一种高吸水树脂对电镀废水中铜离子的吸附研究  

Adsorption of superabsorbent to Cu^(2+) in waste water

作　　者：曾明敏[1] 秦玉芳[1] 

机构地区：[1]南京信息职业技术学院微电子学院,江苏南京210046

出　　处：《化学试剂》2012年第5期460-462,共3页Chemical Reagents

摘　　要：以废弃聚乙烯(PE)塑料与具有亲水性基团的丙烯酸(AA)及其盐接枝共聚合成一种高吸水性树脂,并将所得高吸水树脂用于溶液中Cu2+的吸附。通过分光光度法研究了树脂去除水溶液中Cu2+的情况,考察了起始pH、树脂用量、金属离子起始浓度和吸附时间对金属离子去除率的影响。结果表明,该树脂对Cu2+具有较强的吸附性能。树脂初期吸附速率大,吸附达到平衡时的接触时间为30 min。当溶液pH为7.0,Cu2+初始浓度为25 mg/L,树脂用量在8 g/L时,树脂对Cu2+的去除率可达95.0%以上。The superabsorbent was prepared from waste plas- tics and acrylic acid （AA） by polymerization. The adsorption of the superabsorbent to Cu^2＋ was studied. The results have shown that the resin has a good adsorption to Cu^2＋ . The ad- sorption of copper ions on the resin differed greatly at different pH values,initial concentrations of Cu^2＋ and concentrations of resin. The adsorbing equilibriums are reached within 30 mi- nutes. When pH is about 7. 0, the initial concentration of Cu2＊ is 25 mg/L in the solution,and the concentration of res- in is 8 g/L,the removal rate of Cu^2＋ is up to 95.0%.

关 键 词：高吸水树脂 铜离子 吸附 

分 类 号：TQ32[化学工程—合成树脂塑料工业]