Impurity Shielding in Li/Al-LDH-Based Lithium Recovery from Produced Water via Activated Carbon Pretreatment.

ABSTRACT: Produced water (PW), a complex industrial wastewater byproduct, contains diverse organic contaminants and competing ions that hinder lithium recovery via lithium/aluminum-layered double hydroxide (Li/Al-LDH) adsorption. In this study, an activated carbon (AC)-based pretreatment strategy was developed to improve Li⁺ adsorption efficiency by mitigating impurity-induced interference. Two commercial ACs were screened across three PW sources, with optimal dosage and contact time determined for each. AC pretreatment effectively removed key organic compounds and divalent cations, enhancing the aqueous environment for lithium uptake. More importantly, it preserved the structural integrity of Li/Al-LDH, reducing degradation associated with coadsorbed organics. Adsorption experiments conf

SUBMITTER: Pan Y 

PROVIDER: S-EPMC12421675 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature