Gas Production in The Digester with The Addition of Different Organic Materials

Biogas is a gas production process from organic material with the help of bacteria. Biogas that uses raw material for cow feces from 3-4 heads is able to produce biogas equivalent to 3 liters of kerosene per day. This study aims to determine the effect of raw material for digester stuffing from cow feces added with rice straw and hyacinth (Eichhornia crassipes) on gas production. This study consisted of 4 treatments and 4 replications. The raw materials for the digester are: P1: cow feces and water, P2: cow feces, hyacinth and water, P3: cow feces, rice straw and water, P4: cow feces, hyacinth, rice straw and water. The design used is a completely randomized design. The results of statistical analysis showed that the digester material had a very significant effect (P<0.01) on biogas production. Biogas production in each treatment: P1 = 4262.5 ml; P2 = 4127.5 ml; P3 = 3862.5 ml and P4 = 4320 ml. The conclusion is that the more diverse the organic materials that fill the digester, the higher the biogas produced. The highest gas production was obtained from the addition of organic matter of cow feces, rice straw and hyacinth