Fe^0/厌氧微生物体系降解2,4,6-三氯酚特性研究  

Characteristics of 2,4,6-trichlorophenol degradation by anaerobic microbe in the presence of element iron

作　　者：史雷[1] 戴友芝[1] 罗春香[1] 汤文琪[1] 王海阳[1] 

机构地区：[1]湘潭大学化工学院环境工程系,湘潭411105

出　　处：《环境工程学报》2009年第5期813-816,共4页Chinese Journal of Environmental Engineering

基　　金：湖南省自然科学基金资助项目(08JJ6003)

摘　　要：通过摇床间歇实验,研究了厌氧微生物与零价铁(Fe0)联合体系降解2,4,6-三氯酚(TCP)的特性,结果表明,在pH7.5,35℃,150 r/min,Fe010 g/L条件下,TCP初始浓度为30 mg/L时,TCP降解的拟一级反应速率常数为0.0207 h-1,添加少量碳源可达到0.0390 h-1,其降解速率是前者的1.88倍;添加碳源的体系在220 h内连续多次投加TCP降解率都达到80%以上,而不加碳源的体系在第2次投加TCP后降解率就只有30%左右;添加不同碳源,降解速率不同;添加2-溴乙烷磺酸钠(BESA)以及SO24-、NO3-和S2-对TCP降解有不同的抑制作用。The degradation of aqueous 2,4,6-trichlorophenol （ TCP ） by anaerobic microbe combined with element iron （microbe/ Fe^o） was investigated. Under the conditions of pH 7.5, 35℃ ,150 r/min, Fe^o10g/L, the pseudo-first-order rate constant of the degradation of TCP was 0. 0207 h^-1 when medium contained 30 mg/L TCP. Moreover, the degradation rate constant with some carbon source can reach O. 0390 h-l, approximately 1.88 times of the former. In the system with added carbon source, the degradation rate of TCP could reach more than 80% for three times adding during 220 h. In the system which had no carbon source, the degradation rate was about 30% at the second time. Different carbon sources have different effects on the degradation velocity of TCP by microbe/ Fe^o. BESA, S^2- , SO4^2- and NO3^- have different inhibition on the degradation of TCP by microbe/ Fe^o.

关 键 词：2 4 6-三氯酚 Fe0/微生物 碳源 BESA 电子受体 

分 类 号：X703[环境科学与工程—环境工程]