From waste to restoration: Straw-derived artificial humic acid activated magnesium-modified biochar for efficient adsorption of Zn²⁺/Cd²⁺ and soil stabilization

Key Points

• Enhanced adsorption of Zn²⁺ and Cd²⁺ was achieved using magnesium-modified biochar from straw-derived humic acid.
• The modified biochar showed a 30% increase in adsorption capacity for cadmium compared to untreated biochar.
• Analysis involved a series of laboratory tests to measure adsorption efficiency and soil stabilization capability over various conditions.
• The findings may enable cost-effective soil remediation strategies using agricultural waste, promoting environmental sustainability.