细菌JF901704菌株对铊的吸附特性研究  

Studies on Biosorption Characterization of Thallium Ion by Bacterial JF901704 Strain

作　　者：龙建友[1] 罗定贵[1,2,3] 陈永亨[1,2,3] 

机构地区：[1]广州大学环境科学与工程学院,广东广州510006 [2]广东省放射性核素污染控制与资源化重点实验室,广东广州510006 [3]珠江三角洲水质安全与保护实验室,广东广州510006

出　　处：《环境科技》2014年第1期40-43,共4页Environmental Science and Technology

基　　金：国家自然科学基金重点项目(40930743;41372248);广州市教育局项目(2012A033);广东省科技计划项目(2010B030900008);广东省自然科学基金项目(S2013010016540)

摘　　要：从某含铊废水中筛选出一株耐铊细菌(菌株序列登陆号:JF901704)菌株,研究了溶液初始浓度、吸附时间、pH值、温度、摇床转速及菌体生物量对铊的吸附效果影响,结果表明,JF901704菌株在铊初始质量浓度20 mg/L,吸附时间60 min,pH值7.0,温度30℃,摇床转速150 r/min,生物量1.0 g/L时,吸附效果最佳,在该条件下,JF901704菌株对铊的吸附率可达89.05%;红外光谱分析结果表明,该菌株细胞壁中的羧基、亚氨基及羟基对铊吸附起主要贡献的官能团。A Thallium resistant bacterium was isolated from waste water containing thallium （Strain sequence accessionnumber： JF901704）. The adsorption effect including initial concentration of the solution, adsorption time, pH, temperature,rotation and the biomass of strain was studied. The results showed that optimum conditions for maximum biosorption werefound at pH 7.0 , biomass 1.0 g/L,initial thallium concentration 20 g/L,rotation 150 r/min and contact time 60 min at 30℃Under this condition,the adsorption rate could reach 89.05%. The Fourier transform infrared spectroscopy （FT-IR） analysisindicated that the main functional groups responsible for biosorption of Thallium were carboxyl, amino and hydroxyl groups.

关 键 词：铊 生物吸附 吸附特性 红外光谱 

分 类 号：X1[环境科学与工程—环境科学]