[Biodegradability and degradation mechanism of 3-fluorophenol by the activated sludge].
An acclimated activated sludge was examined for its ability to degrade 3-fluorophenol in aerobic batch cultures. The result indicated that the organism degrades up to 100 mg/L 3-fluorophenol completely with approximately 100% fluoride anion release within 16 h. 3-Fluorophenol can serve as the sole carbon source and energy source for the organism. The acclimated activated sludge can degrade 3-fluorophenol effectively. The degradation mechanism study reveal that the initial step in the aerobic biodegradation of 3-fluorophenol is its transformation to fluorocatechol. Following transformation of the fluorophenol to fluorocatechol, ring cleavage by catechol 1, 2-dioxygenase proceedes via an ortho-cleavage pathway, then defluorination occurres.
Zhang
Chao-jie
CJ
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. myrazh@mamil.tongji.edu.cn
Zhou
Qi
Q
Chen
Ling
L
Yuan
Yuan
Y
Yu
Hui
H
D000064:Acclimatization; D001420:Bacteria, Aerobic / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*
D010636:Phenols; D012722:Sewage; C085046:3-fluorophenol