Methanogenic degradation of four phenolic compounds
Methanogenic degradation of four phenolic compounds
复制标题
四种酚类化合物的产甲烷降解
DOI：
10.1016/0043-1354(85)90189-7
复制
发表时间：
1985
期刊：
影响因子：
12.8
通讯作者：
M. D. Rivera
中科院分区：
文献类型：
--
作者：
L. Young;M. D. Rivera
研究了苯酚、间苯三酚、对苯二酚和对甲酚在产甲烷条件下的厌氧代谢。利用某城市污水处理厂沼气池的菌群进行厌氧间歇试验。在一年多的时间里，对底物浓度、气体形成和降解过程中形成的几种中间体进行了监测。随着微生物群落对每一种酚类化合物的驯化，代谢率和气体形成率普遍增加，对甲酚除外。所有四种化合物的化学计量降解气体最终产物被观察到。醋酸盐作为产甲烷前体存在。间苯三酚、对苯二酚和对甲酚在矿化前被代谢为苯酚，表明在初始代谢阶段发生了去羟基化和去甲基化。有证据表明，去甲基化是厌氧甲酚代谢的限速步骤。
The anaerobic metabolism of phenol, phloroglucinol, hydroquinone andp-cresol under methanogenic conditions was characterized. Anaerobic batch studies were carried out with inocula from a municipal sewage treatment plant digester. Substrate concentrations, gas formation and several intermediates formed during degradation were monitored over a period of more than a year. With acclimation of the microbial community to each of the phenolic compounds, the rates of metabolism and gas formation generally increased, except in the case ofp-cresol. Stoichiometric degradation of all four compounds to gaseous end products was observed. Acetate was present as a methanogenic precursor. Phloroglucinol, hydroquinone andp-cresol were metabolized to phenol prior to mineralization, indicating that dehydroxylation and demethylation takes place during the initial metabolic phase. Evidence suggests that demethylation is the rate limiting step for anaerobicp-cresol metabolism.