用改性赤泥吸附废水中的六价铬

被引:22
作者
韩毅
王京刚
唐明述
机构
[1] 北京化工大学化学工程学院
[2] 南京工业大学材料学院 北京
[3] 北京南京工业大学材料学院
[4] 江苏南京
关键词
赤泥; 氯化铁; 六价铬; 改性; 吸附; 综合利用;
D O I
暂无
中图分类号
X703 [废水的处理与利用];
学科分类号
083002 ;
摘要
用国内烧结法产生的赤泥作主要原料,以氯化铁为改性剂制得改性赤泥,用其吸附含铬废水中的重铬酸根阴离子。当废水中六价铬的质量浓度为80mg/L时,在环境温度为30℃、改性赤泥投加量为10g/L、pH为2左右的酸性环境中,2h达到吸附平衡,去除率可达96.18%。并且利用Langmuir等温式和Freundlich等温式对其吸附机理进行了探讨,结果表明,氯化铁改性赤泥对重铬酸根阴离子的吸附是通过物理吸附和化学吸附的协同作用来进行的。
引用
收藏
页码:132 / 136
页数:5
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