PMID- 22940352 OWN - NLM STAT- MEDLINE DCOM- 20130219 LR - 20171116 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 123 DP - 2012 Nov TI - Effect of hydrothermal pretreatment of sunflower oil cake on biomethane potential focusing on fibre composition. PG - 424-9 LID - S0960-8524(12)01165-0 [pii] LID - 10.1016/j.biortech.2012.07.111 [doi] AB - The aim of this study was to elucidate the effect of hydrothermal pretreatment at 25, 100, 150 and 200 degrees C on fibre composition and the biomethane potential of sunflower oil cake (SuOC). An increase in pretreatment temperature from 25 to 200 degrees C caused a decrease in hemicellulose content in the solid pretreated fraction from 13 to 6% while the lignin content increased by 16%. Soluble compounds also increased with temperature. Digestion of solid fractions from pretreatments at 25, 100, 150 and 200 degrees C in batch assays at 35+/-1 degrees C resulted in methane yields of 114+/-9, 105+/-7, 82+/-7 and 53+/-8mL CH(4) g(-1)COD(added), respectively. The corresponding methane yields for the liquid fractions were 276+/-6, 310+/-4, 220+/-15 and 247+/-10mL CH(4) g(-1)COD(added), respectively. Therefore the overall methane yield was highest for SuOC pretreated at 100 degrees C; however, this value was only 6.5% higher than that achieved after pretreatment at 25 degrees C. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Fernandez-Cegri, Victoria AU - Fernandez-Cegri V AD - Instituto de la Grasa, Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Padre Garcia Tejero, 4, 41012 Seville, Spain. FAU - Angeles De la Rubia, M AU - Angeles De la Rubia M FAU - Raposo, Francisco AU - Raposo F FAU - Borja, Rafael AU - Borja R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120808 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Biofuels) RN - 0 (Plant Oils) RN - 0 (Sunflower Oil) RN - 059QF0KO0R (Water) RN - OP0UW79H66 (Methane) SB - IM MH - Batch Cell Culture Techniques MH - Biofuels/*analysis MH - Biotechnology/*methods MH - Kinetics MH - Methane/*analysis MH - Plant Oils/*chemistry MH - Sunflower Oil MH - *Temperature MH - Water/*chemistry EDAT- 2012/09/04 06:00 MHDA- 2013/02/21 06:00 CRDT- 2012/09/04 06:00 PHST- 2012/01/06 00:00 [received] PHST- 2012/06/30 00:00 [revised] PHST- 2012/07/30 00:00 [accepted] PHST- 2012/09/04 06:00 [entrez] PHST- 2012/09/04 06:00 [pubmed] PHST- 2013/02/21 06:00 [medline] AID - S0960-8524(12)01165-0 [pii] AID - 10.1016/j.biortech.2012.07.111 [doi] PST - ppublish SO - Bioresour Technol. 2012 Nov;123:424-9. doi: 10.1016/j.biortech.2012.07.111. Epub 2012 Aug 8.