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Biodegradation of LAS in the anaerobic water of a representative inlet of Lake Dianchi
Wang Zhi (wazh519@hotmail.com); Tu Xin-hai; Xiao Bang-ding (bdxiao@ihb.ac.cn); Wu Xing-qiang; Liu Min; Chen Xu-dong; Wang Zhi; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2008
Source PublicationHuanjing Kexue
ISSN0250-3301
Volume29Issue:8Pages:2189-2194
AbstractBiodegradation and degradation kinetics of anion-surfactant (LAS) in the anaerobic water of a representative inlet (Haihe River) of Lake Dianchi under different incubation conditions were studied by the 'river die-away' test method. The influences of temperature, pH, initial concentration of LAS, aeration condition and added nutrients (NH4Cl or NaH2PO4) on the biodegradation of LAS in the water were investigated. The results demonstrate that LAS can be biodegraded by microorganisms in the water and that the percentage of degradation of LAS was in ore than 95% after 26 d. The biodegradation of LAS fit the second kinetic model. Incubation temperature,. initial concentration of LAS, aeration and added nutrients (NH4Cl or NaH2PO4) can all affect the biodegradation of LAS. When the incubation temperature increased from 10 degrees C to 25 degrees C, the biodegradation rate (p) of LAS increased from 0.21 d(-1) to 0.90 d(-1). The LAS degradation rate increased from 0.72 d(-1) under anaerobic condition to 1.97 d(-1) under continuous aeration condition. The increased initial concentrations of LAS lead to decrease of the biodegradation rate. NaH2PO4 accelerated the degradation of LAS but added NH4Cl instead inhibited degradation. In our experiment, pH value (7.05-9.44) had little influence on the biodegradation of LAS.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18745
Collection期刊论文
Corresponding AuthorWang Zhi; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wang Zhi ,Tu Xin-hai,Xiao Bang-ding ,et al. Biodegradation of LAS in the anaerobic water of a representative inlet of Lake Dianchi[J]. Huanjing Kexue,2008,29(8):2189-2194.
APA Wang Zhi .,Tu Xin-hai.,Xiao Bang-ding .,Wu Xing-qiang.,Liu Min.,...&Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2008).Biodegradation of LAS in the anaerobic water of a representative inlet of Lake Dianchi.Huanjing Kexue,29(8),2189-2194.
MLA Wang Zhi ,et al."Biodegradation of LAS in the anaerobic water of a representative inlet of Lake Dianchi".Huanjing Kexue 29.8(2008):2189-2194.
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