Comparison of different mixing phenomena in anaerobic digestion using food waste and sewage treatment plant for green biofuel through simulations of velocity contours

Latha ShanmugamDepartment of Applied Science and Technology, Alagappa College of Technology, Anna University, Chennai, TamilNadu, India

Velraj RamalingamDepartment of Mechanical Engineering Anna University, Institute for Energy Studies, Chennai, TamilNadu, India

Shanmugam PalaniyandiEnvironmental Engineering Department, CSIR-Central Leather Research Institute, Chennai, TamilNadu, India

Sivanesan SubramanianDepartment of Applied Science and Technology, Alagappa College of Technology, Anna University, Chennai, TamilNadu, IndiaCorrespondence[email protected]

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.

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Acknowledgement

This work was supported by the Senior Research Fellowship [The Ministry of New and Renewable Energy, Government of India].

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Comparison of different mixing phenomena in anaerobic digestion using food waste and sewage treatment plant for green biofuel through simulations of velocity contours

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Comparison of different mixing phenomena in anaerobic digestion using food waste and sewage treatment plant for green biofuel through simulations of velocity contours

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