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Oxygen enhancement of groundwater using an oxygen releasing compound in a funnel-and-gate system

Abstract

ORC is a fine white MgO[sub 2] powder treated with a patented process so that a slow, relatively steady release of oxygen occurs when the powder is in contact with water. Recent work suggests ORC could potentially be used to increase the dissolved oxygen (DO) concentration of ground water, thereby enhancing the biodegradation of dissolved phase contaminants such as benzene and toluene from gasoline spills. Field and laboratory tests were performed to evaluate the oxygen release characteristics of ORC when mixed with filter sand and exposed to groundwater from an aquifer in Ontario. Quasi steady state oxygen release rates of 0.013-0.030 and 0.030 mg O[sub 2]/d per g of ORC were determined from the column and field tests respectively. The column tests indicated that steady state oxygen release conditions from the ORC required ca 90 d after initial contact with water, but field data indicated that oxygen release rate may continue to decrease. Falling head permeameter tests indicated that a maximum drop in hydraulic conductivity occurred within the first 48 h of exposure of ORC to water. Both laboratory and field studies indicated that ORC-contacted water increased in pH. Field studies further suggested an inverse correlation between pH increases and  More>>
Authors:
Publication Date:
Jan 01, 1994
Product Type:
Book
Reference Number:
CANM-94-0E1664; EDB-94-169909
Resource Relation:
Other Information: Thesis (M.Sc.)
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; OXYGEN ENRICHMENT; AQUIFERS; BENCH-SCALE EXPERIMENTS; FIELD TESTS; MAGNESIUM OXIDES; PEROXIDES; WATER POLLUTION CONTROL; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CONTROL; ENRICHMENT; HYDROGEN COMPOUNDS; MAGNESIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLLUTION CONTROL; TESTING; WATER; 540220* - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-)
OSTI ID:
6970583
Research Organizations:
Waterloo Univ., ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ISBN: 0-315-89540-3
Availability:
MF Micromedia Ltd., 240 Catherine Street, Suite 305, Ottawa, Ontario, Canada K2P 2G8 $15 CAN
Submitting Site:
CANM
Size:
Pages: (108 p)
Announcement Date:

Citation Formats

Thomas, D G. Oxygen enhancement of groundwater using an oxygen releasing compound in a funnel-and-gate system. Canada: N. p., 1994. Web.
Thomas, D G. Oxygen enhancement of groundwater using an oxygen releasing compound in a funnel-and-gate system. Canada.
Thomas, D G. 1994. "Oxygen enhancement of groundwater using an oxygen releasing compound in a funnel-and-gate system." Canada.
@misc{etde_6970583,
title = {Oxygen enhancement of groundwater using an oxygen releasing compound in a funnel-and-gate system}
author = {Thomas, D G}
abstractNote = {ORC is a fine white MgO[sub 2] powder treated with a patented process so that a slow, relatively steady release of oxygen occurs when the powder is in contact with water. Recent work suggests ORC could potentially be used to increase the dissolved oxygen (DO) concentration of ground water, thereby enhancing the biodegradation of dissolved phase contaminants such as benzene and toluene from gasoline spills. Field and laboratory tests were performed to evaluate the oxygen release characteristics of ORC when mixed with filter sand and exposed to groundwater from an aquifer in Ontario. Quasi steady state oxygen release rates of 0.013-0.030 and 0.030 mg O[sub 2]/d per g of ORC were determined from the column and field tests respectively. The column tests indicated that steady state oxygen release conditions from the ORC required ca 90 d after initial contact with water, but field data indicated that oxygen release rate may continue to decrease. Falling head permeameter tests indicated that a maximum drop in hydraulic conductivity occurred within the first 48 h of exposure of ORC to water. Both laboratory and field studies indicated that ORC-contacted water increased in pH. Field studies further suggested an inverse correlation between pH increases and the ability of ORC to enhance DO concentration of ground water. The use of ORC in a funnel-and-gate scheme appears to be an effective means of increasing the DO concentration in ground water, thereby stimulating the in-situ bioremediation of many organic contaminants. 30 refs., 17 figs., 12 tabs.}
place = {Canada}
year = {1994}
month = {Jan}
}