Anaerobic Biotechnology

Laboratory Studies - Biostimulation

CONDITIONS

•Electron donors

Ethanol, Lactate, Palmitate Propionate, and CMB

•Electron acceptors

Chlorinated ethenes, Sulfate, and Nitrate

•Groundwater/sediment slurry from contaminated site

• Dehalococcoides ethenogens

were not detected

• c-DCE major product (no ethene)

• All once fed nutrient microcosms

demonstrated sulfate reducing associated

patterns of TCE removal

•Best removal with slow release palmitate

(fatty acid source)

Americhem Facility Source Area

•Microcosm study of Dehalococcoides VOC degradation

TCE Biodegradation in Source Area Microcosms

• Repeated low nutrient, high TCE

• Site H20 with electron donor,

micronutreints over 6 dose events