A Semi-Continuos Biotreatment Protocol for Chlorinated Ethanes: Application To The Aerospace Industry Aquatic/Industrial Toxicology Lab Institute for Environmental Studies Louisiana State University Baton Rouge, LO

Format:

Conference/Event

Author/Creator:

Portier, Ralph J., author.

Conference Name:

Intersociety Conference on Environmental Systems (1989-07-24 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

A biological treatment process employing immobilized microbial populations was field tested on contaminated ground water having elevated concentrations of volatile organics, primarily ethylene dichloride (EDC), 1, 1 dichloroethane and 1,1,2 trichoroethane. The process, consisting of a 75 L packed bed reactor containing specific adapted microbial strains immobilized on a porous diatomaceous earth support, was operated in a plug flow configuration over a 14 day period in a semi-continuous mode, id est, draw and fill. General process measurements included temperature, pH, and titrated chlorides. Microbial adenosine triphoshate (ATP) measurements provided estimates on immobilized biomass performance. Specific chemical analyses of ground water contaminants consisting of gas chromatography/mass spectroscopy determinations of feed and treated streams provided information biotransformation kinetics and control of stripping actionFeed concentrations of 160 mg/L and 230 mg/L of EDC were effectively mineralized to <1.0 mg/L within a 12-18 h retention time. Data will be presented on minimal stripping rates,<1.0 %, and mechanisms for control.* corresponding author

Notes:

Vendor supplied data

Publisher Number:

891598

Access Restriction:

Restricted for use by site license