Water, Год журнала: 2025, Номер 17(7), С. 998 - 998

Опубликована: Март 28, 2025

Soil plays a critical role as natural barrier in mitigating the infiltration of industrial-derived phosphate pollution into groundwater, with its retention capacity governed mainly by mineralogical composition. In this study, three soil samples were collected from Huangmailing mine area, and minerals responsible for identified through batch adsorption experiments, chemical extraction, spectroscopy analyses. The distribution within was further quantified using geochemical model. results indicate that soils to ranges 0.193 0.217 mg/g. Adsorption equilibrium reached at 750 min, conforming intra-particle diffusion kinetic Elevated temperatures facilitate adsorption. Under acidic neutral conditions, approximately 80–90% is adsorbed onto iron oxides, primarily inner-sphere surface complexation, thus unaffected ionic strength. alkaline mechanism dominated release exchangeable Ca2+ vermiculite biotite, well precipitation hydroxyapatite. Notably, pH which shifts decreased increasing content layered silicate concentration cations solution. Our study underscores distinct roles effective under different conditions highlights significance conditions. Based on these findings, it recommended sites favorable characteristics tailored phosphate-containing wastewater be prioritized phosphorus industries. This also assesses cost-effectiveness adding industrial agricultural applications. findings can provide scientific basis preventing groundwater areas.

Язык: Английский