Influence of microwave pre-treatment on sludge solubilization and pilot scale semi-continuous anaerobic digestion

- The effects of a microwave pre-treatment on anaerobic digestion were studied.
- The microwave treatment resulted in a significant solubilization of organic matter.
- Volatile fatty acid concentration increased during the treatment.
- A 50% increase in biogas production was observed for a retention time of 20 days.