Arokiasamy J Francis

8158399, Apr 17, 2012

Mar 12, 2008

12/046707

Devicharan Chidambaram - Middle Island NY, US
Arokiasamy J. Francis - Middle Island NY, US

Brookhaven Science Associates, LLC - Upton NY

C12P 1/04

435170, 435 41, 4352527, 435262, 4352625, 435264, 435281

A method for processing environmental or industrial samples to remove, reclaim or otherwise reduce the level of chemical species present in the sample that act as redox active species. The redox active species is kept in a waste chamber and is separated from an aqueous bacterial culture that is held in a culture chamber. The waste chamber and the culture chamber are separated by a porous membrane through which electron transfer can occur but through which the aqueous bacterial culture cannot pass. The redox active species substantially remains in the waste chamber and is in non-contact with the aqueous bacterial culture during the process of removal, reduction or reclamation.

50471520, Sep 10, 1991

Nov 5, 1990

7/608829

Arokiasamy J. Francis - Middle Island NY
Cleveland J. Dodge - Wading River NY
Jeffrey B. Gillow - Valley Cottage NY

Associated Universities, Inc. - Washington DC

C02F 334

210611

A process is provided to treat wastes containing radionuclides and toxic metals with Clostridium sp. BFGl to release a large fraction of the waste solids into solutin and convert the radionuclides and toxic metals to a more concentrated and stable form with concurrent volume and mass reduction. The radionuclides and toxic metals being in a more stable form are available for recovery, recycling and disposal.

52924564, Mar 8, 1994

Mar 20, 1992

7/855096

Arokiasamy J. Francis - Middle Island NY
Cleveland J. Dodge - Wading River NY

Associated Universities, Inc. - Washington DC

G21F 916

252628

A method for decontaminating radionuclides and other toxic metal-contaminate The U. S. government has certain rights in this invention pursuant to Contract Number DE-AC02-76CH00016 between the U. S. Department of Energy and Associated Universities, Inc.

53546881, Oct 11, 1994

Apr 16, 1992

7/869397

Arokiasamy J. Francis - Middle Island NY
Cleveland J. Dodge - Wading River NY

Associated Universities, Inc. - Washington DC

C12P 300
C12N 120
A61L 901
B09B 300

435262

A process is provided for solubilizing coprecipitated metals. Metals in wastestreams are concentrated by treatment with an iron oxide coprecipitating agent. The coprecipitated metals are solubilized by contacting the coprecipitate with a bacterial culture of a Clostridium species ATCC 53464. The remobilized metals can then be recovered and recycled.

47583452, Jul 19, 1988

Apr 16, 1987

7/039131

Arokiasamy J. Francis - Middle Island NY
Cleveland Dodge - Wading River NY
Krishnachetty Chendrayan - Coimbatore Tamil Nadu, IN
Helen L. Quinby - Cambridge MD

The United States of America as represented by the United States
Department of Energy - Washington DC

C02F 334
C12P 752
C12P 754
C12P 756

210611

The present invention relates to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rate of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3. 32. mu. moles of lead as lead oxide was 0. 042. mu. moles ml. sup. -1 hr. sup. -1. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids.