The effect of adding apple pomace to cows waste on the productivity of biogas

Abstract

The secondary agricultural waste using anaerobic fermentation is considered as a good choice for a clean environment and as a source for clean energy, but the augmentation of the sugar quantity could inhibit the anaerobic fermentation process. This study was carried out in the second faculty of agriculture between 2020 and 2021. The research aimed to investigate the effect of adding apple pomace to caw manure on producing biogas. The batch experiences were conducted in laboratory-scale digesters on substrates added apple pomace with rates 12.5%, 25% and 37.5%, at a laboratory temperature, for 42 days, and compared it with substrates untreated by adding apple pomace. The results showed that treatment of cow manure substrates by adding apple pomace with rates 12.5%, 25% and 37.5%, significantly increased the production of Biogas compared with untreated substrates which produced 11.76         L_N kg^-1 OTS biogas. The results also showed that treatment  by adding apple pomace with rates 25% to the substrates is the  best  tested treatments methods  which  produced     65.99 L_N kg^-1 OTS of biogas compared to untreated substrates.