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Author: John F. Scamehorn Publisher: ISBN: Category : Medical Languages : en Pages : 480
Book Description
Because they are biodegradable and work well in low energy separations, surfactants are an active area of interest in separations science. This book covers surfactant-based separations for the chemical and biochemical process industries and analytical chemistry. It includes discussion of widely used processes and novel techniques, such as, surfactant-enhanced ultrafiltration, ground water and soil remediation, surfactant absorption and flotation processes, extraction processes, recycling of paper and plastics using surfactant, and analytical separations using surfactants.
Author: John F. Scamehorn Publisher: ISBN: Category : Medical Languages : en Pages : 480
Book Description
Because they are biodegradable and work well in low energy separations, surfactants are an active area of interest in separations science. This book covers surfactant-based separations for the chemical and biochemical process industries and analytical chemistry. It includes discussion of widely used processes and novel techniques, such as, surfactant-enhanced ultrafiltration, ground water and soil remediation, surfactant absorption and flotation processes, extraction processes, recycling of paper and plastics using surfactant, and analytical separations using surfactants.
Author: John F. Scamehorn Publisher: CRC Press ISBN: 1000103749 Category : Science Languages : en Pages : 359
Book Description
Complete with bibliographic citations and illustrations, this volume focuses on novel techniques and reviews established methods for surfactant-based separation processes that can be widely applied in industry. Describes new extraction techniques, and introduces micellar-enhanced ultrafiltration and admicellar chromatography, discusses protein extraction using reverse micelles, surfactant-enhanced carbon regeneration, and demonstrates new methods of turning waste streams containing dilute concentrations of valuable materials into product streams and examines such traditional surfactant-based methods as froth flotation and foam fractionation.
Author: Scamehorn Publisher: CRC Press ISBN: 9780824779290 Category : Science Languages : en Pages : 360
Book Description
Focuses on novel techniques and reviews established methods for surfactant-based separation processes that can be widely applied in industry. Describes new extraction techniques, micellar-enhanced ultrafiltration and admicellar chromatography, protein extraction using reverse micelles, surfactant-en
Author: John F. Scamehorn Publisher: CRC Press ISBN: 1000147177 Category : Science Languages : en Pages : 362
Book Description
Focuses on novel techniques and reviews established methods for surfactant-based separation processes that can be widely applied in industry. Describes new extraction techniques, micellar-enhanced ultrafiltration and admicellar chromatography, protein extraction using reverse micelles, surfactant-en
Author: Colin F. Poole Publisher: Elsevier ISBN: 0128169125 Category : Science Languages : en Pages : 818
Book Description
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
Author: Darsh T. Wasan Publisher: Routledge ISBN: 1351412523 Category : Science Languages : en Pages : 572
Book Description
The first reference to link chemical engineering technologies and surfactant science in suchbreadth of focus, Surfactants in Chemical/Process Engineering features contributionsby major authorities in chemical engineering whose applications have opened important newfields for surfactant use. These applications include dispersion science, separation processes, oilrecovery, microemulsions, and environmental control.This volume discusses ultrafiltration processes, flotation, metal extractions, and more ...examines surfactants in process streams for such industrial separations as micellar-enhancedultrafiltration, adsorbent regeneration, micellar extractions, and oiVwater demulsification . ..describes methodologies for separations of fatty acids, metals, minerals and impurities,solvents, and hydrocarbons for cost-saving industrial and consumer product manufacture . . .details techniques for developing and optimizing formulations for superior agricultural plantcontrol or enhancement systems, micro- and macroemulsions, and liquid surfactant membranes... and looks closely at emulsion polymers in soil stabilizations, protective coatings, sealants,adhesives, textile processing, paper finishing, specialty concretes, and tire manufacture.
