Biodegration of LAS in an urban malodorous river

doi:10.3969/j.issn.1000-5641.2018.06.010

Abstract

Abstract: Biodegradation of the anion-surfactant LAS in the urban malodorous water of Liwan River in Putuo District (Shanghai) was studied by "river-die away"under different conditions. In particular, the influences of temperature, pH, initial concentration of LAS, nutrients (C₆H₁₂O₆) and aeration conditions on the biodegradation of LAS were investigated. The study showed that when the temperature increased from 10℃ to 30℃, the half-life of LAS decreased from 6.5 days to 2.5 days. The biodegration of surfactant at pH=8.5±0.2 was slightly better than that at pH=7.5±0.2 and pH=9.5±0.2. With greater initial concentration, the half-life of LAS increased from 2.9 days to 3.4 days. C₆H₁₂O₆ inhibited degradation of LAS, but the degradation of LAS accelerated under continuous aeration conditions.

Key words: LAS, urban malodorous river, biodegration

CLC Number:

X52
X522

YIN Chao, HUANG Min-sheng, HE Yan, CUI He, WANG Di-fang, ZHANG Ting-yue, XIAO Bing. Biodegration of LAS in an urban malodorous river[J]. Journal of East China Normal University(Natural Sc, 2018, 2018(6): 81-87.

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