氢氧化铝-改性淀粉絮凝剂对Cu^(2+)、Zn^(2+)吸附性能研究  

Adsorption of Cu^(2+) and Zn^(2+) by Aluminum Hydroxide Modified Starch Flocculant

作　　者：严秀洪 严晨思仪 马小云 赵君 任俊鹏 Yan Xiuhong;Yan Chensiyi;Ma Xiaoyun;Zhao Jun;Ren Junpeng(School of Chemistry and Materials Science,Guizhou Education University,Guiyang 510018,China)

机构地区：[1]贵州师范学院化学与材料学院,贵阳510018

出　　处：《山东化工》2022年第2期226-227,230,共3页Shandong Chemical Industry

基　　金：贵州师范学院大学生科研项目(2020DXS004)研究成果;贵州省教育厅特色重点实验室建设项目(黔教合KY字[2018]001);贵州师范学院“应用型专业有机化学实践课程群”一流课程建设项目(贵师院发[2018]100号);贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]263号)。

摘　　要：絮凝剂在水处理中占据很高的地位,但是传统絮凝剂所含金属离子浓度较高,对设备具有一定的腐蚀性。用氢氧化铝溶胶与丙烯酰胺和淀粉发生聚合反应,制备一种绿色、无毒、高效、价廉的新型絮凝剂,利用傅里叶红外光谱仪对絮凝的结构进行表征分析,运用原子分光光度计对絮凝剂吸附后的废水进行Cu^(2+)、Zn^(2+)的含量测定,研究絮凝剂加入量、pH值及沉淀吸附时间对废水中Cu^(2+)、Zn^(2+)的絮凝效果的影响。结果表明,絮凝剂对Cu^(2+)、Zn^(2+)的吸附率高达99%和95%以上。Flocculant occupies a high position in water treatment,but the concentration of metal ions contained in traditional flocculant is relatively high and corrosive to the equipment.A new green,non-toixc,efficient and cheap flocculant was prepared by polymerization with aluminum hydroxide,acrylamide and starch.The structure was characterized and analyzed by Fourier infrared spectrometer and the content of Cu^(2+)、Zn^(2+)in the wastewater after flocculant adsorption was determined by atomic spectrophotometer.The effect of flocculant dosage,pH and precipitation time on the flocculation of Cu^(2+)、Zn^(2+)in wastewater were studied.The results show that the flocculation adsorption rates of Cu^(2+)、Zn^(2+)can be reach 99%and 95%,respectively.

关 键 词：改性淀粉 氢氧化铝胶体 絮凝吸附性能 Cu^(2+) Zn^(2+) 

分 类 号：O647.3[理学—物理化学] X703[理学—化学]