摘要
研究分析光合细菌球形红细菌在厌氧光照条件下降解邻二氯苯的条件和机理。结果表明,在厌氧光照条件下球形红细菌的最佳生长和对邻二氯苯的最佳降解条件为:pH7.0,温度为30℃,接种量10%。在最佳条件下,邻二氯苯的去除率可达90%以上;其降解中间产物主要有氯苯、4-羟基苯甲酸;根据降解产物的分析,推断球形红细菌降解邻二氯苯的机理主要是按照先脱掉一个氯原子生成氯苯,然后氯苯进一步脱氯并通过4-羟基苯甲酸的代谢途径开环进行。
The influences of several factors on the growth and removal for 1,2-Dichlorobenzene of Rhodo- bacter sphaeroidcs under phototrophic （anaerobic in light） condition were analyzed in this study. The results demonstrated that the optimum conditions for the growth of the strain and the removal rate for 1,2-Dichlorobenzene were pH 7.0, temperature at 30℃ and inoculation amount of 10% under phototrophic condition. The removal rate for 1,2-Dichlorobenzene reached 90%under the optimal conditions. Furthermore, analysis of degradation products of 1,2-dichlorobenzene by the strain tested showed that chlorobenzene, 4-hydroxybenzote were formed. The probable degradative routs taken in the anaerobic metabolism of chlo- rinated aromatic compounds by Rhodobacter sphaeroides were that they are metabolized anaerobically to form chlorobenzene, and then chlorobenzene was dechlorinated and passed through 4-hydroxybenzote routes for aromatic ring cleavage.
出处
《微生物学通报》
CAS
CSCD
北大核心
2008年第5期666-673,共8页
Microbiology China
基金
国家科技攻关项目(No.2001BA540C)
关键词
光合细菌
球形红细菌
厌氧降解
邻二氯苯
Photosynthetic bacteria, Rhodobacter sphaeroides, Anaerobic degradation, 1,2-Dichlorobenzene
