Virtual Booth

Abstract: Anaerobic digestion (AD) is a process by which microorganisms break down biodegradable material in the absence of oxygen. In recovering the highest biogas, several parameters need to be considered. The crucial parameters, such as substrates to inoculum (S:I) ratio and organic loading rate (OLR), are the factors that influence the production of biogas. In this study, the optimization S:I was varied to 1.0:1.5, 1.5:1.0, 2.0:1.0, and 1.0:2.0. While OLR varied by 3.0, 3.5, 4.0, and 4.5 with unit VS/L. The main substrates used in AD are Carbohydrates Rich Food Waste (CRFW), which claim to contain nutrients. The physical properties of raw CRFW, were determined, and it was reported that the waste was suitable to undergo the AD process. The results show the S:I (2.0 :1.0) ratio and OLR=4.0 recovered the highest biogas values with 90 mL and 92 mL, respectively. The optimum day of AD at optimization parameters was day 4 of digestion time. The study’s outcomes revealed that the optimum operational values of the main parameters may influences biogas recovery. Moreover, this study also provides information on a new strategy used in recovering biogas. Keywords: Carbohydrates Rich Food Waste, Anaerobic Digestion, Biogas Recovery, Substrates to Inoculum ratio, Organic Loading Rate