Volume 24 Issue 3
Jun.  2011
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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

Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

doi: 10.3967/0895-3988.2011.03.009
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)
  • 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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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Kinetic Models of Dichloroethylene Biodegradation by Two Strains of Aerobic Bacteria

doi: 10.3967/0895-3988.2011.03.009
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)

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.

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

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