Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2004-08-31
2008-11-11
Barry, Chester T. (Department: 1797)
Liquid purification or separation
Processes
Treatment by living organism
C210S757000, C435S262500
Reexamination Certificate
active
07449114
ABSTRACT:
Methods for enhancing bioremediation of ground water contaminated with nonaqueous halogenated solvents are disclosed. An illustrative method includes adding an electron donor for microbe-mediated anaerobic reductive dehalogenation of the halogenated solvents, which electron donor enhances mass transfer of the halogenated solvents from residual source areas into the aqueous phase of the ground water. Illustrative electron donors include C2-C4carboxylic acids and hydroxy acids, salts thereof, esters of C2-C4carboxylic acids and hydroxy acids, and mixtures thereof, of which lactic acid, salts of lactic acid—such as sodium lactate, lactate esters, and mixtures thereof are particularly illustrative. The microbes are either indigenous to the ground water, or such microbes can be added to the ground water in addition to the electron donor.
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Barry Chester T.
Clayton Howarth & Cannon, P.C.
SRP Technologies, Inc.
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