Shoot two birds with one stone: chemical and biological mechanisms of calcium-phosphorus modification for enhancing carbon sequestration and heavy metal stabilization of biochar.
Developing biochar amendments that couple heavy-metal stabilization with soil carbon preservation is essential for restoring contaminated agricultural soils and upgrading crop residues. Here, calcium-phosphorus co-modified straw biochar (CPBC) was fabricated via impregnation-assisted secondary pyrolysis to realize indi...