文献类型：期刊文献

英文题名：Mg-Al Hydrotalcites Intercalated by Ethylenediaminetetraacetic Acid for Ni(II) Removal from Aqueous Solution

作者：Liu, Guanhao[1];Yang, Jingyi[1];Xu, Xinru[1];He, Zhilan[1]

机构：[1]East China Univ Sci & Technol, Res Inst Petr Proc, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2019

卷号：64

期号：12

起止页码：5838

外文期刊名：JOURNAL OF CHEMICAL AND ENGINEERING DATA

收录：;EI(收录号：20194607672928);WOS:【SCI-EXPANDED(收录号:WOS:000503115000084)】；

语种：英文

外文关键词：Aluminum alloys - Chemicals removal (water treatment) - Heavy metals - Adsorption - Binary alloys - Metal ions - Nickel compounds - Water pollution

摘要：High-efficient-adsorbents-layered double hydroxides (LDH) intercalated by carbonate ion and ethylenediaminetetraacetic acid (EDTA) ion were synthesized by the coprecipitation method for the removal of Ni2+ in the aqueous solution. MgAl EDTA LDH had a better adsorption performance than MgAl-CO3-LDH due to the larger specific surface area and strong trapping for heavy metal ions of EDTA. Ni(II) adsorption on the two kinds of LDH conformed to the pseudo-second-order kinetic model. The Langmuir isothermal adsorption model was more suitable to describe the adsorption isotherm than the Freundlich model. The maximum adsorption capacity of MgAl EDTA LDH and MgAl-CO3-LDH for Ni(II) was 108.2 and 23.47 mg/g, respectively. This work may offer ideas for the preparation and application of excellent adsorbents in the heavy metal removal from polluted water.