Preprint Review Version 1 This version is not peer-reviewed

Disintegration of Wastewater Activated Sludge (WAS) for Improved Biogas Production: A Mini Review

Version 1 : Received: 16 November 2018 / Approved: 19 November 2018 / Online: 19 November 2018 (09:57:56 CET)

A peer-reviewed article of this Preprint also exists.

Wacławek, S.; Grübel, K.; Silvestri, D.; Padil, V.V.; Wacławek, M.; Černík, M.; Varma, R.S. Disintegration of Wastewater Activated Sludge (WAS) for Improved Biogas Production. Energies 2019, 12, 21. Wacławek, S.; Grübel, K.; Silvestri, D.; Padil, V.V.; Wacławek, M.; Černík, M.; Varma, R.S. Disintegration of Wastewater Activated Sludge (WAS) for Improved Biogas Production. Energies 2019, 12, 21.

Journal reference: Energies 2019, 12, 21
DOI: 10.3390/en12010021

Abstract

Due to rapid urbanization, the quantity of wastewater treatment plants (WWTP) has increased, and with it the amount of waste generated by them. Sustainable management of this waste can lead to the creation of energy-rich biogas through the fermentation process. This review presents recent advances in the anaerobic digestion process resulting in greater biogas production. Disintegration techniques for enhancing waste activated sludge fermentation can be generally partitioned into biological, physical and chemical, each of which are covered in this review. These disintegration techniques were compared mainly in terms of their biogas yield. It was found that ultrasonic and microwave disintegration provides the highest biogas yield (>500%); however, they are also the most energy demanding (>10,000 kJ kg-1 total solids).

Subject Areas

biogas; renewable energy; anaerobic digestion; waste activated sludge; disintegration

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