Calcium/iron co-modified biochar for enhanced arsenic removal: Differential mechanisms for As(III) and As(V) and effective soil remediation

Key Points

• The study demonstrates enhanced arsenic adsorption using calcium and iron-modified biochar for both As(III) and As(V).
• Results show a 30% greater arsenic removal efficiency when using modified biochar compared to unmodified versions.
• Analysis utilized advanced adsorption techniques to compare the mechanisms involved in arsenic removal from soil.
• These findings support the potential of biochar modifications for effective soil remediation strategies against arsenic contamination.