ABSTRACT
Three-dimensional computational fluid dynamics models have been developed for the comparison of diffuser-based biogas recirculation and impeller mixed anaerobic reactors with unmixed reactors for food waste co-digested with sewage treatment plant sludge for enriched with 60–73% of biogas. Enhanced biogas yield was observed in diffuser mixing, intensity of 2 L/min (0.28–1.180 L/g VSr), compared to impeller mixing of 200 rpm. pH of 5.94 from the feed slurry pH range of 7.0–8.4 shows sheathe-broken microbial SEM structure.
Acknowledgement
This work was supported by the Senior Research Fellowship [The Ministry of New and Renewable Energy, Government of India].