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Title: Biological removal of organic constituents in high-Btu coal gasification wastewaters

Abstract

Studies have been initiated to assess the efficiency of activated sludge treatment for removal of organic contaminants from coal gasification process effluents. Samples of pilot plant raw gas quench wastewater were obtained from the Institute of Gas Technology's HYGAS process and from the Grand Forks Energy Technology Center (GFETC) slagging fixed-bed process. These wastewaters were subjected to long term biological treatability studies, followed by detailed characterization of organic constituents. The samples were extracted using a methylene chloride pH-fractionation method to neutral, acidic, and basic fractions for analysis by capillary column gas chromotography/mass spectrometry. Influent acid extract samples of both HYGAS and GFETC wastewaters showed that nearly 99% of the total extractable and chromatographable organic material was comprised of phenol and alkylated phenols. Activated sludge treatment removed these compounds almost completely. Influent base extracts of HYGAS and GFETC samples showed alkylated pyridines, anilines, and quinolines; the GFETC sample also showed, as major components, aminopyrroles, imidazoles and/or pyrazoles, and diazines. Removal efficiency of these compounds was generally good, with the exception of certain alkylated pyridines. The influent neutral fractions of both the HYGAS and GFETC samples were comprised of cycloalkanes, cycloalkenes, naphthalene, indole, acetophenone, and benzonitrile. Alkylated benzenes, abundant in the HYGASmore » sample, were generally absent in the GFETC sample. Removal efficiencies for certain alkylated benzenes, polycyclic aromatic hydrocarbons, and cycloalkanes and cycloalkenes were poor, especially at low influent concentrations.« less

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA); Carnegie-Mellon Univ., Pittsburgh, PA (USA). Dept. of Civil Engineering
OSTI Identifier:
6494615
Report Number(s):
CONF-8006171-1
ON: DE81023574
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: International conference on water pollution research, Toronto, Canada, 23 Jun 1980
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; ACTIVATED SLUDGE PROCESS; COAL GASIFICATION; WASTE WATER; ORGANIC COMPOUNDS; REMOVAL; ANILINE; AROMATICS; BIOCONVERSION; CYCLOALKANES; CYCLOALKENES; EFFICIENCY; EXPERIMENTAL DATA; HIGH BTU GAS; HYGAS PROCESS; IMIDAZOLES; NAPHTHALENE; PHENOLS; POLYCYCLIC AROMATIC HYDROCARBONS; PYRAZOLES; PYRIDINES; QUINOLINES; SYNTHESIS; WATER TREATMENT; ALKANES; ALKENES; AMINES; AZINES; AZOLES; CONDENSED AROMATICS; DATA; FLUIDS; FUEL GAS; FUELS; GAS FUELS; GASES; GASIFICATION; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INFORMATION; LIQUID WASTES; MANAGEMENT; NUMERICAL DATA; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PROCESSING; SNG PROCESSES; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER; 010800* - Coal, Lignite, & Peat- Waste Management; 520200 - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989); 010404 - Coal, Lignite, & Peat- Gasification

Citation Formats

Stamoudis, V C, and Luthy, R G. Biological removal of organic constituents in high-Btu coal gasification wastewaters. United States: N. p., 1980. Web.
Stamoudis, V C, & Luthy, R G. Biological removal of organic constituents in high-Btu coal gasification wastewaters. United States.
Stamoudis, V C, and Luthy, R G. 1980. "Biological removal of organic constituents in high-Btu coal gasification wastewaters". United States.
@article{osti_6494615,
title = {Biological removal of organic constituents in high-Btu coal gasification wastewaters},
author = {Stamoudis, V C and Luthy, R G},
abstractNote = {Studies have been initiated to assess the efficiency of activated sludge treatment for removal of organic contaminants from coal gasification process effluents. Samples of pilot plant raw gas quench wastewater were obtained from the Institute of Gas Technology's HYGAS process and from the Grand Forks Energy Technology Center (GFETC) slagging fixed-bed process. These wastewaters were subjected to long term biological treatability studies, followed by detailed characterization of organic constituents. The samples were extracted using a methylene chloride pH-fractionation method to neutral, acidic, and basic fractions for analysis by capillary column gas chromotography/mass spectrometry. Influent acid extract samples of both HYGAS and GFETC wastewaters showed that nearly 99% of the total extractable and chromatographable organic material was comprised of phenol and alkylated phenols. Activated sludge treatment removed these compounds almost completely. Influent base extracts of HYGAS and GFETC samples showed alkylated pyridines, anilines, and quinolines; the GFETC sample also showed, as major components, aminopyrroles, imidazoles and/or pyrazoles, and diazines. Removal efficiency of these compounds was generally good, with the exception of certain alkylated pyridines. The influent neutral fractions of both the HYGAS and GFETC samples were comprised of cycloalkanes, cycloalkenes, naphthalene, indole, acetophenone, and benzonitrile. Alkylated benzenes, abundant in the HYGAS sample, were generally absent in the GFETC sample. Removal efficiencies for certain alkylated benzenes, polycyclic aromatic hydrocarbons, and cycloalkanes and cycloalkenes were poor, especially at low influent concentrations.},
doi = {},
url = {https://www.osti.gov/biblio/6494615}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}

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