원저(原著) : 고추와 피망 농업부산물의 혐기소화에 의한 바아오가스 및 전력 생산량 예측

In this study, the feasibility of the biogas production by anaerobic digestion of the agricultural residues, which are stems and leaves of hot pepper or sweet pepper from one of the agricultural villages in South Korea, was investigated. Three components (moisture, volatile portion and ash) analysis was performed to characterize the basic property of the agricultural residues and the ultimate element (C, H, O, N and S) of the test material was analyzed to estimate the theoretical biogas production by anaerobic digestion. The formulas based on the stoichiometry of methane production were used to estimate the theoretical amount of biogas production from the agricultural residues, and the potential electricity of biogas from the agricultural residues was estimated. The results showed that the appropriate C/N ratio for anaerobic digestion was found with the agricultural residues, and hot pepper and sweet pepper could theoretically produce 365 L/kg VS and 326 L/kg VS of methane, respectively. The potential electricity of biogas generated from the agricultural residues was estimated to be 1,428 kWh in a day and the electricity of 157 families (63% of the total families) in the target area could be supplied. The electricity of all the families in this area could be supplied if the anaerobic digestion of food waste is added to that of the agricultural residues. In this case, the profit of 79,507 won/day could be made by selling the electricity remained after family supply.