ANAEROBIC DIGESllON OF MARKET GARBAGE AND PADDY STRAW AS AN OPll0N TO PRODUCE EFFICIENT BIOGAS AND FERllUZER WHILE ACllNG AS AN ENVIRONMENTAL FRIENDLY TECHNIQUE TO MANAGE SOLID WASTE.
DOI:
https://doi.org/10.31357/fesympo.v0i0.1520Abstract
Present research is a search of possible avenues in biogas technology to obtain biogasfrom agricultural wastes such as paddy straw and market garbage to preventenvironmental pollution while using biogas to compensate rural energy needs andresidues as a fertilizer.
The objectives of the study were to analysis the chemical composition of market garbageand paddy straw and assess the gas production pattern and the volume in biomethanationof market garbage and paddy straw. Two Sri Lankan batch type biogas digesters wereused with a volume of 5m3 and charged with market garbage and paddy straw.
Carbon, Nitrogen, Potassium and Phosphorous in raw materials were analyzed. Daily gasliberation in each digester was measured. Dry matter percentage of market garbage andpaddy straw were 19.27% and &5.69% respectively. The carbon, nitrogen, potassium,phosphorus and C: N ratio of market garbage was 34.66%, 1.57%, 1.66%,0.311%, and22.07 respectively. In paddy straw, carbon, nitrogen, potassium, phosphorus and C: Nratio was 46.8%, 0.69%, 0.098%, 0.16% and 67.82 respectively. Total gas productionfrom market garbage and paddy straw were164.20 rrr'and 156.20 m3 during the 228 daysand 142 days respectively. Average daily gas productions of market garbage and paddystraw were 0.72m3 and 1.10 m) respectively.
