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Wednesday, July 15, 2020 | History

2 edition of Supercritical fluid extraction of particulate and adsorbent materials found in the catalog.

Supercritical fluid extraction of particulate and adsorbent materials

Bob W Wright

Supercritical fluid extraction of particulate and adsorbent materials

by Bob W Wright

  • 108 Want to read
  • 23 Currently reading

Published by U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory in Research Triangle Park, NC .
Written in English

    Subjects:
  • Solvent extraction,
  • Air -- Purification

  • Edition Notes

    StatementBob W. Wright and Richard D. Smith
    ContributionsSmith, Richard D. 1949-, Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.)
    The Physical Object
    Pagination3 p. :
    ID Numbers
    Open LibraryOL14891891M

    Supercritical fluid extraction (SFE) was an epidemic issue during s, so that some articles named it magic (Fjeldsted and Lee ). A liquid or a gas becomes supercritical fluid if the temperature and pressure increase above their critical point (Guiochon and Tarafder ). Trace quantities of airborne herbicide residues were collected on adsorbent bed cartridges and were subsequently extracted from the adsorbent using supercritical carbon dioxide. An apparatus was constructed to facilitate the extraction and recovery of the desired analytes. The resulting extracts.

    Supercritical fluid extraction: Present status and prospects. Supercritical extraction (SFE), using primarily environmentally-benign carbon dioxide (CO2) as the extracting agent, is reviewed with respect to its present status and future use. SFE was developed for analytical application in the mid.   Clear, Practical Coverage of an Important Reemerging Technology Supercritical Fluid Extraction provides a clear, practical, step-by-step introduction to a sample preparation method that helps laboratories reduce or eliminate the use of halogenated solvents, extract samples more quickly and efficiently, and improve the accuracy of their s: 1.

    Supercritical fluid extraction of particulate and adsorbent materials [] Wright, Bob W. Research Triangle Park, NC: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, []. The present invention provides improvements in supercritical fluid extraction of particulate egg substrates by forming the substrate into porous solid particles characterized by a number weighted mean particle size ranging from about millimeters to about 3 millimeters and by a tapped bulk density of from about to about grams per milliliter prior to subjecting the substrate to.


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Supercritical fluid extraction of particulate and adsorbent materials by Bob W Wright Download PDF EPUB FB2

United States Environmental Protection Agency Environmental Monitoring Systems Laboratory Research Triangle Park NC Research and Development EPA//S/ Jan. Project Summary Supercritical Fluid Extraction of Paniculate and Adsorbent Materials: Part II Bob W.

Wright and Richard D. Smith Supercritical fluids have solvent strengths similar to those of liquids, but have. Get this from a library.

Supercritical fluid extraction of particulate and adsorbent materials. [Bob W Wright; Richard D Smith; Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.)]. The complete report, entitled "Supercritical Fluid Extraction of Paniculate and Adsorbent Materials," (Order No.

PB /AS; Cost: $, subject to change) will be available only from: National Technical Information Service Port Royal Road Springfield, VA Telephone: The EPA Project Officer can be contacted at.

Supercritical fluid extraction / capillary supercritical fluid chromatography / Fourier transform infrared microspectrometry of polycyclic aromatic compounds in a coal tar pitch.

Journal of High Resolution Chromatography11 (11), DOI: /jhrcCited by:   Single stage supercritical fluid extraction (SCFE) The extraction of valuable materials from solid substrates by means of SCFs has been carried out on a commercial scale for more than two decades.

Large-scale processes are related to the food industry like the decaffeination of coffee beans and black tea leaves and the extraction of bitter Cited by: The aim of this book is to highlight the utilization of algae for the development of useful products using environmentally friendly technologies such as supercritical fluid extraction (SFE) and.

Supercritical fluid extraction was found to be useful for water analysis when it was coupled with batch-wise adsorption.

Indeed, the results of this study revealed that the pesticides were adsorbed onto the particulate adsorbents very simply using only a stirrer in a small beaker.

