Effect of granular activated carbon on the enhancement of cometabolic biodegradation of phenol and 4-chlorophenol

被引：0
作者：
Li Y. [1 ,2 ]
Rao T. [1 ]
Liu Z. [1 ]
机构：
[1] Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Ministry of Education
[2] State Key Laboratory of Pollution Control and Resources Reuse, Nanjing University
来源：
Tsinghua Science and Technology | 2010年 / 15卷 / 05期
基金：
中国国家自然科学基金;
关键词：
4-chlorophenol; activated carbon; activation method; cometabolism; phenol; reversible adsorption;
D O I：
10.1016/S1007-0214(10)70104-8
中图分类号：
学科分类号：
摘要：
Enhancement of the cometabolic biotransformation of 4-chlorophenol (4-cp) and phenol were studied using chemically and thermally granular activated carbons (GACs). It was found that both chemically activated and thermally activated GAC effectively adsorb phenol and 4-cp. More than 80 adsorped substrates were later desorpted, showing a reversible sorption behaviour in the GAC. For each activated carbon type, 4-cp was preferentially adsorbed over phenol and the desorption efficiencies of both phenol and 4-cp were found to increase linearly with the initial mass of adsorbate in the adsorbent. The biodegradation of 500 mg/L phenol by Pseudomonas putida took 24 h while the biodegradation of 4-cp took 32 h. Inhibitions during the cometabolic biodegradation of 4-cp and phenol were alleviated by the addition of the GACs. The system with chemically-activated coconut type GAC had better system stability over thermally-activated peat type GAC. The results show that GAC can be regenerated by the cells enhancement of the cometabolic biotransformation of 4-cp and phenol can be accomplished using chemically-activated coconut type GAC. © 2010 Tsinghua University Press.
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页码：580 / 585
页数：5
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