枯草芽孢杆菌对电镀废水中镉的吸附  

Biosorption of Cadmium from Cadmium-containing Electroplating Wastewater by Bacillus subtilis

作　　者：代淑娟[1,2] 王玉娟[3] 魏德洲[2] 高淑玲[2] 

机构地区：[1]河北理工大学资源与环境学院,河北唐山063009 [2]东北大学资源与土木工程学院,沈阳110004 [3]烟台金建设计研究工程有限公司,山东烟台264000

出　　处：《有色金属》2010年第3期156-159,共4页Nonferrous Metals

基　　金：国家自然科学基金资助项目(50174014);辽宁省自然科学基金项目(20042021);辽宁省科技计划项目(2006223002)

摘　　要：研究枯草芽胞杆菌对电镀废水中镉的吸附过程,探讨各种因素对吸附效果的影响。结果表明,pH为8、吸附剂用量为10g/L(湿重)、搅拌转数为800 r/min、吸附时间为10m in的条件下,废水中镉的吸附率达93%以上。吸附镉后枯草芽胞杆菌细胞膨大,色泽变亮,细胞之间相互粘连。Cd(Ⅱ)与细胞表面的钠进行了离子交换吸附。The biosorption of cadmium from cadmium-containing electroplating wastewater by Bacillus subtilis is investigated,and the effects of some experiment factors are discussed.The results show that the adsorption rate achieved above 93% with the optimal condition that pH is 8,the bacteria with biomass of Bacillus subtilis is 10g/L(wet weight),whisking revolution is 800r/min,and adsorption time is 10min.The The Bacillus subtilis have expanded,have brighter color,and have some conglutinations among cells after ads...

关 键 词：环境工程 电镀废水 生物吸附 枯草芽胞杆菌 镉 

分 类 号：X781.1[环境科学与工程—环境工程]