SHANG HaiTao; YANG Qi; ZHANG Yang

doi:10.3967/0895-3988.2011.03.009

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

文章导航 > Biomedical and Environmental Sciences > 2011 > 24(3): 261-267

SHANG HaiTao, YANG Qi, ZHANG Yang. Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria[J]. Biomedical and Environmental Sciences, 2011, 24(3): 261-267. doi: 10.3967/0895-3988.2011.03.009

Citation:

SHANG HaiTao, YANG Qi, ZHANG Yang. Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria[J]. Biomedical and Environmental Sciences, 2011, 24(3): 261-267. doi: 10.3967/0895-3988.2011.03.009

doi: 10.3967/0895-3988.2011.03.009

基金项目: the National Science Foundation of China(40102027%50578151)%the Beijing Natural Science Foundation(8052017%8092025%8102030)%the National S&T Major Project of China(2009ZX07207-008-4-02%2009ZX07419-002-4%2008ZX070007-008-4-2%2011YXL016)

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China;Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 10083, China
School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China

Funds: the National Science Foundation of China(40102027%50578151)%the Beijing Natural Science Foundation(8052017%8092025%8102030)%the National S&T Major Project of China(2009ZX07207-008-4-02%2009ZX07419-002-4%2008ZX070007-008-4-2%2011YXL016)

摘要: Objective In this study, we examined the biodegradation of Dichloroethylene (DCE) by two strains of aerobic bacteria.Methods Using batch experiments, we measured the biodegradation rates of DCE and the residual concentrations of DCE for each bacterial strain. The varying trends in biodegradation rates with different initial concentrations of DCE were fitted to kinetic models.Results The biodegradation kinetics of DCE by the strain DT-X, which uses toluene as co-metabolic substrate, fitted the Monod model (corresponding parameters: vmax=0.0075 h-1, Ks=2.12 mg/L). The biodegradation kinetics of DCE by the strain DT-M, which uses 1,1-Dichloroethylene as single substrate, fitted the Haldane model (parameters: vmax =0.0046 h-1, Ks=4.25 mg/L, ki=8.47 mg/L).Conclusion The substrate removal rate constant of 1,1-Dichloroethylene of the co-metabolic strain DT-X was much higher than that of strain DT-M. The substrate removal rates obtained from both bacterial strains in this study were higher than those reported in similar studies.
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Abstract: Objective In this study, we examined the biodegradation of Dichloroethylene (DCE) by two strains of aerobic bacteria.Methods Using batch experiments, we measured the biodegradation rates of DCE and the residual concentrations of DCE for each bacterial strain. The varying trends in biodegradation rates with different initial concentrations of DCE were fitted to kinetic models.Results The biodegradation kinetics of DCE by the strain DT-X, which uses toluene as co-metabolic substrate, fitted the Monod model (corresponding parameters: vmax=0.0075 h-1, Ks=2.12 mg/L). The biodegradation kinetics of DCE by the strain DT-M, which uses 1,1-Dichloroethylene as single substrate, fitted the Haldane model (parameters: vmax =0.0046 h-1, Ks=4.25 mg/L, ki=8.47 mg/L).Conclusion The substrate removal rate constant of 1,1-Dichloroethylene of the co-metabolic strain DT-X was much higher than that of strain DT-M. The substrate removal rates obtained from both bacterial strains in this study were higher than those reported in similar studies.
- Aerobic strain /
- DCE /
- Biodegradation /
- Kinetics

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Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

doi: 10.3967/0895-3988.2011.03.009

刊出日期: 2011-06-20

关键词:

Aerobic strain /

DCE /

Biodegradation /

Kinetics

摘要: Objective In this study, we examined the biodegradation of Dichloroethylene (DCE) by two strains of aerobic bacteria.Methods Using batch experiments, we measured the biodegradation rates of DCE and the residual concentrations of DCE for each bacterial strain. The varying trends in biodegradation rates with different initial concentrations of DCE were fitted to kinetic models.Results The biodegradation kinetics of DCE by the strain DT-X, which uses toluene as co-metabolic substrate, fitted the Monod model (corresponding parameters: vmax=0.0075 h-1, Ks=2.12 mg/L). The biodegradation kinetics of DCE by the strain DT-M, which uses 1,1-Dichloroethylene as single substrate, fitted the Haldane model (parameters: vmax =0.0046 h-1, Ks=4.25 mg/L, ki=8.47 mg/L).Conclusion The substrate removal rate constant of 1,1-Dichloroethylene of the co-metabolic strain DT-X was much higher than that of strain DT-M. The substrate removal rates obtained from both bacterial strains in this study were higher than those reported in similar studies.

English Abstract

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China;Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 10083, China

School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China

Publish Date: 2011-06-20

Keywords:

Abstract: Objective In this study, we examined the biodegradation of Dichloroethylene (DCE) by two strains of aerobic bacteria.Methods Using batch experiments, we measured the biodegradation rates of DCE and the residual concentrations of DCE for each bacterial strain. The varying trends in biodegradation rates with different initial concentrations of DCE were fitted to kinetic models.Results The biodegradation kinetics of DCE by the strain DT-X, which uses toluene as co-metabolic substrate, fitted the Monod model (corresponding parameters: vmax=0.0075 h-1, Ks=2.12 mg/L). The biodegradation kinetics of DCE by the strain DT-M, which uses 1,1-Dichloroethylene as single substrate, fitted the Haldane model (parameters: vmax =0.0046 h-1, Ks=4.25 mg/L, ki=8.47 mg/L).Conclusion The substrate removal rate constant of 1,1-Dichloroethylene of the co-metabolic strain DT-X was much higher than that of strain DT-M. The substrate removal rates obtained from both bacterial strains in this study were higher than those reported in similar studies.

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doi: 10.3967/0895-3988.2011.03.009

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

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Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

doi: 10.3967/0895-3988.2011.03.009

English Abstract

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China;Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 10083, China School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China

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School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China;Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 10083, China

School of Water Resource and Environment, China University of Geosciences, Beijing 10083, China