新生MnO_2对甲基橙的脱色作用研究  

Studies on Decolorization of Methyl Orange on the Fresh MnO_2

作　　者：马子川[1] 蒋兰宏[1] 霍庆[1] 张素坤[1] 董丽丽[1] 

机构地区：[1]河北师范大学化学系,河北石家庄050091

出　　处：《环境与开发》2001年第3期18-19,共2页Environment and Exploitation

基　　金：河北省科技攻关计划项目 (NO .995470 1 2D);河北省教育厅科研基金 (990 2 38)资助

摘　　要：以化学法合成的新生MnO2 作吸附剂 ,对水中甲基橙染料进行吸附脱色研究 ,探讨了影响吸附的因素和吸附机理 .结果表明 :新生MnO2 对甲基橙的吸附符合Langmuir吸附等温式 ,吸附速率大 ,吸附前溶液pH值是影响染料脱色效果的最主要因素 ,吸附后溶液pH值和温度影响程度较小 .在实验条件下可使甲基橙脱色率达 99%In this paper,the decolorization efficiency of an aqueous solution of methyl orange with the fresh MnO 2 as an adsorbent synthesizde by chemical process was studied.Influencing factors and the mechanism of adsorption were investigated in detail.The experimental results showed that the adsorption of dye on the fresh MnO 2 was conformed to the Langmuir isotherm equation and the tate of adsorption was high. pH values of solution before adsorption were the key effect on decolorization.whereas the effect of pH vallues of solution after adsorption ads well as temperature was not efficient.In experiment.the efficiency of decolorization was up to 99%

关 键 词：新生MNO2 甲基橙 吸附作用 脱色 吸附剂 染料废水 废水处理 二氧化钼 

分 类 号：X788[环境科学与工程—环境工程]