胺基功能化凹土吸附处理铅酸蓄电池含铅废水  

Adsorption of Lead Ion from Lead Acid Battery Manufacturing Wastewater by Amine Modified Attapulgite

作　　者：潘荣容 薛爱莲[1] 赵丽[1] 庄永祥[1] 李梅生[1] 周守勇[1] 

机构地区：[1]淮阴师范学院化学化工学院,江苏淮安223300

出　　处：《淮阴师范学院学报（自然科学版）》2014年第3期218-222,共5页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：江苏省高校大学生实践创新训练计划项目(2012JSSPITP2482)

摘　　要：铅酸蓄电池企业在生产过程中产生大量的强酸性含铅废水,如不妥善处理将会对环境造成污染.以γ-氨丙基三乙氧基硅烷改性凹土作为吸附剂,将某铅酸蓄电池企业在生产过程中产生的强酸性含铅废水作为实验用水,通过静态实验考察改性凹土对废水中Pb2+的吸附性能.结果表明,将废水pH值调节为4.02,废水中Pb2+的去除率可达到99.12%;废水中Pb2+的去除率随着吸附剂用量和吸附时间的增加而升高;改性凹土吸附废水中的Pb2+符合拟二级动力学模型.改性凹土吸附剂对铅酸废水治理具有较好的应用前景.Lead-acid wastewater which was produced from significant impact on the environment. An amine-terminated lead acid battery manufacturing plant will have a organosilicon （y-aminopropyltriethoxysilane） was used to introduce terminal amino groups onto the attapulgite surface as adsorbent. The adsorption behaviors of Pb2＋ in wastewater were studied. The results show that very high removal rate of 99. 12% when pH value was 4. 02. The removal rate of Pb2 ＋ increases with the increase in adsorbent dosage and contact time. The kinetics of Pb2＋ adsorption nicely followed the pseudo-second-order kinetic model. The better Pb2＋ removal rate dem- onstrates that modified attapulgite has better application prospect to deal with the lead-acid wastewater.

关 键 词：胺基功能化凹土 铅酸废水 吸附 

分 类 号：X703[环境科学与工程—环境工程]