Graft copolymerization of acrylic acid on carboxymethylcellulose, using potassium persulfate as the inliator and N.N-methylenebisacrylamide as the cross-linking agent, was prepared from carboxymethylcellulose and acrylic acid by the method of copolymerization and cross-linking, and applied to Cr( VI) absorbefacienL The results show that the adsorption rate is more than 95% , when pH =4. 5, adsorbent period was 2 hours and concentration of Cr( Ⅳ) is 100 mg/L%以过硫酸钾为引发剂,N,N'-亚甲基双丙烯酰胺为交联剂,采用自由基聚合法使羧甲基纤维素与丙烯酸进行接枝共聚,制备了一种羧甲基纤维素接枝聚丙烯酸Cr(Ⅵ)吸附材料,研究了原料配比、pH、溶液浓度、吸附时间和温度对吸附性能的影响.结果表明:羧甲基纤维素与丙烯酸的质量比为3∶17、pH =4.5时复合材料表现出最佳吸附性能；吸附时间为2h时,吸附率大于95％.
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