不同催化剂浓度和反式酯化温度对棕榈仁油和花生油生产生物柴油收率的优化及影响

Blessing Margreth Obidike, Nelson Onyekachi Okwara, A. W. Verla, Enyoh Christian Ebere, Johnpaul Mgbagwu
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引用次数: 1

摘要

化石燃料对环境产生的负面影响导致人们需要寻找可再生能源的替代途径,例如生物柴油,这种能源具有无限的持续时间,而很少或没有有害影响。本研究以甲醇钠(CH3ONa)为催化剂,对棕榈仁油和花生油进行了反式酯化反应。研究了在(50、55和60)℃的反式酯化温度下,甲醇钠(CH3ONa)催化剂浓度(0.25、0.5、1.0、1.5和2.0)% w/v对花生油和棕榈仁油生产生物柴油的影响。确定了最佳工艺产率的催化剂浓度和反式酯化温度。以花生油和棕榈仁油为原料,CH3ONa用量为0.5%w/v,反式酯化温度为55℃,转速为360转/分,反应时间为90 min,反应收率分别为98%和84%(体积)。采用ASTM标准对所得生物柴油进行燃料性能分析,得到的结果如下:棕榈仁油和花生油的比重(15℃时分别为0.8835、0.8815)、闪点(98、124)℃、粘度(5.2、7.6)mm2S-1。
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Optimization and effect of varying catalyst concentration and trans-esterification temperature on the yield of biodiesel production from palm kernel oil and groundnut oil
The negative environmental impact generated by fossil fuel has resulted in the demand to search for alternative routes of renewable sources of energy, such as biodiesel, that have unlimited duration while having little or no hazardous impact. In this study, trans-esterification of palm kernel oil and groundnut oil was carried out using sodium methoxide (CH3ONa) as a catalyst. The effect of varying Sodium Methoxide (CH3ONa) catalyst concentrations of (0.25, 0.5, 1.0, 1.5, and 2.0) % w/v at trans-esterification temperatures of (50, 55, and 60) oC on the yield of biodiesel from groundnut oil and palm kernel oil was determined. This was to identify the catalyst concentration and trans-esterification temperature with optimal process yield. The process gave optimum biodiesel yields of 98% and 84% by volume of groundnut oil and palm kernel oil at reaction conditions of 0.5%w/v CH3ONa as catalyst, trans-esterification temperature of 55oC, 360 rpm mixing rate and a reaction time of 90 minutes. The biodiesel produced was analyzed for fuel properties using the ASTM standard, and the results obtained were as follows; specific gravity (0.8835, 0.8815 at 15oC), flash point (98, 124) oC, and  viscosity (5.2, 7.6) mm2S-1 for palm kernel oil and groundnut oil respectively.
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