การผลิตน้ำมันชีวภาพที่มีปริมาณออกซิเจนต่ำจากกระถินยักษ์ / สราวุฒิ คงมั่นทวีทรัพย์ = Production of bio-oil with low oxygen content from giant leucaena / Sarawut Khongmantaweesup
To study the production of bio-oil with low oxygen content from giant leucaena. The pyrolysis was conducted in an auto-clave reactor. The influences of pyrolysis temperature in range of 350℃ to 400℃, holding time, water to biomass mass ratio and type of catalysts were investigated on bio-oil yield and bio-oil composition. The oxygen content in bio-oil and bio-oil composition were analyzed by CHN analyzer and gas chromatography mass spectrometry (GC-MS), respectively. The product gas was analyzed by gas chromatography (GC). The results showed that, in the presence of NiMo, temperature of 375℃ gave the maximum bio-oil yield and bio-oil yield was slightly increased with increasing the holding time and water to biomass mass ratio. Moreover, the oxygen content in oil product was decreased with increase the holding time whereas it was increased with higher the water to biomass mass ratio. Therefore, it can be concluded that the water to biomass mass ratio increased, the ability to remove oxygen compound from the bio-oil was reduced. It was found that the optimum conditions were temperature of 375℃, holding time of 60 minute and water to biomass mass ratio of 4:1, in the presence of NiMo catalyst.