Shell Oil Comapny

International Minerals & Chemical Corp.

Joseph Patrick Salanitro

Paul C Johnson

James Henry Miller

Stephen Merle Stearns

Paul Michael Maner

Gerard Eugene Spinnler

Kurt G Sundelin

Susan Stackhouse

Dallas Lea Byers

Charles Lee Meyer

Paul Ta-chin Sun

Ananda M Chatterjee

James S Hokanson

A method and apparatus for the in situ purification of aquifers contaminated with ethers and/or alcohols using a bacterial culture, a method of delivering the culture to the subsurface, and an oxygen delivery system.

In situ method and apparatus for biodegradation of alkyl ethers and tertiary butyl alcohol

Method and apparatus for biodegradation of oxygenates

Situ method and apparatus for biodegradation of alkyl ethers and tertiary butyl alcohol

Disclosed is a method for treating groundwater, or other water streams contaminated with oxygenate(s), particularly MTBE and TBA, characterized by improved biodegradation of MTBE, the biodegradation of TBA, and reduced frequency of the need to change the carbon bed, which comprises inoculating a biodegrader capable of degrading said oxygenate on an activated carbon bed through a rigid tubular instrument having a plurality of holes around the circumference of the end used for inoculation of the carbon bed by a method that optimizes dispersion and colonization; and flowing said groundwater, or other water stream contaminated with said oxygenate through a structure having a top, bottom and sides and a predetermined volume containing said bed of activated carbon having said biodegrader inoculated thereon. The invention is also an apparatus for biodegradation of oxygenate(s).

Method and apparatus for biodegradation of alkyl ethers and tertiary butyl alcohol

A biologically pure bacterial culture has been isolated by a dilution enrichment process from a mixed bacterial culture, obtained by the enrichment of an activated sludge taken from a biotreater for treating wastewater in a Chemical plant. The mixed bacterial culture is capable of degrading aerobically a branched alkyl ether or a branched alkyl alcohol, particularly a tertiary carbon atom-containing alkyl ether or alkyl alcohol, more particularly MTBE or t-butyl alcohol, to CO . The biologically pure bacterial culture is capable of cleaving the ether linkage of methyl t-butyl ether (MTBE) with the transient formation of t-butyl alcohol (TBA) which is subsequently degraded completely to CO .

Bacterial culture which degrades methyl-tert-butyl ether to carbon dioxide

A bacterial culture capable of degrading ethers, especially branched alkylethers including MTBE, under aerobic conditions has been prepared.

Biodegradation of ethers using a bacterial culture

An isolated mixed bacterial culture, preferably BC-1, ATCC No. 202057, which degrades ethers, especially branched alkylethers including MTBE, under aerobic conditions has been prepared.

Biodegradation of ethers using an isolated mixed bacterial culture

A process for the aerobic degradation of t-butyl alcohol using a mixed bacterial culture prepared from an enrichment process using an ether containing a t-butyl moiety and an activated sludge retrieved from a biotreater for treating wastewater from a chemical plant.

Microbial degradation of tertiary butyl alcohol

Blends of polypropylene, poly(3-hydroxybutyrate) or poly(3-hydroxybutyrate-3-hydroxyvalerate) and metal stearates are both photodegradable and biodegradable.

Environmentally degradable polymer composition

Novel substituted 2,3-diphenyl-1,2-dihydroquinoxalines are useful for promoting growth and improving feed conversion efficiencies in meat-producing animals. In addition, the novel compounds are useful for controlling coccidiosis in poultry.

Substituted 2,3-diphenyl-1,2-dihydroquinoxalines

A tubular connected series of biofilm samplers is provided for monitoring biofouling by microorganisms in a continuous flow stream. Tubular bypasses are provided around each sampler, so that each sampler is removable for inspection of biofouling without interruption of the continuous flow stream. In addition, each sampler has a contoured surface which is in contact with the continuous flow stream and which is flush with the inner surface of the tubulars connecting the samplers.

Growing community of inventors

Houston, TX, United States of America

Joseph Patrick Salanitro