The Cloud Phase Extraction Process for the Recovery of Sparingly-soluble Organic Compounds from Waste Aqueous Streams

The Cloud Phase Extraction Process for the Recovery of Sparingly-soluble Organic Compounds from Waste Aqueous Streams PDF Author: Stephen Christian Chadwick
Publisher:
ISBN:
Category :
Languages : en
Pages : 44

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The Cloud Phase Extraction Process for the Recovery of Sparingly-soluble Organic Compounds from Waste Aqueous Streams

The Cloud Phase Extraction Process for the Recovery of Sparingly-soluble Organic Compounds from Waste Aqueous Streams PDF Author: Stephen Christian Chadwick
Publisher:
ISBN:
Category :
Languages : en
Pages : 44

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Book Description


Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada

Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada PDF Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 442

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Encyclopedia of Analytical Science

Encyclopedia of Analytical Science PDF Author:
Publisher: Elsevier
ISBN: 008101984X
Category : Science
Languages : en
Pages : 5142

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Book Description
The third edition of the Encyclopedia of Analytical Science, Ten Volume Set is a definitive collection of articles covering the latest technologies in application areas such as medicine, environmental science, food science and geology. Meticulously organized, clearly written and fully interdisciplinary, the Encyclopedia of Analytical Science, Ten Volume Set provides foundational knowledge across the scope of modern analytical chemistry, linking fundamental topics with the latest methodologies. Articles will cover three broad areas: analytical techniques (e.g., mass spectrometry, liquid chromatography, atomic spectrometry); areas of application (e.g., forensic, environmental and clinical); and analytes (e.g., arsenic, nucleic acids and polycyclic aromatic hydrocarbons), providing a one-stop resource for analytical scientists. Offers readers a one-stop resource with access to information across the entire scope of modern analytical science Presents articles split into three broad areas: analytical techniques, areas of application and and analytes, creating an ideal resource for students, researchers and professionals Provides concise and accessible information that is ideal for non-specialists and readers from undergraduate levels and higher

Solid Phase Extraction: State of the Art and Future Perspectives

Solid Phase Extraction: State of the Art and Future Perspectives PDF Author: Victoria Samanidou
Publisher: MDPI
ISBN: 3039211587
Category : Science
Languages : en
Pages : 176

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Book Description
This book is a collection of 13 innovative papers describing the state of the art and the future perspectives in solid-phase extraction covering several analytical fields prior to the use of gas or liquid chromatographic analysis. New sorptive materials are presented including carbon nanohorn suprastructures on paper support, melamine sponge functionalized with urea–formaldehyde co-oligomers, chiral metal–organic frameworks, UiO-66-based metal–organic frameworks, and fabric phase sorptive media for various applications. Solid-phase extraction can be applied in several formats aside from the conventional cartridges or mini-column approach, e.g., online solid-phase extraction, dispersive solid-phase microextraction, and in-syringe micro-solid-phase extraction can be very helpful for analyte pre-concentration and sample clean-up. Polycyclic musks in aqueous samples, 8-Nitroguanine in DNA by chemical derivatization antibacterial diterpenes from the roots of salvia prattii, perfluoroalkyl substances (PFASs) in aater samples by bamboo charcoal-based SPE, parabens in environmental water samples, benzotriazoles as environmental pollutants, organochlorine pesticide residues in various fruit juices and water samples and synthetic peptide purification are among the applications cited in this collection. All these outstanding contributions highlight the necessity of this analytical step, present the advantages and disadvantages of each method and focus on the green analytical chemistry guidelines that have to be fulfilled in current analytical practices.

Cloud Point Extraction and Preconcentration Procedures for Organic and Related Pollutants of State Concern

Cloud Point Extraction and Preconcentration Procedures for Organic and Related Pollutants of State Concern PDF Author: Willie L. Hinze
Publisher:
ISBN:
Category : Analytical chemistry
Languages : en
Pages : 96

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Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids Or Ammonia from Aqueous Solutions

Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids Or Ammonia from Aqueous Solutions PDF Author: Loree Joanne Poole
Publisher:
ISBN:
Category :
Languages : en
Pages : 568

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Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids Or Ammonia from Aqueous Solutions Part II. Recovery of Ammonia from Sour Waters

Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids Or Ammonia from Aqueous Solutions Part II. Recovery of Ammonia from Sour Waters PDF 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.

Liquid-Phase Extraction

Liquid-Phase Extraction PDF Author: Colin F. Poole
Publisher: Elsevier
ISBN: 0128169125
Category : Science
Languages : en
Pages : 818

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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

Liquid-liquid Extraction

Liquid-liquid Extraction PDF Author: Ruth Blumberg
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 216

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Extraction Methods in Organic Analysis

Extraction Methods in Organic Analysis PDF Author: Alan John Handley
Publisher: Blackwell
ISBN:
Category : Science
Languages : en
Pages : 328

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Book Description
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.