This technology is available from Temarex Corporation.

BIOREMEDIATION OF CONTAMINATED SOIL

Title:BIOREMEDIATION OF POLYCYCLIC AROMATIC HYDROCARBON CONTAMINATED SOIL

Inventor(s):S. Lee, T. Cutright

Disclosure 229 U.S. Patent 5,427,944 Disclosure 229-CIP U.S. Patent 5,508,194

This novel bioremediation process utilizes a mixed bacteria culture of Achromobacter sp. and Mycobacterium sp. which has been found to be especially efficient for effecting rapid biodegradation polycyclic aromatic hydrocarbon (PAH) contaminants.

The mixed bacteria culture can be utilized for in situ or ex situ bioremediation of contaminated soil, or in any of various conventional bioreactors to treat contaminated liquids such as landfill leachates, groundwater or industrial effluents.In addition, the mixed bacteria culture can be used in combination with other commonly used microorganisms to remove or biodegrade hazardous contaminants other than PAHs which are/or might be present in soil, groundwater, or other material being remediated.

One of the key features of the invention is that the bacteria, the nutrients used to sustain growth of the bacteria, and the products of the biodegration of the polycyclic aromatic or other hydrocarbons are all substantially harmless to the environment. The mixed bacteria culture provides an environmentally safe and inexpensive means for rapidly and effectively eliminating a variety of PAH contaminants from the environment.