Mechanistic insights into Cr(VI) removal by acid modified biochar via coupled redox and complexation processes

Key Points

• To investigate the mechanisms of Cr(VI) removal using acid modified biochar.
• Analysis of biochar properties and modifications
• Evaluation of redox and complexation processes
• Assessment of chromium removal efficiency
• Biochar significantly reduces hexavalent chromium levels
• Cr(VI) removal primarily involves redox and complexation mechanisms
• Acid modification enhances biochar effectiveness in remediation