Research on Synchronous Synthesis of Schwertmannite for Removal of Pb2+ from Acidic Wastewater
Year: 2025
Type: article
Abstract: Schwertmannite (Fe8O8(OH)8−2x(SO4)x), an iron oxyhydroxysulfate mineral prevalent in acidic mining environments, demonstrates exceptional heavy metal adsorption capacity owing to its high surface area and abundant functional groups. This study developed a novel one-step synthesis method that simultaneously generates schwertmannite and removes Pb2+ from aqueous solutions, contrasting with conventional two-step approaches. Systematic investigation of operational parameters revealed that Pb2+ removal efficiency exceeded 98% across concentrations of 0~300 mg·L−1, with optimal performance at nSch:nPb ratios ≥ 2, pH 3.0~6.0, and 35 °C. Characterization studies identified four primary removal mechanisms: electrostatic adsorption, ion exchange, coordination complexation, and coprecipitation. The in situ method demonstrated significant advantages in processing efficiency, removal stability, and environmental sustainability compared to traditional approaches.
Source: Crystals
Authors: Huijie Zhu, Shuai Fu, Huiyong Zhang, Xi Wu, Jinyi Han, Xiaolin Ma, Jingtao Rong, Sixu Chen, Guang Chen, Yuxiang Li, Jianchao Man, Zhiqun Ma
Institution: Luoyang Institute of Science and Technology
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,534
Awards: G4469821913, G741154702
OpenAlex ID: W4415683899