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Chloroform aerobic cometabolism by butane-utilizing bacteria in bioaugmented and non-bioaugmented soil/groundwater microcosms

Paper ID Volume ID Publish Year Pages File Format Full-Text
35819 45108 2007 11 PDF Available
Title
Chloroform aerobic cometabolism by butane-utilizing bacteria in bioaugmented and non-bioaugmented soil/groundwater microcosms
Abstract

The aerobic cometabolic chloroform (CF) degradation by butane-growing biomasses was investigated in slurry microcosms. The lag-time for the onset of butane utilization by the indigenous biomass of the studied sandy soil was less than 2 weeks in all the experimental conditions tested. The shortest lags were obtained in the absence of CF. The lag-time for the onset of CF depletion was strongly affected by temperature, with no CF degradation after several weeks in the tests conducted at 15 °C. Bioaugmentation treatments performed with two types of butane-utilizing inocula led to a marked decrease of the butane lag-time, even at the smallest concentration of augmented bacteria tested (3.5 × 103 CFU/mLaq. phase). Tests of prolonged CF degradation in the absence of butane were satisfactorily simulated with a Monod-type kinetic model. Estimates of the minimum butane/CF molar ratio required to sustain CF cometabolism varied from 2.0 to 3.1.

Keywords
Chloroform; Butane; Cometabolism; Biodegradation; Bioaugmentation; Kinetic model
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Chloroform aerobic cometabolism by butane-utilizing bacteria in bioaugmented and non-bioaugmented soil/groundwater microcosms
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 8, August 2007, Pages 1218–1228
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us