubbles are then removed from the solution in the form of foam at the top of a column. Due to its cost-effectiveness, foam fractionation has the potential for rapid commercial growth, especially in biotechnology.To assist

Author: Robert Lemlich
Publisher: Elsevier
ISBN: 0323154816
Category : Technology & Engineering
Languages : en
Pages : 349

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Book Description
Adsorptive Bubble Separation Techniques focuses on the mechanisms of the various adsorptive bubble separation methods. This book examines the various adsorptive bubble separation techniques, including ion flotation, foam fractionation, precipitate flotation, mineral flotation, bubble fractionation, and solvent sublation. Organized into 20 chapters, this book starts with an overview of the certain important properties of foam. This text then examines the results of several separations, as well as the results of additional studies into the mechanisms of the different techniques. Other chapters explain the studies of foam separation in the case of synthetic solutions, which provide a good knowledge of the extraction mechanisms of the radioactive cations, cesium, cerium, and strontium. This book discusses as well the experimental and theoretical work on foam separation done in Israel. The final chapter deals with the separation of surfactants and metallic ions at various places around the world. This book is a valuable resource for materials scientists, engineers, and chemists.

Author: James Lawrence Bixby
Publisher:
ISBN:
Category :
Languages : en
Pages : 202

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Author: Loree Joanne Poole
Publisher:
ISBN:
Category :
Languages : en
Pages : 568

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Author: Barry L. Karger
Publisher:
ISBN:
Category :
Languages : en
Pages : 56

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A simplified apparatus has been developed for the recovery and concentration of ionic species by foam fractionation. The process involves total reflux by thermal breakage of foam at the top of the column. Mechanical breakage can also be used when heat sensitive materials are used. The system has been applied to several dyes initially and then to the successful recovery of phospholipids and trace concentrations of salts of fatty acids. Solvent sublation has also been investigated as a selective separation technique. Exploratory studies indicate that the extraction process is kinetically controlled and that time might therefore be an effective separation parameter. (Author).

Author: Jacob Joseph Bikerman
Publisher:
ISBN:
Category :
Languages : en
Pages : 52

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Author: Jack L. Karn
Publisher:
ISBN:
Category : Phenols
Languages : en
Pages : 58

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 148

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Book Description
Two novel regenerated solvent extraction processes are examined. The first process has the potential to reduce the energy costs inherent in the recovery of low-volatility carboxylic acids from dilute aqueous solutions. The second process has the potential for reducing the energy costs required for separate recovery of ammonia and acid gases (e.g. CO2 and H2S) from industrial sour waters. The recovery of carboxylic acids from dilute aqueous solution can be achieved by extraction with tertiary amines. An approach for regeneration and product recovery from such extracts is to back-extract the carboxylic acid with a water-soluble, volatile tertiary amine, such as trimethylamine. The resulting trimethylammonium carboxylate solution can be concentrated and thermally decomposed, yielding the product acid and the volatile amine for recycle. Experimental work was performed with lactic acid, SUCCiOlC acid, and fumaric acid. Equilibrium data show near-stoichiometric recovery of the carboxylic acids from an organic solution of Alamine 336 into aqueous solutions of trimethylamine. For fumaric and succinic acids, partial evaporation of the aqueous back extract decomposes the carboxylate and yields the acid product in crystalline form. The decomposition of aqueous solutions of trimethylammonium lactates was not carried out to completion, due to the high water solubility of lactic acid and the tendency of the acid to self-associate. The separate recovery of ammonia and acid gases from sour waters can be achieved by combining steam-stripping of the acid gases with simultaneous removal of ammonia by extraction with a liquid cation exchanger. The use of di-2,4,4-trimethylpentyl phosphinic acid as the liquid cation exchanger is explored in this work. Batch extraction experiments were carried out to measure the equilibrium distribution ratio of ammonia between an aqueous buffer solution and an organic solution of the phosphinic acid (0.2N) in Norpar 12. The concentration-based distribution ratios increase from 0.11 to 0.46 as the aqueous phase pH increases from 7.18 to 8.15. Regeneration of the organic extractant solution was carried out by stripping at elevated temperatures to remove the ammonia, with 99% recovery of the ammonia being obtained at 125 C.