单歧藻降解4-乙基酚的动力学研究  

Study on Kinetics of 4-ethylphenol Biodegradation by Tolypothrix

作　　者：赵丽[1] 刘征涛[2] 冯流[1] 方征[2] 李霁[2] 孔志明[3] 

机构地区：[1]北京化工大学化工学院,北京100029 [2]中国环境科学研究院,北京100012 [3]南京大学环境科学系,江苏南京210093

出　　处：《环境科学研究》2003年第6期19-22,共4页Research of Environmental Sciences

基　　金：国家自然科学基金资助项目(29977020)

摘　　要：以4-乙基酚为研究对象,分4个系列浓度组研究其在单歧藻作用下的可降解性及其影响因素,并采用最近提出的生物降解二级反应动力学方程拟合其降解过程。实验结果表明,单歧藻可降解4-乙基酚,其降解速率与藻细胞浓度和有机物初始浓度有关。在较低的有机污染物浓度范围内,动力学常数K主要由藻细胞活性即藻生长速率r决定。With different Tolypothrix density and 4-ethylphenol concentration,four groups of tests were conducted to study the biodegradability of 4-ethylphenol and its influencing factors.Experimental results showed that Tolypothrix was able to degrade 4-ethylphenol,the degradation process was in accordance with the second-order kinetic equation,and the degradation rate depended on Tolypothrix density and initial 4-ethylphenol concentration.With low organic compound concentration,the kinetic constant K is mainly determined by the rate of Tolypothrix growth r.

关 键 词：单歧藻 4-乙基酚 生物降解动力学 

分 类 号：X172[环境科学与工程—环境科学]