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首页> 外文会议>14th conference on process integration, modelling and optimisation for energy saving and pollution reduction >Role of the Castor Oil Extracted from Seeds of Ricinus Communis for Biodiesel Formation using Novozym 435
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Role of the Castor Oil Extracted from Seeds of Ricinus Communis for Biodiesel Formation using Novozym 435

机译：诺维信435从蓖麻种子中提取的蓖麻油在生物柴油形成中的作用

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Castor (Ricinus communis) which is classified in literature as a model industrial oilseedrncrop has been used in the present work for the extraction of its oil containing largernfraction of ricinoleic acid (>80%, 12-hydroxyoleic acid). This crop grows widely in Iranrnand more attentions generated recently on this oilseed crop because of its versatility inrnindustrial applications. Biodiesel production in the present work was studied throughrnfirst extracting castor oil by hexane (>60%) followed by transesterification processrnwhich was carried out using commercial lipase Novozym 435. Effect of methanol as thernacyl acceptor in this enzymatic reaction was studied first by monitoring the fate ofrnproduct formation under stepwise addition of the alcohol. The defined reactionrnconditions were: enzyme level 6%, temperature 45 ℃, molar ratio of the substrate (i.e.,rnmethanol to castor oil) 4:1, and time of the reaction equal 72 h. The results obtainedrnshowed that providing 4 moles of methanol for the reaction mixture by adding it in onernstep is the preferred situation and the amount of fatty acid esters was equaled to thatrnobtained through stepwise addition of the methanol. No alcohol inhibition thus wasrnobserved in this process. Time course of the enzymatic methanolysis of the castor oilrnwas also obtained. Formation of the methyl esters after 36 h was reached to almostrnconstant level at 85.5%.
机译：蓖麻（Ricinus communis），在文献中被归类为工业用油脂样油，在本工作中已被用于提取其蓖麻油中含有较大馏分的蓖麻油酸（> 80％，12-羟基油酸）。该作物在伊朗广泛种植，最近因其在工业应用中的多功能性而引起了更多关注。通过先用己烷（> 60％）萃取蓖麻油，然后进行酯交换反应，然后使用市售脂肪酶Novozym 435进行酯交换工艺，研究了生物柴油的生产。首先通过监测产物的去向来研究甲醇作为酶催化中的炔丙基受体的作用。在逐步加入醇下形成。定义的反应条件为：酶含量6％，温度45℃，底物的摩尔比（即甲醇与蓖麻油）为4：1，反应时间等于72小时。得到的结果表明，通过一步添加将4摩尔甲醇提供给反应混合物是优选的情况，并且脂肪酸酯的量等于通过逐步添加甲醇获得的脂肪酸酯的量。因此在该过程中没有发现酒精抑制作用。还获得了蓖麻油的酶促甲醇分解的时间过程。 36小时后，甲酯的形成达到几乎恒定的水平，为85.5％。

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