A magnetic adsorbent with metal-organic framework based on ammonium phosphomolybdenum heteropoly tungstate (AWP): Selective adsorption of symbolscript and symbolscript from aqueous resources and stripping with ammonium salts

被引：20
作者：
Wang, Yanping [1 ,2 ,3 ]
Li, Kexin [1 ,2 ,3 ]
Ma, Liang [1 ,2 ,3 ]
Fang, Dezhen [1 ,2 ,3 ]
Lu, Miao [1 ,2 ,3 ]
Ye, Xiushen [1 ,2 ]
Liu, Haining [1 ,2 ]
Zhang, Huifang [1 ,2 ]
Tan, Xiaoli [1 ,4 ]
Wu, Zhijian [1 ,2 ]
机构：
[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sal, Xining 810008, Qinghai, Peoples R China
[2] Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Qinghai, Peoples R China
[3] Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
[4] North China Elect Power Univ, Sch Environm & Chem Engn, Beijing 102206, Peoples R China
来源：
HYDROMETALLURGY | 2023年 / 216卷
关键词：
Magnetic metal-organic framework; Phosphomolybdenum-tungsten heteropoly acid; Adsorption; Rubidium; Cesium; CARBON NANOTUBE; DYE REMOVAL; NANOCOMPOSITES SYNTHESIS; WASTE-WATER; ISOTHERM; SINGLE; ZIF-8; DECOLORIZATION; OPTIMIZATION; NANOPARTICLE;
D O I：
10.1016/j.hydromet.2022.106011
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In the process of in situ synthesis of the metal-organic framework ZIF-8, the active component ammonium phosphomolybdenum heteropoly tungstate (AWP) was introduced and magnetized to obtain a composite mag-netic adsorbent (Fe3O4@ZIF-8@AWP). The adsorption isotherms of Fe3O4@ZIF-8@AWP on symbolscript and symbolscript conform to the Langmuir model, with maximum adsorption of 0.78 and 0.85 mmol g+ 1 of symbolscript and symbolscript respectively. The ion exchange mechanism of symbolscript and symbolscript adsorption was elucidated in detail by experimental data and characterization analysis. Remarkably, the adsorbent can retain more than 86% of the adsorption ca-pacity after 5 consecutive adsorption-desorption cycles. In addition, the developed adsorbent has good saturation magnetization (54.3 emu g+ 1) and can be quickly and easily separated from symbolscript and symbolscript solutions after the adsorption process. The adsorbent can be used for the adsorption of symbolscript and symbolscript from Nanyi Mountain oil field brine which indicates that it has good prospects for application in separation of symbolscript and symbolscript from liquid re-sources in the future.
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页数：12
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