Phenol inhibition and restoration of the bioactivity of anaerobic granular sludge.
Inhibition and restoration of different concentrations of phenol on the bioactivity of anaerobic granular sludge were investigated with laboratory-scale equipment. It indicated that phenol concentration lower than 50 mg/l show no inhibitory effect on bioactivities of granular sludge. However, methane productivity, extracellular polymeric substances (EPS) content, and coenzyme F(420) activity were decreased by varying degrees when phenol concentration adopted for inhibition ranged between 50 and 400 mg/l. Noticeably, methane productivity could be fully or partly restored in case the phenol was removed after 24 h of phenol inhibition.
Yan
Qun
Q
Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China. yanqun@jiangnan.edu.cn
Yu
Dan
D
Wang
Zhiliang
Z
Zou
Hua
H
Ruan
Wenquan
W
D001421:Bacteria, Anaerobic / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D001673:Biodegradation, Environmental / Q000187:drug effects; D008697:Methane / Q000378:metabolism; D019800:Phenol / Q000633:toxicity*; D012722:Sewage / Q000382:microbiology*
D012722:Sewage; D019800:Phenol; D008697:Methane