期刊
BIODEGRADATION
卷 18, 期 6, 页码 719-729出版社
SPRINGER
DOI: 10.1007/s10532-007-9100-3
关键词
4-Chlorophenol; diodegradation; Candida tropicalis; kinetics; phenol
Biodegradation of phenol and 4-chlorophenol (4-cp) using a pure culture of Candida tropicalis was studied. The results showed that C. tropicalis could degrade 2,000 mg l(-1) phenol alone and 350 mg l(-1) 4-cp alone within 66 and 55 h, respectively. The capacity of the strain to degrade phenol was obviously higher than that to degrade 4-cp. In the dual-substrate system, 4-cp intensely inhibited phenol biodegradation. Phenol beyond 800 mg l(-1) could not be degraded in the presence of 350 mg l(-1) 4-cp. Comparatively, low-concentration phenol from 100 to 600 mg l(-1) supplied a sole carbon and energy source for C. tropicalis in the initial phase of biodegradation and accelerated the assimilation of 4-cp, which resulted in the fact that 4-cp biodegradation velocity was higher than that without phenol. And the capacity of C. tropicalis to degrade 4-cp was increased up to 420 mg l(-1) with the presence of 100-160 mg l(-1) phenol. In addition, the intrinsic kinetics of cell growth and substrate degradation were investigated with phenol and 4-cp as single and mixed substrates in batch cultures. The results illustrated that the models proposed adequately described the dynamic behaviors of biodegradation by C. tropicalis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据