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Updated: Jun 16, 2026

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production
Published on: June 15, 2014
Use of hydrodynamic disintegration to accelerate anaerobic digestion of surplus activated sludge
Klaudiusz Grübel1, Alicja Machnicka
1Institute of Environmental Protection and Engineering, University of Bielsko-Biala, Willowa 2 Str., 43-309 Bielsko-Biala, Poland. kgrubel@ath.bielsko.pl
Abstract:
Hydrodynamic disintegration of activated sludge resulted in organic matter and polymers transfer from the solid phase into the liquid phase. Disintegration by hydrodynamic cavitation had a positive effect on the degree and rate of excess sludge anaerobic digestion. Also, addition of a part of anaerobic digested sludge containing adapted microorganisms resulted in acceleration of the process. The disruption of cells of foam microorganisms and addition to the digestion process led to an increase of biogas production.
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