Analytical supercritical fluid extraction of adsorbent materials. Analytical Chemistry59 (1), DOI: /aca Supercritical fluid extraction from vegetable materials. Reviews in Chemical Engineering27, DOI: /REVCE Andreas Sjödin. Determination of 43 polycyclic aromatic hydrocarbons in air particulate matter by use of direct elution and isotope dilution gas chromatography/mass spectrometry.

Supercritical fluid. Understanding supercritical gas adsorption in porous carbons requires consistency between experimental measurements at representative conditions and t. Several processes, including solvent extraction (Zhao et al., ), absorption filtration (Dreher et al., ), and potentially supercritical fluid extraction (SCFE) (Dufresne and Agrawal, ), can be utilized to purify waxes and remove the colored species.

In solvent extraction, an aqueous solution containing impurity ions is mixed with an. The possibility and feasibility of using supercritical fluid СО2 extraction process have been investigated and described in the book as part of the task of spent catalysts regeneration.

The analysis of deactivating compounds has been carried out for industrial catalysts such as: 1) palladium catalyst GE of ethane-ethylene fraction hydrogenation; 2) nickel/kieselguhr catalyst of process of.

A novel magnetite adsorbent modified with copper and diphenylthiocarbazone was synthesized and used as a sorbent for magnetic solid phase extraction (MSPE) of two opium alkaloids: papaverine and noscapine. Supercritical fluid extraction (SFE) was used to.

NEXT BOOK; VIEW ALL BOOKS ALL BOOKS; Supercritical Fluid Extraction and Chromatography Techniques and Applications. Editor(s): Bonnie A. Charpentier 1; Supercritical Fluid—Adsorbate—Adsorbent Systems Characterization and Utilization in Vegetable Oil Extraction Studies. Jerry W. King. Supercritical Fluid Extraction is a technique in which CO2 is used under extremely high pressure to separate solutions.

Separations is basic to all process industries & supercritical fluid extraction is a specific type which is receiving a high level of attention, The book will combine basic fundamentals with industrial applications. Other Supercritical Fluids. In addition to CO 2, other supercritical solvents have been evaluated for agronomic are some reports about the choice of nitrous oxide (N 2 O) as an extraction fluid.

The chemical properties of this fluid make N 2 O more suited for the extraction of polar compounds. However, in the presence of a high organic content, the gas can cause violent.

Padma Ishwarya, P. Nisha, in Reference Module in Food Science, Abstract. Supercritical fluid extraction (SFE) is a continuously evolving green technology for the separation of bioactive constituents from natural materials.

Currently, SFE is a well-received alternative to solvent-based extraction. Christoph Lütge, Ingo Reiβ, Armin Schleuβinger, Siegfried Schulz, Modeling the extraction of perylene from spiked soil material by dense carbon dioxide, The Journal of Supercritical Fluids, /(94), 7, 4, (), ().

The use of supercritical fluids for the analytical extraction of semivolatile and higher molecular weight materials from various adsorbent and particulate matrices was investigated. Instrumentation was designed to allow gram quantities of the matrix to be extracted at pressures up to bar and temperatures to /sup 0/C with collection of.

Supercritical Fluid Extraction is a technique in which CO2 is used under extremely high pressure to separate solution (e.g., removing caffeine from coffee). Separations is basic to all process industries and supercritical fluid extraction is a specific type which is receiving a high level of attention.

Extraction and Fractionation of Natural Organic Compounds from Plant Materials with Supercritical Carbon Dioxide Vom Promotionsausschuss der Technischen Universität Hamburg-Harburg zur Erlangung des akademischen Grades Doktor-Ingenieur genehmigte Dissertation von Leandro Danielski aus Chapecó Brasilien 1.Supercritical fluid extraction (SFE) of plant material with solvents like CO2, propane, butane, or ethylene is a topic of growing interest.

SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids the use of toxic solvents. Although today SFE is mainly used for decaffeination of coffee and tea as well as production of hop extracts on a.Can Erkey, Thermodynamics and Dynamics of Adsorption of Metal Complexes on Surfaces from Supercritical Solutions, Supercritical Fluids and Organometallic Compounds - From Recovery of Trace Metals to Synthesis of Nanostructured Materials, /B, (), ().