Iron (Fe) metal is often found in well water and at high concentrations can degrade water quality. This study synthesized a Biochar/MnFe₂O₄/Ag₃PO₄ composite, evaluated its characteristics, Fe adsorption capacity, and applied it to well water and antibacterial tests. Biochar was synthesized through pyrolysis of rice husk, MnFe₂O₄ was modified through coprecipitation, and followed by …