Adsorption performance and mechanism of Li⁺ from brines using lithium/aluminum layered double hydroxides-SiO₂ bauxite composite adsorbents.

ABSTRACT: A combined method of solid-phase alkali activation and surface precipitation was used to prepare the lithium/aluminum layered double hydroxides-SiO₂ loaded bauxite (LDH-Si-BX) and applied to adsorb Li⁺ in brines. In the study, various characterization techniques such as SEM, XRD, BET, Zeta potential, and x-ray photoelectron spectroscopy (XPS) were applied to characterize and analyze the adsorbents. The adsorption-desorption performance of LDH-Si-BX for Li⁺ in brines was systematically investigated, including adsorption temperature, adsorption time, Li⁺ concentration, and regeneration properties. The results indicated that the adsorption kinetics were better fitted by the pseudo-second-order model, whereas the Langmuir model could match the adsorp

SUBMITTER: Qian C 

PROVIDER: S-EPMC10634247 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature