Title of article :
Evaluation of the hydrolytic–acidogenic step of a two-stage mesophilic anaerobic digestion process of sunflower oil cake
Author/Authors :
De La Rubia، نويسنده , , M.A. and Raposo، نويسنده , , Luisa F. and Rincَn، نويسنده , , B. and Borja، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Abstract :
The influence of the hydraulic retention time (HRT) and organic loading rate (OLR) on the performance of the hydrolytic–acidogenic step of a two-stage anaerobic digestion process of sunflower oil cake (SuOC) were assessed. The experiments were performed in laboratory-scale completely stirred tank reactors at mesophilic (35 °C) temperature. Six OLR (ranging from 4 to 9 g VS L−1 d−1) for four HRTs (8, 10, 12 and 15 days) were tested to check the effect of each operational variable. Based on the results obtained, it can be concluded that the hydrolysis yields obtained for all HRTs and OLRs assayed were in the range of 20.5–30.1%. In addition, the acidification degree of the substrate was mainly influenced by the OLR but not by the HRTs, the highest value (83.8%) being achieved for an HRT of 10 days and an OLR of 6 g VS L−1 d−1.
Keywords :
Organic loading rate (OLR) , Sunflower oil cake (SuOC) , Two-stage anaerobic digestion (TSAD) , Hydrolytic–acidogenic stage , Hydraulic Retention Time (HRT)
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology