Roles of biochar in anaerobic digestion and aerobic composting of organic wastes: status and perspectives

Key Points

• Biochar enhances microbial activity in anaerobic digestion, improving the breakdown of organic materials.
• In aerobic composting, biochar contributes to better aeration and nutrient retention, resulting in improved compost quality.
• Observational analysis of various studies shows that biochar can increase biogas production by up to 30% in anaerobic processes.
• Highlighting the need for further research, biochar's impact varies significantly based on feedstock types and environmental conditions.