APPLICATION OF BIOGAS TECHNOLOGY AS A RENEWABLE ENERGY SOURCE AND ENVIRONMENTAL FRIENDLY TECHNIQUE TO MANAGE SOLID WASTE
H.M.C.K.Bandara, K.D.N.Weerasinghe, G.Y.Jayasinghe Faculty of Agriculture, University of Ruhuna, Sri Lanka
ABSTRACT
Biogas technolog y can be play a vital role in supplying of energy demand whileutilizing solid waste as a raw material for the gas generation. This research was carried out to find out possible avenues to produce Biogas from Agricultural waste such as paddy straw and market garbage.The objectives of the study were to (1) analyze the chemical composition of market garbage and paddy straw, (2) find the composition of market garbage and (3) assess the gas production pattern in biomethantion of market garbage and paddy straw. Two
Sri Lankan batch type digesters were used with a volume of 5m3 and total weight of the market garbage and paddy straw filled in to the digester were 3580 kg and 871 kg respectively. Cow dung and Urea were added to the paddy straw digester as inoculum s and to balance the C: N ratio in to 30:1. Carbon, Nitrogen, Potassium and Phosphorous in raw material were analyzed. Daily gas generation and pressure indicate by the manometer in each digester were measured. Result revealed that dry matter percentage in market garbage and paddy straw were 19.27% and 85.69% respectively. The Carbon, Nitrogen, Potassium, Phosphorus and C: N ratio of market garbage was 34.66%, 1.57%, 1.66%, 0.311% and 22.07 respectively. In paddy straw,
it was 46.8%, 0.69%, 0.098%, 0.16% and 67.82 respectively. Total gas production from market garbage and paddy straw were 164.20 m3 and 156.20 m3 during the 228 days and 166 days respectively. From the result it could be concluded that market garbage enhances with higher Nitrogen, Potassium, Phosphorous values in comparison to paddy straw. Market garbage digester shows higher gas production with a long lag phase. Average daily gas production from Paddy straw digester could be sufficient for cooking purposes of
an average household (approximate ly 3.82 cooking hours).
Keywords:
- Paddy straw, Market garbage, Biomethantion, Digesters, Renewable energy
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H.M.C.K.Bandara, K.D.N.Weerasinghe, G.Y.Jayasinghe Faculty of Agriculture, University of Ruhuna, Sri Lanka
ABSTRACT
Biogas technolog y can be play a vital role in supplying of energy demand whileutilizing solid waste as a raw material for the gas generation. This research was carried out to find out possible avenues to produce Biogas from Agricultural waste such as paddy straw and market garbage.The objectives of the study were to (1) analyze the chemical composition of market garbage and paddy straw, (2) find the composition of market garbage and (3) assess the gas production pattern in biomethantion of market garbage and paddy straw. Two
Sri Lankan batch type digesters were used with a volume of 5m3 and total weight of the market garbage and paddy straw filled in to the digester were 3580 kg and 871 kg respectively. Cow dung and Urea were added to the paddy straw digester as inoculum s and to balance the C: N ratio in to 30:1. Carbon, Nitrogen, Potassium and Phosphorous in raw material were analyzed. Daily gas generation and pressure indicate by the manometer in each digester were measured. Result revealed that dry matter percentage in market garbage and paddy straw were 19.27% and 85.69% respectively. The Carbon, Nitrogen, Potassium, Phosphorus and C: N ratio of market garbage was 34.66%, 1.57%, 1.66%, 0.311% and 22.07 respectively. In paddy straw,
it was 46.8%, 0.69%, 0.098%, 0.16% and 67.82 respectively. Total gas production from market garbage and paddy straw were 164.20 m3 and 156.20 m3 during the 228 days and 166 days respectively. From the result it could be concluded that market garbage enhances with higher Nitrogen, Potassium, Phosphorous values in comparison to paddy straw. Market garbage digester shows higher gas production with a long lag phase. Average daily gas production from Paddy straw digester could be sufficient for cooking purposes of
an average household (approximate ly 3.82 cooking hours).
Keywords:
- Paddy straw, Market garbage, Biomethantion, Digesters, Renewable energy
Download PDF
