期刊
ENZYME AND MICROBIAL TECHNOLOGY
卷 39, 期 5, 页码 1036-1041出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2006.02.006
关键词
Aspergillus awamori; biodegradation; phenol; catechol; 2,4-dichlorophenol; 2,6-dimethoxyphenol
The mycelium (or conidia) of Aspergillus awamori NRRL 3112 was investigated for its ability to degrade phenol, catechol, 2,4-dichlorophenol and 2,6-dimethoxyphenol in high concentrations. The biodegradation studies were performed in a liquid medium with the phenolic compounds as a sole carbon and energy source. The organism had mineralized phenol concentration of 0.3 g/l in 60 h, 0.6 g/l in 72 h and 1.0 g/l in 7-8 days. A. awamori had fully degraded catechol concentration of 1.0 g/l in 82 h, 2.0 g/l in 108 h and 3.0 g/l in 124 h. Five days are sufficient for complete biodegradation of 1.0 and 2.0 g/l 2,4-dichlorophenol. The higher concentration of 3.0 g/1 was degraded at a rate of 85% for 6 days. The degradation of 2,6-dimethoxyphenol goes slow and only 1.0 g/1 concentration was fully degraded for 7 days. In case of 2.0 and 3.0 g/1 no complete degradation can be observed even after 8 days of the process. Successfully simulated phenols degradation profiles in all studies were obtained by Haldane-type kinetics. The values of endogenous or decay and yield coefficients for all phenols at different concentrations were also determined. (c) 2006 Elsevier Inc. All rights reserved.
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