Contrasting microcystin-LR sorption and desorption capability of different farmland soils amended with biochar: Effects of biochar dose and aging time

Contaminants in biochar and suggested mitigation measures – a review

“…Available fractions of heavy metals are converted into stable fractions with low risk of leaching or plant uptake following pyrolysis [16,85,104]. Although PTEs are non-destructible and will accumulate in soil after repeated soil application, the release of heavy metals during aging in soil was low, in particular when high temperature biochar was applied to soil of pH < 7, the typical pH of agricultural soils [105]. Therefore, PTEs in biochar will also unlikely pose risk for leaching or plant uptake in the future.…”