改性干菌吸附去除染化废水中共存污染物活性蓝13及五氯酚的研究  

Biosorption of Reactive Blue 13 and Pentachlorophenol from Dye Wastewater Using Treated Pseudomonas sp. Bacteria

作　　者：钱勇兴[1] 李中坚[1] 杨彬[1] 张兴旺[1] 雷乐成[1] QIAN Yong-xing LI Zhong-jian YANG Bin ZHANG Xing-wang LEI Le-cheng(Industrial Ecology and Environment Research Institute, Zhejiang University, Hangzhou 310027, China)

机构地区：[1]浙江大学工业生态与环境研究所,浙江杭州310027

出　　处：《高校化学工程学报》2016年第5期1203-1212,共10页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(21276231;21376216)

摘　　要：为了提高干菌吸附污染物的性能,分别用酸质子化处理的干菌(B.1)以及先去羧基后酸质子化处理的干菌(B.2)对共存污染物活性蓝13(RB13)和五氯酚(PCP)进行吸附去除。实验结果表明,pH值是影响吸附性能的主要因素,干菌在酸性条件下(pH=3)的污染物吸附能力要高于中性条件(pH=7)。中性条件下,干菌吸附污染物符合拟二级动力学模型及Langmuir吸附等温模型,B.2和B.1的最大单层饱和吸附量分别为38.02(RB13)、48.78 mg×g^(-1)(PCP)和26.35(RB13)、33.90 mg×g^(-1)(PCP);酸性条件下,干菌吸附RB13符合Langmuir吸附等温模型,而吸附PCP则是线性吸附模型。改性后的干菌强化了RB13及PCP的吸附去除,同时B.2较B.1和未改性干菌有更好的污染物去除效果。In order to enhance adsorption performance of dried bacteria biosorbents, an acid treated dried bacteria （B.1） and a dried bacteria treated with carboxyl-removal followed by protonation （B.2） were used to treat Reactive Blue 13 （RB 13） and Pentachlorophenol （PCP） co-existed wastewater. The results indicate that pH is the main factor, and biosorption capacities under acidic condition （pH=3） are higher than that under neutral conditions （pH=7）. Both biosorbents follow the pseudo-second order and the Langmuir isotherm models during adsorption. The maximum monolayer biosorption capacity of RB13 （PCP） is 38.02 （48.78） mg.g-1 for B.2 and 26.35 （33.90） mg.g-1 for B.1 under neutral conditions. However, the adsorption processes follow the Langmuir isotherm model for RB 13, but a linear model for PCP under acidic conditions. Both biosorbents show improved biosorption of RB 13 and PCP from aqueous solutions, and B.2 shows better performance than B.1.

关 键 词：生物吸附 改性干菌 持久性有机污染物(POPs) 吸附机理 

分 类 号：X789[环境科学与工程—环境工程]