RT journal article
T1 Modelling of the anaerobic semi-continuous co-digestion of sewage sludge and 2 wine distillery wastewater
A1 Ripoll, Vanessa
A1 Agabo García, Cristina
A1 Solera del Río, María del Rosario
A1 Pérez García, Montserrat
A2 Tecnologías del Medio Ambiente
K1 anaerobic co-digestion
K1 wine distillery wastewater
K1 sewage sludge
K1 organic 40 loading rate (OLR)
K1 kinetic modelling
AB The semi-continuous mesophilic anaerobic co-digestion of sewage sludge and wine distillery wastewater was investigated. In this sense, the effects of reducing hydraulic retention time (HRT, from 20 d to 8 d) on the degradation of organic matter and methane production were determined. The experimental results showed that anaerobic co-digestion enhanced the biodegradability of the mixture in terms of VS and CODt (7-8% higher) for HRT = 8 d.  The methane productivity at HRT = 8 d (18.0 LCH4/kgVS·d), was also enhanced (30% higher) than those obtained in the control experiment. In addition, a mathematical kinetic model was proposed to determine the rate-limiting step of the process. Stoichiometric parameters obtained for SS:WDW (0.115 kgCH4/kgCOD) was higher than SS (0.094 kgCH4/kgCOD), which means that co-digestion increased the rate of consumption because more amount of biodegradable compounds. Kinetic study showed that anaerobic co-digestion favoured methane production rate enhancing the acetate consumption step and making methanogenesis the rate-limiting step in this process.
PB Royal Society of Chemistry
SN 2053-1419
YR 2020
FD 2020-05
LK http://hdl.handle.net/10498/23034
UL http://hdl.handle.net/10498/23034
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026