Enhanced remediation of aqueous compositions contaminated with h

Details Enhanced remediation of aqueous compositions contaminated with h Enhanced remediation of aqueous compositions contaminated with h

1994-03-25

1994-11-08

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

210908, 210909, 588206, C02F 170

Patent

active

053624025

ABSTRACT:
A process for significantly improving the rate of dehalogenation of aqueous compositions contaminated with halogenated hydrocarbon compounds is disclosed. The process involves admixing the contaminated aqueous composition with metallic iron in the presence of citric acid both in-situ and ex-situ. The use of citric acid as an additive in the reaction substantially increases the rate of iron-induced dechlorination of chlorinated hydrocarbons, such as trichloroethylene.

REFERENCES:
patent: 4382865 (1983-05-01), Sweeny
patent: 4416767 (1983-11-01), Jordan
patent: 4758346 (1988-07-01), Johnson
patent: 5051030 (1991-09-01), Saha et al.
patent: 5093011 (1992-03-01), Friedman et al.
patent: 5096600 (1992-03-01), Hoch
patent: 5273657 (1993-12-01), Nakashima et al.

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