Utilization of biochar derived from municipal sewage sludge as a raw material for fertilizer production
The study aimed to evaluate the potential use of sewage sludge–derived biochar as a soil amendment and nutrient source. Biochar was produced through torrefaction of municipal sewage sludge collected from a wastewater treat-ment plant located in the Upper Silesia region (Poland). The process was carried out at 250 °C fo...