Adsorption of lithium ions from aqueous solution by magnetic aluminum-based adsorbents

被引：0

作者：

Qin, Yaru ^{[1
]}

Yang, Tingfei ^{[1
]}

Shi, Chenglong ^{[1
,2
]}

Liu, Bing ^{[3
]}

机构：

[1] Qinghai Minzu Univ, Sch Chem & Chem Engn, Xining, Qinghai, Peoples R China

[2] Tianjin Univ, Sch Sci, Dept Chem, Tianjin, Peoples R China

[3] North China Univ Sci & Technol, Coll Chem Engn, Tangshan, Hebei, Peoples R China

来源：

PLOS ONE | 2023年 / 18卷 / 12期

关键词：

LAYERED DOUBLE HYDROXIDES; STRUCTURAL STABILITY; LI+ ADSORPTION; RECOVERY; PERFORMANCE; SORPTION; BRINE; SIEVE; ORDER;

D O I：

10.1371/journal.pone.0295269

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Magnetic aluminum-based adsorbents (MLDHs) were prepared with a coprecipitation method and used to separate lithium ions from the aqueous solutions. In static adsorption experiment, the adsorption capacity of MLDHs for lithium ions reached 8.22 mg/g. In a mixed solution of various metal ions, the adsorbents exhibited higher selectivity for lithium ions. Kinetic studies indicated that the adsorption process conformed to a pseudo-second-order model. The experimental data were fitted with nonlinear regression using commonly used adsorption isotherms. It was found that the adsorption isotherm process could be described by the Langmuir model. In addition, the thermodynamic parameters revealed that the adsorption of lithium was a spontaneous endothermic process.

引用

页数：21

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