中文摘要：

以腈纶废丝为原料，二甲基甲酰胺和分散剂溶液分别为溶剂和非溶剂，通过相转换法制得聚丙烯腈珠体，再采用微波辐射法对珠体进行改性，制得一种多功能球形螯合吸附剂SPDA，并对SPDA进行理化性能表征。研究表明，SPDA含有酰胺基和咪唑基等多种特征官能团，改性的最佳条件为单体和珠体质量比为7：1，催化剂质量占珠体质量14．0％，乙二醇和珠体质量比为7：5，微波功率为640W，辐射反应5min。采用静态吸附法研究SPDA对Cr（VI）的吸附效果，当pH值为4，Cr（VI）的初始质量浓度为120mg／L，吸附时间为2h，吸附温度为30℃时，去除率达到96．2％，平衡吸附容量可达38．5mg／g。

英文摘要：

The spherical polyacrylonitrile beads were prepared via phase inversion method usting DMF as solvent and dispersant solution as non-solvent and waste polyacrylonitrile fibre as raw material. Then the spherical PAN beads were used to prepare a multifunctional spherical chelation adsorbent, denoted as SPDA, under mi- crowave assistant conditions. Besides, the physical and chemical properties were also studied. The results indi- cated SPDA contained amide and imidazolyl groups. And the optimum modified conditions included 7 ： 1 of the mass ratio of monomer and beads, 14 ： 100 of the mass ratio of catalyst and beads, 7 ： 5 of the mass ratio of EG and beads, 640W of the microwave power and 5mins of the radiation time. Additi6nally, study was also conduc- ted regarding the adsorption of Cr（VI） on SPDA by static adsorption experiments. The removal percentage and equilibrium adsorption capacity of SPDA could reach 96.2% and 38.5mg/g under such conditions as 4 of the so- lution pH, 120mg/L of Cr（VI） concentration, 2h of the adsorption time and 30~C of the adsorption tempera- ture.