Digital research data from: Magnesium activation affects the properties and phosphate sorption capacity of poultry litter biochar

This is digital research data corresponding to a published manuscript, Magnesium activation affects the properties and phosphate sorption capacity of poultry litter biochar. Biochar 5:64. https://doi.org/10.1007/s42773-023-00263-5. 
Biochars with a high affinity for phosphorus (P) are promising soil amendments for reducing P in agricultural runoff. Poultry litter (PL) is an abundant biochar feedstock. However, PL-derived biochars are typically high in soluble P and therefore require chemical modification to become effective P sorbents. This study investigated the effect of magnesium (Mg) activation on extractable P (EP) and P sorption capacities of PL-derived biochars. Biochar was produced at 500–900 °C from PL activated with 0–1 M Mg. Three differentially aged PL feedstocks were evaluated (1-, 3–5-, and 7–9-year-old).Â