Spinel H4Ti5O12 nanotubes for Li recovery from aqueous solutions: Thermodynamics and kinetics study, By Arash Khosravi

Research

Title	Spinel H4Ti5O12 nanotubes for Li recovery from aqueous solutions: Thermodynamics and kinetics study
Type	Article
Keywords	Lithium adsorption H4Ti5O12 Ion-sieve Adsorption isotherms Kinetics study Statistical analysis
Journal	Journal of Environmental Chemical Engineering
DOI	https://doi.org/10.1016/j.jece.2020.104679
Researchers	Ali Shoghi (First researcher) , Shahnaz Ghasemi (Second researcher) , Masoud Askari (Third researcher) , Arash Khosravi (Fourth researcher) , Atefeh Hasan-zadeh (Fifth researcher) , Ali Asghar Alamolhoda (Not in first six researchers)

Abstract

In this study, H4Ti5O12 nanotubes have been prepared as Li+ adsorbent by acid treatment of Li4Ti5O12 nanotubes. Li4Ti5O12 nanotubes were synthesized via a hydrothermal method in which TiO2(B) nanNotubes were used as a precursor. The prepared Li-ion sieve showed a significant high ion-exchange capacity (160.6 mgg−1) for lithium ions due to its large specific surface area of 115.4 m2 g-1 compared to the other related studies. The kinetics and isotherm investigation revealed that the pseudo-second-order equation well described the adsorption kinetics, and the Langmuir model well fitted the isotherm data. Furthermore, the low value of adsorption energy obtained from the Dubinin-Radushkevitch (D-R) isotherm suggests that the adsorption process is dominated by physisorption. Statistical analysis of experimental data using elementary statistical techniques demonstrated an acceptable agreement between experimental data and the proposed mathematical model. Overall, results show H4Ti5O12 nanotube's capability as an attractive medium for large scale lithium extraction from aqueous resources.