RT journal article
T1 Thermophilic and mesophilic temperature phase anaerobic codigestion (TPAcD) compared with single-stage co-digestion of sewage sludge and sugar beet pulp lixiviation
A1 Montañes Alonso, Rocío
A1 Solera del Río, María del Rosario
A1 Pérez García, Montserrat
A2 Tecnologías del Medio Ambiente
K1 Two-phase anaerobic co-digestion
K1 Sewage sludge
K1 Sugar beet pulp lixiviation
K1 Microbial activity
AB The performance of temperature phase anaerobic co-digestion (TPAcD) for sewage sludge and sugar beetpulp lixiviation (using the process of exchanging the digesting substrate between spatially separatedthermophilic and mesophilic digesters) was tested and compared to both single-stage mesophilic andthermophilic anaerobic co-digestion. Two Hydraulic Retention Times (HRT) were studied in the thermophilic stage of anaerobic digestion in two temperature phases, maintaining the optimum time of themesophilic stage at 10 days, obtained as such in single-stage anaerobic co-digestion. In this way, weobtained the advantages of both temperature regimes.Volatile solids removal efficiency from the TPAcD system depended on the sludge exchange rate, butfell within the 72.6e64.6% range. This was higher than the value of 46.8% obtained with single-stagethermophilic digestion and that of 40.5% obtained with mesophilic digestion. The specific methaneyield was 424e468 ml CH4 per gram of volatile solids removed, similar to that of single-stage mesophilicanaerobic digestion. The increase in microbial activity inside the reactor was directly proportional to theorganic loading rate (OLR) (or inversely proportional to the HRT) and inversely proportional to the size ofthe microbial population in single-stage anaerobic co-digestion systems.
PB ELSEVIER
SN 0961-9534
YR 2016
FD 2016
LK http://hdl.handle.net/10498/22444
UL http://hdl.handle.net/10498/22444
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026