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      연구 논문 : 슬러지 냉동처리에 의한 갈조로부터 바이오가스 생산 = Reseach Papers : Freeze Treatment of Sludge for the Biogas Production From Brown Macroalgae

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      https://www.riss.kr/link?id=A99559605

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      In the present study, biogas was produced from the anaerobic digestion of marine macroalgae (Laminaria japonica) biomass. The optimal anaerobic condition for producing the sludge was the freeze treatment at -70 ℃ for 20 min. Total amounts of hydrogen and methane gas produced were 667.28 mL/L and 3420.24 mL/L, respectively, which were 2.7 and 3.4 times greater than that in the control group. Freeze treatment of sludge produced the maximum biogas under an initial optimum pH of 7.0 and the maximum biomass at an initial optimum pH of 8.0. We confirmed that biogas production was greatly reduced under acidic conditions compared to that under alkaline conditions. Sludge was freeze treated, and the biomass and sludge production was optimal the total amounts of hydrogen and methane gas produced were 643.73 mL/L and 4291.6 mL/L, respectively, which were 2.6 and 4.3 times greater than in the control group. Also the results showed that under optimal conditions in a 5-L bioreactor, a maximum of 1605.03 mL/L of hydrogen and 4593.71 mL/L of methane gas could be produced by the substrate contained in the marine macroalgae biomass.
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      In the present study, biogas was produced from the anaerobic digestion of marine macroalgae (Laminaria japonica) biomass. The optimal anaerobic condition for producing the sludge was the freeze treatment at -70 ℃ for 20 min. Total amounts of hydroge...

      In the present study, biogas was produced from the anaerobic digestion of marine macroalgae (Laminaria japonica) biomass. The optimal anaerobic condition for producing the sludge was the freeze treatment at -70 ℃ for 20 min. Total amounts of hydrogen and methane gas produced were 667.28 mL/L and 3420.24 mL/L, respectively, which were 2.7 and 3.4 times greater than that in the control group. Freeze treatment of sludge produced the maximum biogas under an initial optimum pH of 7.0 and the maximum biomass at an initial optimum pH of 8.0. We confirmed that biogas production was greatly reduced under acidic conditions compared to that under alkaline conditions. Sludge was freeze treated, and the biomass and sludge production was optimal the total amounts of hydrogen and methane gas produced were 643.73 mL/L and 4291.6 mL/L, respectively, which were 2.6 and 4.3 times greater than in the control group. Also the results showed that under optimal conditions in a 5-L bioreactor, a maximum of 1605.03 mL/L of hydrogen and 4593.71 mL/L of methane gas could be produced by the substrate contained in the marine macroalgae biomass.

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