Biomass conversion of waste oyster shells into calcium phosphate/carbonate adsorbents for efficient manganese removal

Biofuels Bioproducts and Biorefining, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract The effective removal of manganese (Mn 2+ ) from water is essential to reduce pollution and protect public health. This study focused on developing a low‐cost adsorbent using Pacific milk oyster shells, which were treated through preheating phosphatization. process resulted in mixture calcium phosphate carbonate with improved adsorption properties. We evaluated the characteristics waste shells techniques such as scanning electron microscopy (SEM), X‐ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, analysis. Phosphatized (POS) showed peaks both hydroxyapatite calcite. material demonstrated high capacity 76.92 mg g −1 , outperforms many natural adsorbents. kinetics best explained by pseudo‐second‐order (PSO) model, indicating that chemisorption primary mechanism at work. Given its cost‐effectiveness, efficiency, environmental sustainability, this appears be promising solution for treatment applications. Future studies should investigate performance real wastewater systems explore possibilities regeneration reuse.

Language: Английский

Enhanced removal and recovery of heavy metals from acid mine drainage using nFeS@GS biosynthesized by Geobacter sulfurreducens

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114687 - 114687

Published: Nov. 4, 2024

Language: Английский