%0 Journal Article
%T Enhanced fluoride removal from aqueous solution by mixed oxides derived from Mg/Al/Fe hydrotalcite<br>Mg/Al/Fe复合氧化物吸附去除水体中氟化物的研究
%A Kong Chuipeng
%A Nie Yulun
%A Hu Chun
%A <br>孔垂鹏
%A 聂玉伦
%A 胡春
%J 环境工程学报
%D 2010
%I 
%X In this study, Mg/Al/Fe hydrotalcites (MAF) with different iron content were prepared by hydrothermal method. Based on the characterization of XRD, there existed a suitable iron ratio and the layer structure would be destroyed with excessive iron. The morphology and property of the mixed oxides derived from MAF (CMAF) were characterized by SEM and BET. The adsorption of fluoride on CMAF was also investigated. In comparison with CMA (iron content was 0), CMAF exhibited a higher efficiency toward fluoride removal (the maximum adsorption capacity is 75.2 mg/g). Langmuir isotherm was found more suitable to describe the adsorption process. Moreover, the structure of CMAF shifted to layer structure after fluoride adsorption. The result indicates that fluoride has intercalated the layer structure of hydrotalcite, leading to higher efficiency of fluoride removal.
%K hydrotalcite
%K fluoride
%K adsorption
%K reconstruction<br>水滑石
%K 氟离子
%K 吸附
%K 重整
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=91176412181910AD48FF2030B81EF2C5&yid=140ECF96957D60B2&vid=E158A972A605785F&iid=CA4FD0336C81A37A&sid=4DB1E72614E68564&eid=DDD31293A7C7D057&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=15