厌氧共代谢条件下苯胺黑药的生物降解  

Biodegradation of aniline aerofloat on anaerobic co-metabolism

作　　者：董明[1] 宋卫锋[1] 林丽婷[1] 简静仪 李海宇[1] 程亚杰[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广州510006

出　　处：《环境工程学报》2017年第5期2768-2773,共6页Chinese Journal of Environmental Engineering

基　　金：广东省科技计划项目(2014A020209077)

摘　　要：采用自制厌氧反应器进行不同基质与苯胺黑药的共代谢特性研究。结果表明,经过72 d的驯化,反应器启动完成。在不同基质种类和比例条件下,蔗糖、乙酸钠、葡萄糖、淀粉和维生素C对苯胺黑药的厌氧降解有促进作用。当乙酸钠与苯胺黑药的质量比为2∶1时降解效率最高,出水苯胺黑药浓度23.21 mg·L^(-1),降解率82.00%,出水COD为35.6 mg·L^(-1),去除率92.90%。对外加基质与苯胺黑药质量比为2∶1时的实验数据进行动力学分析,发现无外加基质组和共代谢基质为葡萄糖、蔗糖、淀粉和乙酸钠时,苯胺黑药的降解过程均符合一级动力学规律,而维生素C并不符合。反应速率常数的顺序为乙酸钠>淀粉>葡萄糖>蔗糖>空白。A self-made anaerobic reactor was used to study the co-metabolism characteristics of aniline aerofloat with different substrates.The results show that the anaerobic reactor was successfully established after 72 days of operation.Sucrose,sodium acetate,glucose,starch and vitamin C could promote aerobic degradation under different types of substrate and ratios.When the mass ratio of sodium acetate to aniline aerofloat is 2∶1,the maximum degradation efficiency of the aniline aerofloat is achieved.Furthermore,the aniline aerofloat concentration in the effluent,the degradation rate,the COD in the effluent,and the COD removal rate are 23.21 mg·L^（-1）,82.00%,35.6 mg·L^（-1）,and 92.90%,respectively.When the co-metabolism substrate dosing ratio is 1∶2,aniline aerofloat degradation in the four experimental groups and the control group is well described by the first-order kinetics equation,but that of vitamin C isn＇t.The ordering of the reaction rate constants was sodium acetate starch〉glucose〉sucrose〉blank.

关 键 词：苯胺黑药 厌氧 共代谢 动力学 

分 类 号：X703[环境科学与工程—环境工程]