农业工程学报
農業工程學報
농업공정학보
2013年
6期
202-208
,共7页
丁立军%王喜明%郝一男%陈刚
丁立軍%王喜明%郝一男%陳剛
정립군%왕희명%학일남%진강
生物柴油%种子%优化%文冠果%一步法%响应曲面法
生物柴油%種子%優化%文冠果%一步法%響應麯麵法
생물시유%충자%우화%문관과%일보법%향응곡면법
biodiesel%seed%optimization%Xanthoceras sorbifolia bunge%single-step technique%response surface methodology
为优化文冠果种仁制取生物柴油的工艺,基于中心复合(central composite desig)试验设计方法,采用了文冠果种仁的提取和生物柴油的合成一步完成的工艺.进行了以生物柴油得率为响应值,提取/反应温度、石油醚用量、甲醇用量和NaOH用量为自变量的优化试验,将试验数据拟合建立了数学模型,该模型能够较准确的预测文冠种仁一步法合成生物柴油的得率.结果表明,优化工艺为:提取/反应温度为77℃,石油醚用量为6:1(体积质量比),甲醇用量为文冠果种仁的12%(体积质量比),NaOH 用量为文冠果种仁的0.3%(质量比),此时生物柴油得率为65.44%.
為優化文冠果種仁製取生物柴油的工藝,基于中心複閤(central composite desig)試驗設計方法,採用瞭文冠果種仁的提取和生物柴油的閤成一步完成的工藝.進行瞭以生物柴油得率為響應值,提取/反應溫度、石油醚用量、甲醇用量和NaOH用量為自變量的優化試驗,將試驗數據擬閤建立瞭數學模型,該模型能夠較準確的預測文冠種仁一步法閤成生物柴油的得率.結果錶明,優化工藝為:提取/反應溫度為77℃,石油醚用量為6:1(體積質量比),甲醇用量為文冠果種仁的12%(體積質量比),NaOH 用量為文冠果種仁的0.3%(質量比),此時生物柴油得率為65.44%.
위우화문관과충인제취생물시유적공예,기우중심복합(central composite desig)시험설계방법,채용료문관과충인적제취화생물시유적합성일보완성적공예.진행료이생물시유득솔위향응치,제취/반응온도、석유미용량、갑순용량화NaOH용량위자변량적우화시험,장시험수거의합건립료수학모형,해모형능구교준학적예측문관충인일보법합성생물시유적득솔.결과표명,우화공예위:제취/반응온도위77℃,석유미용량위6:1(체적질량비),갑순용량위문관과충인적12%(체적질량비),NaOH 용량위문관과충인적0.3%(질량비),차시생물시유득솔위65.44%.
The biodiesel was synthesized after the oil extraction and pretreatment, which was relatively complex in production and separation process. The separation cost was very large. That will be greatly reduced when the biodiesel was synthesized from the crude oil. The single-step technique was studied on the synthesis of biodiesel from Xanthoceras sorbifolia kernel in this study, using petroleum ether as extraction agent and methanol as synthesis agent. The oil extraction and ester exchange reaction was conducted under water bath heating and magnetic stirring conditions with sodium hydroxide as the catalyst. The single-step technique was investigated to accomplish oil extraction and biodiesel synthesis from Xanthoceras sorbifolia bunge kernel using central composite design. The predictive model of polynomial quadratic equation was established with Design Expert software. In the model, temperature, petroleum ether amount, methanol amount and sodium hydroxide amount were independent variables and biodiesel yield was response value. The results showed that the influencing degree of the four factors on biodiesel yield was petroleum ether amount > methanol amount > the temperature of extraction and reaction>sodium hydroxid amount. The influencing degree of the interaction between the factors on biodiesel yield was as follows:methanol amount and sodium hydroxid amount>the temperature of extraction and reaction and sodium hydroxid amount > the temperature of extraction and reaction and petroleum ether amount>petroleum ether amount and sodium hydroxid amount>the temperature of extraction and reaction and methanol amount>petroleum ether amount and methanol amount. The model could not only predict the biodiesel synthesis rate but also calculate oil recovery. The results showed that the optimal temperature of extraction and reaction was 77℃, petroleum ether amount was 6:1 mL/g, methanol and sodium hydroxide were 12%(mL/g) and 0.3% (g/g) of Xanthoceras sorbifolia bunge kernel amount respectively. Under these conditions, the biodiesel yield was 65.44%. The major components of biodiesel were methyl palmitate, methyl oleate, methyl linoleate, methyl linolenate and methyl erueate. The method provides a reference for oil extraction and biodiesel synthesis from Xanthoceras sorbifolia bunge kernels.