Effect of iron-loaded biochar on medium-chain fatty acid production from waste activated sludge.
Conductive materials can enhance medium-chain fatty acid (MCFA) production from waste activated sludge (WAS), but the influence of their addition timing remains unclear. Here, a biochar-supported zero-valent iron composite (ZVI/BC) was added either before acidification (the AC group) or before chain elongation (CE; the...