Fundamental insights into gallium leaching for sustainable electronic waste recovery.

ABSTRACT: This study systematically concerns the leaching behavior and dissolution kinetics of gallium (Ga). The objective was to identify sustainable leaching agents by incorporating organic acid reagents. Using a novel approach involving pH-adjusted experiments, the findings elucidated the dissolution behavior, delineating acidolysis and complexolysis. The screening results demonstrated the efficacy of oxalic acid (10 mM), which extracted 1105.2 ± 61.4 mg/L of Ga at pH 1.2. Dissolution kinetics based on the shrinking core model (SCM) revealed a synergistic mechanism governed by film diffusion and surface chemical reaction control, with chemical reaction control dominating at higher temperatures. One-factor-at-a-time (OFAT) experiments clarified the influence of experimental parameters on Ga leachi

SUBMITTER: Erkmen AN 

PROVIDER: S-EPMC12675773 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature