摘要
[目的]考察Enterobacter sp．LY402在好氧条件下对氯丹的降解能力。[方法]将多氯联苯高效降解茵株Enterobacter sp．LY402运用到氯丹的好氧降解中，系统考察了LY402在好氧条件下降解过程的影响因素。[结果]在不加入其他碳源的情况下，对1．0mg／L氯丹混合物的4d降解率达到94％，对于浓度高达10．0mg／L氯丹混合物总降解率也能达到61％以上。降解体系的温度和pH值对氯丹的好氧降解率有一定影响，pH值5．0～8．0，温度30～40℃对氯丹的好氧降解有利。[结论]Enterobacter sp．LY402具有很强的好氧降解氯丹的能力。
[ Objective] The objective was to investigate Enterobacter sp, LY402 ＇s-ability to biodegradae chlordane under aerobic condition. [ Method] Enterobacter sp. LY402, which could effectively degrade PCBs, was used to degrad.e chlordane in liquid culture. Effects of concentration, pH, temperature and carbon source on the degradation performance were investigated. [ Result] After 4-day aerobic incubation at 30 ℃ without other carbon source, more than 94% of cis-chlordane （CC） and trans-chlordane （TC） mixture with a concentration of 1.0 mg/L was degraded. When exposed to a concentration as high as 10.0 mg/L, LY402 could still degrade 61% chlordane. The results showed that a pH range of 5.0 - 8.0 and a temperature range of 30 - 40 ℃ were most favorable for growth and effective degradation of chlordane. [ Conclusion] Enterobacter sp. LY402 ＇has a strong ability to biodegradae chlordane under aerobic condition.
出处
《安徽农业科学》
CAS
北大核心
2008年第23期10122-10123,10139,共3页
Journal of Anhui Agricultural Sciences
基金
科技部"863"项目(2004AA649070)
