改性聚丙烯腈纤维对铅镉汞离子的吸附性能研究  

ADSORPTION PROPERTIES OF MODIFIED POLYACRYLONITRIL FIBER ON Pb(Ⅱ),Cd(Ⅱ),Hg(Ⅱ) IONS

作　　者：吴之传[1] 陶庭先[1] 高红军[1] 吴琦[1] 孙志娟[1] 

机构地区：[1]安徽机电学院生化工程系,安徽芜湖241000

出　　处：《水处理技术》2003年第2期92-95,共4页Technology of Water Treatment

基　　金：安徽省教委自然科学基金资助课题(99j10032)

摘　　要：以改性聚丙腈纤维(简称改性纤维,用L表示)为吸附剂,对水溶液中的重金属离子Pb2+、Cd2+、Hg2+进行螯合吸附。实验证明,L对它们有很强的吸附能力,通过实验确定出L对各离子吸附的最佳条件参数:温度、时间、pH值、离子浓度等;并发现L对Pb2+、Hg2+有累积吸附作用;吸附后的纤维可以反复再生使用,并找出再生的最佳条件。而且,在一定的浓度范围内三种离子的吸附都能符合Freundlich型等温方程式。The modified polyacrylonitril fiber(L for short hereafter) was used as adsorbent and chelating adsorption is carried out with L for the heavy metallic ions Pb2+, Hg2+, Cd2+ in aqueous solution. The experiment showed that L had very strong ability to adsorb these ions. Through experiment, the parameters under the optimum condition unders which L adsorbed various ions: temperature, time, pH value, ion concentration can be determined. It was also discovered that L had accumulative adsorption action on Pb2+, Hg2+, the fiber after adsorbing can be used repeatedly and the optimum condition of regeneration can be found out. Futhermore, within a certain concentration, the adsorption of the three kinds of ions is in conformity with the Freundlich isotherm type equalion.

关 键 词：改性纤维 重金属离子 吸附 冉生 聚丙烯腈纤维 铝 镉 汞 

分 类 号：X703.5[环境科学与工程—环境工程] O647.32[理学—物理化学]