| Summary: | 碩士 === 逢甲大學 === 綠色能源科技碩士學位學程 === 102 === The purpose of this study is to investigate bioenergy production using continuously stirred tank reactor(CSTR) and agitated granular sludge bed (AGSB). Used concentrated beverage wastewater fermentation to produce hydrogen and used fermentation effluent to digestion produce methane.
The reaction of hydrogen fermentation is used continuous stirred tank reactor(CSTR), which planted bacteria is fructose factory granular sludge of TAIROUN Pruducts Co., which heating at 95 oC for 1 hour then use concentrate bevegrage starting fermentation.
The operation condition of fermentation were hydraulic retention time(HRT) = 8 hour, temperature = 35±1 oC, pH = 5.6±0.1 and substrate concentration = 10 g, 20 g, 30 g , 40 g total sugar/L. Methane digestion reactor was using agitated granular sludge bed, which planted bacteria is fructose factory granular sludge of TAIROUN Pruducts Co., then starting methane digestion when bacteria domestication for one week. The operation of methane digestion were HRT=72, 36, 18, 12 hour, pH=7.2±0.1, temperature = 35±1 oC.The substrate was use 10 g, 20 g, 30 g , 40 g total sugar/L hydrngen fermentation effluent.
The result show that the hydrogen fermentation system at HRT=8 hour, temperature=35 oC, pH=5.6, substrate concentration = 40 g total sugar/L has the highest hydrogen production rate and hydrogen concentration of 21.0 L/L-d, 49.4 %. Methane digestion system at HRT= 12 hour, temperature = 35 oC, pH=7.2 and substrate concentration used 30g total sugar/L of hydrogen fermentation effluent has the highest methane production rate(MPR) and COD removal rate of 12.0 L/L-d, 78.4 %.
Plasma reforming system used methane digestion’s bio-methane reforming to hydrogen, which operation were voltage = 220 V, catalyst mass = 1.5 g, temperature = 25 oC, flowing speed = 720 mL/hr and test time must more than 80 minutes has the highest HPR 5.5 mL/mL-hr. Finally, the hydrogen production process in this study was combined anaerobic fermentation and plasma assisted methane reforming as pervious mention.
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