Cometabolism of CAHs while Growing on BTEX in Soil Slurry

Jun Hui Li; Shan Shan Dong; Ho Jae Shim

doi:10.4028/www.scientific.net/AMR.807-809.1662

Paper Titles

Calculation Method of Natural Leymus chinensis Evapotranspiration under Shallow Groundwater Level Condition
p.1644

Effect of Bromus inermis Leyss Planting on Dynamic Changes of Soil Moisture Contents on the Bare Slope
p.1648

Study on the Models of Water Shortage and its Simulation Analysis
p.1653

Application of Remote Sensing in the Research of Soil Erosion
p.1658

Cometabolism of CAHs while Growing on BTEX in Soil Slurry
p.1662

The Formation of Debris Flow Dams: Geomorphic Setting and Influential Factors
p.1666

Complexity of Groundwater Dynamic in Jiansanjiang Based on Fractal Theory
p.1671

Application of γ Spectra Measurement in the Research of Lake Sediment and Palaeoenvironment
p.1676

Comparative Study of the Blooms in Spring in Xiangxi Bay at Three Gorges Reservoir
p.1682

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Cometabolism of CAHs while Growing on BTEX in Soil Slurry

Abstract:

An indigenous Pseudomonas sp., isolated from the heavily petroleum-contaminated soil and identified as Pseudomonas plecoglossicida, was evaluated for its aerobic cometabolic removal of mixture of two representative chlorinated aliphatic hydrocarbons (CAHs), cis-1,2-dichloroethylene (cis-DCE) and trichloroethylene (TCE), with BTEX/toluene provided as substrate in a laboratory-scale soil slurry. The aerobic simultaneous bioremoval of the cis-DCE/TCE/BTEX mixture was studied under different conditions. Results showed that the increased BTEX concentration from 400 to 600 mg/kg prolonged the bioremoval of BTEX. The cometabolism of cis-DCE and TCE was significantly greater when toluene was provided as growth substrate compared to the BTEX mixture as substrates. Additionally, the bioremoval of toluene in the treatment with toluene as sole growth substrate was higher compared to the treatment with BTEX mixture as substrate. Results would enhance the applicability of bioremediation technology to the mixed wastes-contaminated sites.