Enhanced sludge anaerobic digestion by voltage-driven electron transfer of humic acids

Key Points

• Enhanced anaerobic digestion significantly increases gas production in sludge environments.
• The introduction of voltage-driven electron transfer improved methane yield by over 30% across varied conditions.
• Assessment of humic acids' role in electron transfer was conducted under multiple anaerobic scenarios.
• This approach may enable more efficient waste management in sludge treatment systems with broader applications.