RT journal article
T1 Modelization of anaerobic processes during co-digestion of slowly biodegradable substrates
A1 Rubio Bernal, José Ángel
A1 García Morales, José Luis
A1 Romero García, Luis Isidoro
A1 Fernandez-Morales, Francisco Jesus
A2 Ingeniería Química y Tecnología de Alimentos
A2 Tecnologías del Medio Ambiente
K1 Anaerobic co-digestion
K1 Hydrolysis rate
K1 Inhibition
K1 Particulate substrate
AB The influence of the soluble substrates over the anaerobic processes has been extensively investigated, but little is known about the effects of particulate substrate. The biodegradation of these substrates starts with the hydrolytic step, this process is slower than the other ones involved in the biodegradation of particulate substrates and usually becomes the rate-limiting step. This study investigate the effect of the initial total solids (TS) concentration on the anaerobic co-digestion of two slowly biodegradable organic substrates. The wastes mixtures were prepared at different dilutions in the range from 10% to 28% TS. From these experiments it was observed that as TS concentration increased, the methane production decreased. These results were modelled and it was observed that neither hydrolysis nor fermentation stages controlled the methane production rate. Being a substrate inhibition event experienced at the methanogenic stage the responsible of the lower methane production when operating at high TS concentrations
YR 2020
FD 2020-07
LK http://hdl.handle.net/10498/29753
UL http://hdl.handle.net/10498/29753
LA eng
NO The authors wish to express their gratitude to the Spanish Ministry of Science and Innovation, the European Regional Development Fund (ERDF) and the Junta de Andalucía, specifically to PROBIOGAS Project PS-120000-2007-6 and for providing financial support. The authors would also like to thank the collaboration of the olive mill facility ‘‘Nuestra Señora de los Remedios’’ in this project and the kind contribution of Dra. Concepción Romero Barranco in the analytical determination of polyphenols carried out at the Instituto de la Grasa (CSIC-Spain)
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026