TY - JOUR N2 - The aim of this study was to investigate the influence of residual glycerine (5 and 10% w/w) from the biodiesel industry, used as a co-substrate, on biogas production from maize silage. The experiments were conducted in a laboratory-scale, single-stage anaerobic digester at 39ºC and hydraulic retention time (HRT) of 60 d. Addition of 5% residual glycerine caused organic load rate (OLR) to increase to 1.82 compared with 1.31 g organic dry matter (ODM) L-1d-1 for maize silage alone. The specific biogas production rate and biogas yield were 1.34 L L-1d-1 and 0.71 L g ODM-1 respectively, i.e. 86% and 30% higher than for maize alone. Increasing the residual glycerine content to 10% increased OLR (2.01 g ODM L-1d-1), but clearly decreased the specific biogas production rate and biogas yield to 0.50 L L-1d-1 and 0.13 L g ODM-1 respectively. This suggested that 10% glycerine content inhibited methanogenic bacteria and organics conversion into biogas. As a result, there was accumulation of propionic and valeric acids throughout the experiment. L1 - http://journals.pan.pl/Content/85976/PDF/aep-2014-0035.pdf L2 - http://journals.pan.pl/Content/85976 PY - 2014 IS - No 4 DO - 10.2478/aep-2014-0035 KW - anaerobic digestion KW - residual glycerine KW - energy crops KW - maize silage KW - glycerol osmotic pressure A1 - Pokój, Tomasz A1 - Gusiatin, Zygmunt M. A1 - Bułkowska, Katarzyna A1 - Dubis, Bogdan PB - Polish Academy of Sciences VL - vol. 40 DA - 2014 T1 - Production of Biogas Using Maize Silage Supplemented with Residual Glycerine from Biodiesel Manufacturing UR - http://journals.pan.pl/dlibra/publication/edition/85976 T2 - Archives of Environmental Protection ER -