Sorption and Biodegradation of 17β-estradiol by Acclimated Activated Sludge under Anaerobic Conditions
The sorption and biodegradation of 17β-estradiol (E2) was investigated by spiking E2 into acclimated activated sludge under anaerobic conditions in laboratory-scale. The effect of temperature on the sorption and biodegradation was also studied. Results showed that, E2 was removed 99％ after 2 h for the tested concentrations (5-15 μg·L-1). E2 sorption followed both the Freundlich and linear sorption models. The distribution coefficient (Kd) was 543.7 L·kg-1 at 20℃. E2 degradation was well described by first-order reaction kinetics and the rate constant was 2.765 h-1 at 20℃. Temperature has significant effect on both the sorption and biodegradation of E2 by activated sludge. Distribution coefficient decreased but reaction rate constant increased with the increasing temperature. Partitioning played a significant role in the transfer of E2 between the aqueous phase and the sludge phase. The biodegradation behavior was inside the sludge phase.
17β-estradiol anaerobic sorption biodegradation temperature
Qingling Zeng Yongmei Li Guowei Gu
State Key Laboratory of Pollution Control and Resources Reuse,School of Environmental Science and Engineering,Tongji University,Shanghai,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）