Thomas R Stolzenburg

US Patent:

20020022756, Feb 21, 2002

Filed:

Apr 10, 2001

Appl. No.:

09/832078

Inventors:

Ajit Chowdhury - Madison WI, US
Thomas Stolzenburg - Madison WI, US

International Classification:

A62D003/00

US Classification:

588/015000, 588/223000

Abstract:

A method for reducing leaching and bioaccessibility of a heavy metal from particulate matter includes the steps of treating the particulate matter with phosphate, chloride and iron additives; wetting the additive-containing particulate matter with water; and incubating the particulate matter at a temperature above ambient temperature for a time sufficient to achieve the goals of the invention.

US Patent:

59941219, Nov 30, 1999

Filed:

Apr 27, 1998

Appl. No.:

9/067178

Inventors:

Thomas R. Stolzenburg - Madison WI
Marianne D. Duner - Madison WI

Assignee:

RMT, Inc. - Madison WI

International Classification:

B09B 300

US Classification:

4352625

Abstract:

A method for treating a recalcitrant organic contaminant in contaminated soil or waste includes the steps of (1) maintaining indigenous bacteria or microbes in the contaminated soil or waste at a population level below which the indigenous bacteria or microbes are able to interfere with the enzyme while the enzyme acts against the contaminant and (2) exposing the contaminated soil or waste to an enzyme for a time sufficient to decrease the amount of the recalcitrant organic contaminant in the soil or waste. If the soil or waste also includes one or more readily degradable organic chemical, the method can include the additional step of reducing the content of the readily degradable organic chemical in the soil or waste.