Synthesis of Spherical Composite CMC-LTO-EGDE-ME for Lithium Recovery from Geothermal Water

In this study, ethylene glycol diglycidyl ether (EGDE) and melamine (ME) were used to prepare a spherical composite material CMC-LTO-EGDE-ME through the strategy of cross-linking reaction of biodegradable sodium carboxymethyl cellulose (CMC) with Li2TiO3 (LTO) to improve the cycle stability of the a...

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Bibliographic Details
Published in:Journal of chemistry 2022-11, Vol.2022, p.1-11
Main Authors: Xie, Yingchun, Zhang, Yilin, Qin, Jiayu, Samadiy, Murodjon, Deng, Tianlong
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Biodegradability
Biopolymers
Calcium ions
Carboxymethyl cellulose
Cellulose
Consumption
Crosslinking
Environmental impact
Ethylene glycol
Ethylene glycol diglycidyl ether
Kinetics
Lithium
Lithium ions
Melamine
Methods
Molecular diffusion
Particle size
Recovery
Selectivity
Sodium
Sodium carboxymethyl cellulose
Titanium
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Summary:In this study, ethylene glycol diglycidyl ether (EGDE) and melamine (ME) were used to prepare a spherical composite material CMC-LTO-EGDE-ME through the strategy of cross-linking reaction of biodegradable sodium carboxymethyl cellulose (CMC) with Li2TiO3 (LTO) to improve the cycle stability of the adsorption-desorption for lithium recovery. In the geothermal water at 333.15°K, the adsorption capacity of the spherical composite adsorbent for lithium-ion is 12.02 mg/g, and the adsorption equilibrium time is 8 h. There is a good selectivity of Li+ (Kd = 3.7 × 103) and high separation factors between Li+ and Na+, K+, Cs+ and Ca2+ (between 39.17 and 181.97). Studies on adsorption kinetics and adsorption isotherm showed that composite material’s adsorption process was obtained from the pseudosecond-order kinetics and the molecular diffusion model. It was found that the composite material has broad applications in lithium recovery from geothermal water.
ISSN:2090-9063
2090-9071
DOI:10.1155/2022/6884947