丙烯酰胺型高吸水树脂对重金属离子的吸附及解吸附性能  

Adsorption and desorption properties of acrylamide superabsorbent polymer for heavy metal ions

作　　者：王品[1] 尹国强[2] 杜建军[1] 王新爱[2] 黄帮裕[1] 唐俏云[2] 彭天保[2] 

机构地区：[1]仲恺农业工程学院环境科学与工程学院,广东广州510225 [2]仲恺农业工程学院化学化工学院,广东广州510225

出　　处：《仲恺农业工程学院学报》2012年第2期42-45,共4页Journal of Zhongkai University of Agriculture and Engineering

基　　金：国家自然科学基金(30971867;31172031);广东省自然科学基金(9251022501000003);广东省科技计划(2008B021000043);教育部留学回国人员科研启动基金(教外司留[2009]1341号)资助项目

摘　　要：以自制和市售的3种丙烯酰胺型高吸水树脂为试样,通过静态吸附法,就树脂对Cd2+、Cu2+和Ni2+等3种重金属离子的吸附行为以及树脂吸附Cu2+后在1 mol/L的HCl溶液中的解吸附性能进行了研究.结果表明,离子浓度越大,丙烯酰胺型高吸水树脂对Cd2+、Cu2+和Ni2+的吸附量也越大,最大吸附量分别达到1.66 mmol/g、3.42 mmol/g和1.31 mmol/g.树脂在3种重金属离子的混合溶液中呈现一定的选择性吸附,吸附量大小依次为Cu2+>Cd2+>Ni2+.3种树脂吸附Cu2+后在1 mol/L的HCl溶液中解吸附3 min时,解吸附率分别达到98.62%、98.45%和83.87%.The adsorption properties of three kinds of acrylamide superabsorbent polymers,both of sale and self-prepared,for Cd2＋,Cu2＋ and Ni2＋ were discussed.The desorption behavior of adsorbed polymers for Cu2＋ in 1 mol/L HCl solution were studied.The results showed that the adsorption capacities for Cd2＋,Cu2＋ and Ni2＋ were increased with the increase of the concentration of heavy metal ions,and the maxima were found to be 1.66 mmol/g,3.42 mmol/g and 1.31 mmol/g,respectively.The polymers showed that the selective adsorption in ternary metal ion solution,and the sequence of the adsorption capacies were Cu2＋〉Cd2＋〉Ni2＋.The desorption ratios of Cu2＋ on the three kinds of polymers were 98.62 %,98.45 % and 83.87 %,respectively,in 3 minutes.

关 键 词：丙烯酰胺 高吸水树脂 重金属离子 选择性吸附 

分 类 号：TQ316.6[化学工程—高聚物工业]