초록
<P><B>Abstract</B></P> <P>This study aims to examine the biogas potential for animal manure, wheat straw, food waste and rice straw. Batch experiments were performed at a laboratory scale using biomethane potential (BMP) assays for a period of 50 days. The biogas yield was observed higher when using rice straw (0.51 m<SUP>3</SUP>/kg VS<SUB>added</SUB>) as a substrate, as compared to wheat straw (0.44 m<SUP>3</SUP>/kg VS<SUB>added</SUB>) and animal manure (0.31 m<SUP>3</SUP>/kg VS<SUB>added</SUB>) substrates. Around 12-25% of biogas was produced in the initial phase of 5 days for manure, wheat straw, and rice straw feedstocks. During the middle phase of 33 days for these feedstocks, 68-80% of biogas was produced. Less than 8% of biogas was produced during the final phase of last 12 days of the experiment. The biogas production from food waste was found lowest (0.17 m<SUP>3</SUP>/kg VS<SUB>added</SUB>) among all substrates. Therefore, the co-digestion of food waste and animal manure is more appropriate with wheat straw and rice straw than mono-digestion for achieving higher biogas production.</P>