镰刀菌HJ01对对氯苯酚的降解特性

采用实验室分离的一株镰刀菌HJ01,以对氯苯酚(4-CP)为降解底物,以蔗糖为外加碳源,考察了蔗糖质量浓度、降解温度、初始pH对4-CP降解效果的影响,初步探讨了镰刀菌HJ01对4-CP的降解动力学和降解机理.实验结果表明:该菌株能以4-CP为惟一碳源和能源生长;在外加蔗糖为碳源,蔗糖质量浓度为3 g/L、降解温度为30℃、初始pH为8的条件下,50 mg/L4-CP能在6 d内被完全降解.以4-CP为惟一碳源和外加蔗糖下的降解动力学分别符合Haldane模型和一级动力学方程.

Degradation Characteristics of Fusarium sp. HJ01 on 4-Chlorophenol

The strain of Fusarium sp. HJ01 isolated in our laboratory was used to degrade 4-chlorophenol (4-CP). The effects of sucrose (additional carbon source) mass concentration, degradation temperature and initial pH on 4-CP degradation were investigated. The kinetics and mechanism of 4-CP degradation were explored. The experimental results show that: This strain can grow with 4-CP used as the sole carbon source and energy source; Under the conditions of sucrose mass concentration 3 g/L, degradation temperature 30 ℃ and initial pH 8, 4-CP with mass concentration of 50 mg/L can be completely degraded in 6 days. The degradation kinetics of 4-CP used as the sole carbon source, and that of 4-CP with sucrose as the additional carbon source are accord respectively with Haldane model and the first order kinetics equation.