摘要
By measuring the respiratory oxygen consumption, a study on the aerobic biodegradability of 2-fluorophenol, 3- fluorophenol and 4-fluorophenol was conducted using activated sludge acclimated by themselves respectively. The experimental results showed that bio-oxidation ratios of 2- fluorophenol, 3- fluorophenol and 4- fluorophenol were 25.30%, 35.28% and 36.60% respectively, and the constmdng rate constants were 0.009 3, 0.013 3 and 0.014 5 L/ gSS. h respect/vdy. The aerobic biodegradability of the mono-fluorophenols decreased in the order of 4- fluorop- henol〉3 - fluorophenol 〉2 - fluorophenol, resulting mainly from the different octanol/water partition coefficient and the different steric parameter of the fluorophenols which can affect the penetration of fluorophenol into cell membrane.
By measuring the respiratory oxygen consumption, a study on the aerobic biodegradability of 2fluorophenol, 3 fluorophenol and 4fluorophenol was conducted using activated sludge acclimated by themselves respectively. The experimental results showed that bio-oxidation ratios of 2 fluorophenol, 3fluorophenol and 4fluorophenol were 25.30%, 35.28% and 36.60% respectively, and the oxygen consuming rate constants were 0.009 3, 0.013 3 and 0.014 5 L/ gSS·h respectively. The aerobic biodegradability of the mono-fluorophenols decreased in the order of 4fluorop- henol>3fluorophenol >2fluorophenol, resulting mainly from the different octanol/water partition coefficient and the different steric parameter of the fluorophenols which can affect the penetration of fluorophenol into cell membrane.
基金
Supported by State Key Laboratory of Pollution Control and Resource Reuse ( No. PCRRF06007and PCRRYSF06001) and ShanghaiScience and Technology Commission (No.05JC14059and05DZ22330)
