RT journal article
T1 Biomethane production improvement by enzymatic pretreatments and enhancers of sewage sludge anaerobic digestion
A1 Agabo García, Cristina
A1 Pérez García, Montserrat
A1 Rodríguez-Morgado, Bruno
A1 Parrado, Juan
A1 Solera del Río, María del Rosario
A2 Tecnologías del Medio Ambiente
K1 Sewage sludge
K1 BMP
K1 Enzymatic pre-treatment
K1 Anaerobic digestion enhancer
K1 Sewage sludge fermentation
AB Enzymatic hydrolysis is recognised as an effective pre-treatment for increasing biodegradability of sludge. In this work, isolated commercial enzymes as well as in-situ enzymes producer bacteria were used respectively as enhancers and pre-treatments of sewage sludge. Biodegradability of sample as well as biomethane potential production were studied. Results showed that depuration efficiencies in terms of CODs (73.5-85.5 %) and TVS (28.5-42.7 %) were more than twice the control value. In addition, pre-treated samples as well as enhanced samples with enzymes generated more biomethane than control. The optimal ones, were those with the isolated proteases (P) and with bacteria (Bacillus licheniformis) treatment in-situ (F), producing a total volume of 72.4 ± 2.62 ml CH4 and 114 ml ± 0.46 CH4, respectively, increasing the biogas volume in 3.65 and 5.77 times respectively compared with control.
PB ELSEVIER
SN 0016-2361
YR 2019
FD 2019-11
LK http://hdl.handle.net/10498/22439
UL http://hdl.handle.net/10498/22439
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 22-sep-2026