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Selective adsorption of lithium from high Mg-containing brines using HxTiO3 ion sieve
Wang, Shulei1,2; Li, Ping1; Zhang, Xin3; Zheng, Shili1; Zhang, Yi1

The prepared titanium type lithium ion sieve HxTiO3 are characterized and tested as adsorbents for selective adsorption of lithium from high Mg-containing brine. The maximum adsorption capacities of Li+, Na+, K+, Ca2+ and Mg2+ ions onto HxTiO(3) reached 36.34, 1.93, 1.99, 2.58 and 3.53 mg/g, respectively, under the initial pH 8.8 at 25 degrees C for 24 h. Adsorption isotherms and kinetic analysis indicated that the adsorption of Li+ ions and other cations onto HxTiO(3) followed Langmuir isotherm model and pseudo-second order kinetic equation. A diffusion model simulation showed that the Li+ ions had the highest external diffusion coefficients (7.7 x 10(-2) cm s(-1)) while the other cations had small effect on the adsorption rate of Li+. The Biot number was > 100 signified that these ions adsorption onto HxTiO(3) were controlled by the internal diffusion. The separation factors (alpha) of Li+ over other cations were much > 1. In particular, the a value of Li+ over Mg2+ reached 4783, indicating the high selectivity for Li+. In addition, the Li+ ion adsorption capacity kept constant during the six adsorption-desorption cycles and molar ratio of Mg to Li of eluents was as low as 0.08, indicating that the HxTiO3 ion sieve could effectively extract Li+ from the enriched brine.

KeywordLithium Adsorption High Mg Containing Brine Hxtio3 Ion Sieve
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordManganese Oxide ; Aqueous-solutions ; Recovery ; Removal ; Adsorbent ; Sorption ; Li1.6mn1.6o4 ; Equilibrium ; Kinetics ; Carbon
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(51574212 ; U1403195)
WOS IDWOS:000416195200003
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLi, Ping
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99354 USA
Recommended Citation
GB/T 7714
Wang, Shulei,Li, Ping,Zhang, Xin,et al. Selective adsorption of lithium from high Mg-containing brines using HxTiO3 ion sieve[J]. HYDROMETALLURGY,2017,174(00):21-28.
APA Wang, Shulei,Li, Ping,Zhang, Xin,Zheng, Shili,&Zhang, Yi.(2017).Selective adsorption of lithium from high Mg-containing brines using HxTiO3 ion sieve.HYDROMETALLURGY,174(00),21-28.
MLA Wang, Shulei,et al."Selective adsorption of lithium from high Mg-containing brines using HxTiO3 ion sieve".HYDROMETALLURGY 174.00(2017):21-28.
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