Author: Bidyut K. Paul Publisher: John Wiley & Sons ISBN: 1118834194 Category : Science Languages : en Pages : 578
Book Description
This volume will be summarized on the basis of the topics of Ionic Liquids in the form of chapters and sections. It would be emphasized on the synthesis of ILs of different types, and stabilization of amphiphilic self-assemblies in conventional and newly developed ILs to reveal formulation, physicochemical properties, microstructures, internal dynamics, thermodynamics as well as new possible applications. It covers: Topics of ionic liquid assisted micelles and microemulsions in relation to their fundamental characteristics and theories Development bio-ionic liquids or greener, environment-friendly solvents, and manifold interesting and promising applications of ionic liquid based micelles and micremulsions
Author: Robert Lemlich Publisher: Elsevier ISBN: 0323154816 Category : Technology & Engineering Languages : en Pages : 349
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: Mahmoud F. M. Bahnasy Publisher: ISBN: Category : Capillary electrophoresis Languages : en Pages : 221
Book Description
Capillary electrophoresis (CE) is a fast and high efficiency separation technique based on the differential migration of charged species in an electric field. CE is useful for the separation of a wide range of analytes from small ions to large biomolecules. However, CE separations of proteins are challenging due to the adsorption of protein onto the capillary silica surface. Capillary coatings are the most common way to minimize this adsorption. This thesis focuses on the use of two-tailed cationic surfactant based coatings as means of preventing protein adsorption. Factors affecting the stability of two-tailed cationic surfactant coatings have been investigated. The impact of small i.d. capillaries (5-25) μm on enhanced stability of surfactant bilayer cationic coatings and on the efficiency of separation of basic proteins was studied. Using a dioctadecyldimethylammonium bromide (DODAB) coated 5 μm i.d. capillary, exceptional short term stability (210 consecutive runs) and long term stability (300 runs over a 30 day period) were achieved. The average separation efficiency of four basic model proteins was 1.4-2 millions plates/m. DODAB coatings were stable over a pH range of 3-8 as demonstrated by strong anodic magnitude of electroosmotic flow (EOF) and good EOF reproducibility. Surprisingly, at pH ≥ 9, EOF became less anodic and even became suppressed cathodic. The reason is unclear. Chemical degradation of DODAB at high pH was excluded. Increased vesicle size at high pH and/or accelerated desorption may be involved. A surfactant bilayer/diblock copolymer coating was developed to tune the EOF and prevent protein adsorption. The coating consisted of a DODAB bilayer which served as a strong anchor to the capillary wall and polyoxyethylene (POE) stearate to suppress the EOF. The coating has been applied successfully to the capillary zone electrophoretic separation of basic, acidic and histone proteins, and to capillary isoelectric focusing. The ability to tune the EOF enabled both single-step capillary isoelectric focusing (cIEF) and two-step cIEF to be performed. A strongly suppressed EOF coating provided a linear pH gradient and allowed for the separation of two hemoglobin variants HbA and HbS. Factors affecting the stability and EOF of the developed surfactant bilayer/diblock copolymer coating were studied. The magnitude of the anodic EOF can be tuned by varying the hydrophilic block POE chain length. The hydrophobic block of the diblock copolymer accounts for stability of the coating, with a longer (stearate) block giving the best stability. The sequential coating provided a stable and suppressed EOF over a broad range of pH 3.0-11.5. The EOF was suppressed and anodic at low pH. As the pH increases, the EOF was still suppressed but became cathodic. This reversal in EOF of the sequential coating is consistent with the reported applications of the sequential coating, and the behavior of the underlying DODAB bilayer. The sequential coating shows a good stability in buffers containing up to 20% v/v acetonitrile.
Author: John F. Scamehorn
Author: John F. Scamehorn
Author: John F. Scamehorn
Author: Scamehorn
Author: John F. Scamehorn
Author: Colin F. Poole
Author: Craig Rosslee
Author: Darsh T. Wasan
Author: Bidyut K. Paul
Author: Robert Lemlich
Author: Mahmoud F. M. Bahnasy