摘要
利用活性污泥法考察了间氟苯酚的好氧生物降解性.结果表明,100 mg/L间氟苯酚经16 h降解,溶液中基本检测不到间氟苯酚,有机氟原子几乎全部降解为无机氟离子.间氟苯酚可以用作微生物生长的唯一碳源和能源,活性污泥中的微生物可以有效地降解间氟苯酚.利用高效液相色谱和色质联机技术研究了间氟苯酚的好氧生物降解途径,研究表明间氟苯酚首先羟基化生成中间产物氟邻苯二酚,羟基化中间产物通过邻位途经裂解开环,然后环化脱氟.
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 blodegradation 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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第9期1841-1845,共5页
Environmental Science
基金
上海市科委重点研究项目(05JC14059
05DZ22330)
污染控制与资源化研究国家重点实验室青年教师自然科学研究预研基金项目(PCRRYSF06001)
关键词
间氟苯酚
好氧生物降解性
邻位环断裂
脱氟
3-fluorophenol
aerobic biodegradation
ortho-cleavage pathway
defluorination
