海藻酸钠/聚乙烯亚胺复合材料对Pb(Ⅱ)的吸附性能研究  

Adsorption of Pb(Ⅱ) by Sodium Alginate/Polyethyleneimine Composite Materials

作　　者：付秋平 张海润 罗云 娄杰 石登红[1] 莫昌琍[1] 罗军[1] 严伟[1] FU Qiu-ping;ZHANG Hai-run;LUO Yun;LOU Jie;SHI Deng-hong;MO Chang-li;LUO Jun;YAN Wei(College of Chemistry and Materials Engineering,Guiyang University,Guiyang 550005,China)

机构地区：[1]贵阳学院化学与材料工程学院,贵州贵阳550005

出　　处：《化学试剂》2022年第10期1457-1462,共6页Chemical Reagents

基　　金：贵阳学院科研资金资助项目[GYU-KY-(2022)];贵州省教育厅创新群体项目(黔教合KY字2020024号);贵州省大学生创新创业训练计划项目(2018520838)。

摘　　要：以海藻酸钠和聚乙烯亚胺为原料,制备海藻酸钠/聚乙烯亚胺(SA/PEI)复合材料,研究其对水中Pb(Ⅱ)的吸附去除性能。系统研究了各因素对SA/PEI吸附Pb(Ⅱ)效果的影响。结果表明,SA/PEI对Pb(Ⅱ)的吸附量与Pb(Ⅱ)初始浓度正相关,在360 min达到吸附平衡。吸附过程符合拟二级动力学和Langmuir等温吸附模型。在303.15 K时,Langmuir等温吸附模型拟合得到的最大吸附量为316.46 mg/g。第6次使用的SA/PEI对Pb(Ⅱ)仍表现出较好的去除效果。Sodium alginate/polyethyleneimine(SA/PEI)composite materials were prepared with sodium alginate(SA)and polyethyleneimine(PEI)as raw materials.The adsorption and removal performance of Pb(Ⅱ)from water by gel spheres was studied.The effects of various factors on the adsorption of Pb(Ⅱ)by SA/PEI were systematically studied.The results showed that the adsorption capacity of Pb(Ⅱ)on SA/PEI were positively correlated with the initial concentration of Pb(Ⅱ),and the adsorption equilibrium was reached in 360 min.The adsorption process accords with pseudo-second-order kinetics and Langmuir isothermal adsorption model.At 303.15 K,the maximum adsorption capacity fitted by Langmuir isothermal adsorption model was 316.46 mg/g.The sixth application of SA/PEI still showed a good removal effect on Pb(Ⅱ).

关 键 词：海藻酸钠 聚乙烯亚胺 吸附 重金属离子 Pb(Ⅱ) 水处理 

分 类 号：O69[理学—化学]