铁铝复合材料对水中三价砷的去除效果研究  

Removal of Aqueous As( Ⅲ) by Fe-Al Bimetallic Particles

作　　者：孟成奇 魏建宏[2] 罗琳[1] 张嘉超[1] 周耀渝[1] 彭清辉[1] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128 [2]湖南农业大学生物科学技术学院,湖南长沙410128

出　　处：《矿冶工程》2017年第2期84-87,90,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划项目(2016YFC0403002);湖南省科技计划项目(2015WK3016)

摘　　要：合成了铁铝复合材料吸附剂,并比较了其与酸改活性炭、陶粒、类水滑石3种吸附材料对含砷废水中As(Ⅲ)的去除效果。结果表明,铁铝复合材料对水中三价砷的吸附效果好于其它3种吸附材料,吸附率大于89%。铁铝复合材料对水中As(Ⅲ)的吸附符合Langmuir等温模型和Freundlich等温模型,吸附作用力既涉及离子交换和静电吸引,又涉及表面配位作用。A kind of Fe-Al bimetallic adsorbent was prepared and compared with other three kinds of adsorbent,including the acid-modified activated-carbon,ceramsite and hydrotalcite-like compound,for investigating their effects on removal of As( Ⅲ) from As-containing wastewater. Results showed that Fe-Al bimetallic material had a better effect of As( Ⅲ) adsorption than other 3 adsorbents,with an adsorption efficiency over 89%. It is found the As( Ⅲ) adsorption by Fe-Al bimetallic material conforms to Langmuir isotherm model and Freundlich isotherm model,and the adsorption involves an ion exchange and electrostatic attraction,as well as surface coordination reaction.

关 键 词：三价砷 铁铝复合材料 吸附 水体 

分 类 号：X703[环境科学与工程—环境工程]