活性炭负载壳聚糖吸附Hg^(2+)的研究  

Studies on the Adsorption of Hg^(2+) by Activated Carbon-Chitosan Compound Adsorbent

作　　者：李路华[1] 张文艳 史训立[1] 贺会兰[1] 高爱舫[1] 

机构地区：[1]石家庄经济学院数理学院,石家庄050031 [2]邢台广播电视大学法律系,河北邢台054000

出　　处：《湖北农业科学》2013年第5期1027-1029,共3页Hubei Agricultural Sciences

基　　金：石家庄经济学院自然科学研究项目(XN201004);河北省高等学校科学技术研究优秀青年基金项目(Y2011110)

摘　　要：将脱乙酰度94.2%的壳聚糖溶解于0.5%醋酸溶液中,配制成0.5%的壳聚糖溶液,然后按照壳聚糖与活性炭质量比1∶50使壳聚糖负载在活性炭上,制成固体复合吸附剂,用于去除污水中汞离子(Hg2+)。试验表明,水中Hg2+含量100 mg/L、pH 3.7、吸附时间25 min、吸附剂用量为2.5 g/L时,水样中Hg2+的去除率为99.56%,与只用活性炭吸附相比提高了17.22个百分点。Chitosan with 94.2% of deacetylation degree was dissolved into 0.5% acetic acid to get 0.5% chitosan-acetic acid solution.Then solid carbon-chitosan compound adsorbent was made with mass ratio of chitosan to carbon at 1∶50 to remove Hg2+ in waste water.The results indicated that when the Hg2+ content in water was 100 mg/L,pH at 3.7,the adsorption time was 25 min and the adsorbent dosage was 2.5 g/L,the removal rate of Hg2+ was 99.56%;which increased by 17.22 percentage point compared with using activated carbon only.

关 键 词：活性炭负载壳聚糖 汞离子 吸附 

分 类 号：S[农业科学]