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Title: Water quality monitoring at the Hoe Creek test site: review and preliminary conclusions

Post-burn monitoring of the ground water near to the Hoe creek underground coal gasification site showed that a broad range of gasification products had been introduced into the water system. Although many of these contaminants were eventually absorbed by the surrounding coal, some chemicals continued to appear in the water in concentrations higher than pre-test levels for several years after gasification. Possible mechanisms by which the contaminants entered the ground water include: (1) leakage of pyrolysis products; (2) post-burn leaching of coal ash and overburden rubble by returning ground water; and (3) dissolution of minerals outside the cavity by the CO/SUB/2 generated during gasification.
Authors:
Publication Date:
OSTI Identifier:
6843735
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIChE Symp. Ser.; (United States); Journal Volume: 79:226
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; GROUND WATER; MONITORING; WATER POLLUTION; IN-SITU GASIFICATION; ENVIRONMENTAL EFFECTS; ASHES; CHEMICAL EFFLUENTS; COAL GASIFICATION; CONTAMINATION; DISSOLUTION; LEACHING; LEAKS; PYROLYSIS PRODUCTS; WATER QUALITY; ENVIRONMENTAL QUALITY; GASIFICATION; HYDROGEN COMPOUNDS; IN-SITU PROCESSING; OXYGEN COMPOUNDS; POLLUTION; PROCESSING; RESIDUES; SEPARATION PROCESSES; THERMOCHEMICAL PROCESSES; WATER 010900* -- Coal, Lignite, & Peat-- Environmental Aspects; 010404 -- Coal, Lignite, & Peat-- Gasification; 520200 -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)