Title:
Hydrogen and Methane Production by Codigestion of Organic Solid Waste and Waste Activated Sludge in a Discontinuous Process
Author(s):
Moreno-Andrade, I., Berrocal-Bravo, M.J., Pérez-Aragón, B.
Document(s):
Paper
Abstract:
The codigestion of different organic waste has been proposed to increase the hydrogen (H2) and methane (CH4) production rate in fermentation and methanogenic processes. The objective of this work was to evaluate the productivity of hydrogen in a dark fermentation process and methane in methanogenic process by a codigestion of waste activated sludge (purged sludge, PS) and organic solid waste of a restaurant (OSW). Different combinations of the residues were tested in batch experiments. The results showed that the maximal methane production was obtained using OSW without a codigestion. For the PS, the methane production increase as result of the OSW addition. The proportion of mixture formed by 90% of food residues and 10% of purge sludge, obtained the highest accumulated H2 production and volatile solids removal. In all cases the main volatile fatty acids was acetate. The results showed a feasibility to use codigestion of PS and OSW to increase the gas-biofuels (H2 and CH4) production.
Keywords:
bioenergy, biogas, hydrogen, methane, organic waste, anaerobic process
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas production and biogas upgrading
Event:
26th European Biomass Conference and Exhibition
Session:
2CV.7.14
Pages:
847 - 848
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2CV.7.14
Price:
FREE
