title: [Aerobic biodegradation performance of six volatile organic compounds by activated sludge acclimated with toluene].
abstract: The degradation performance of six volatile organic compounds (VOCs), toluene, o-xylene, m-xylene, p-xylene, benzene and chlorobenzene by activated sludge acclimated with toluene were studied. The experimental results showed that the biodegradation rates of o-xylene, m-xylene, p-xylene, benzene and chlorobenzene increased with increasing of their initial liquid concentration; when concentrations of o-xylene, m-xylene, p-xylene, benzene and chlorobenzene were less than 149 mg/L, 129 mg/L, 133 mg/L, 234 mg/L and 146 mg/L respectively, neither of them brought any notable inhibition or poisonous effects on microbes, and their aerobic biodegradation accorded with first-order reaction. When concentrations of toluene were more than 85 mg/L, its biodegradation rate didn't increase with increasing of its initial liquid concentration and the biodegradation of toluene accorded with the Monod equation.
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Heqing
authors.initials: H
authors.lastname: Zhang
authors.forename: Hongying
authors.initials: H
authors.lastname: Hu
authors.forename: Jinying
authors.initials: J
authors.lastname: Xi
mesh_terms: D000332:Aerobiosis; D001554:Benzene / Q000378:metabolism; D001673:Biodegradation, Environmental; D002722:Chlorobenzenes / Q000378:metabolism; D009930:Organic Chemicals / Q000378:metabolism*; D012722:Sewage; D014050:Toluene / Q000378:metabolism*; D014835:Volatilization; D014992:Xylenes / Q000378:metabolism
chemical_list: D002722:Chlorobenzenes; D009930:Organic Chemicals; D012722:Sewage; D014992:Xylenes; D014050:Toluene; D001554:Benzene; C031294:chlorobenzene