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首页> 外文期刊>AIMS Energy >Extraction of radish seed oil (Raphanus sativus L.) and evaluation of its potential in biodiesel production
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Extraction of radish seed oil (Raphanus sativus L.) and evaluation of its potential in biodiesel production

机译：萝卜种子油的提取及其在生物柴油生产中的潜力评估

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Growing concern about replacing fossil fuels with renewable energy sources, coupled with society’s concerns about environmental preservation, are the main reasons why governments have sought strategies for increased production and consumption of renewable and sustainable fuels. Radish (Raphanus sativus L.) belongs to the group of oilseeds of the Brassicaceae family, being widely cultivated in the south and central-west regions of Brazil, with physical and chemical characteristics propitious to the production of biofuels. In this context, the objective of the present work was to evaluate three different methods of oil extraction: solvent extraction, cold pressing and swelling technique, to evaluate the potential of radish oil in biodiesel production using methanol, ethanol and a mixture of both containing 60% and 40% respectively, and to evaluate the composition of fatty acids. The methodology consists firstly in the extraction of the oil, followed by transesterification reaction using 10 mL of pretreated oil and sodium hydroxide in the proportion of 1% in mass, relative to the oil. The oil samples were used in the transesterification reactions with methanol, ethanol and a mixture of methanol (60%) and ethanol (40%) in different proportions and temperatures. The results indicated that, for the oil extraction processes, the seed swelling technique presented a high extraction yield (34%). The composition of fatty acids showed presence of approximately 30% of saturated compounds and around 50% of compounds with chain up to 18 carbons, also had presence of erucic acid (up to 41%), and a high percentage of oleic acid (up to 30%). Regarding the transesterification reactions, the highest yield occurred with the use of methanol, about 86%. Thus, in the light of the results, it can be concluded that radish oil has great potential for biodiesel production, but, other analyzes, such as acidity and flash point, should be performed to more specifically evaluate the physicochemical characteristics of biodiesel.
机译：人们越来越关注用可再生能源替代化石燃料，再加上社会对环境保护的关注，这是政府寻求增加可再生和可持续燃料生产和消费战略的主要原因。萝卜（Raphanus sativus L.）属于十字花科的油料种子，在巴西的南部和中西部地区广泛种植，其物理和化学特性有利于生产生物燃料。在这种情况下，本研究的目的是评估三种不同的石油提取方法：溶剂提取，冷压和溶胀技术，评估使用甲醇，乙醇以及两种含60种乙醇的混合物生产生物柴油中萝卜油的潜力。 ％和40％，分别以评估脂肪酸的组成。该方法首先包括萃取油，然后使用相对于该油为质量百分比为1％的10 mL预处理油和氢氧化钠进行酯交换反应。将油样品用于与甲醇，乙醇以及甲醇（60％）和乙醇（40％）以不同比例和温度的混合物进行酯交换反应。结果表明，在油提取过程中，种子溶胀技术具有较高的提取率（34％）。脂肪酸的组成显示存在约30％的饱和化合物和约50％的具有最多18个碳链的化合物，还存在芥酸（高达41％）和高百分比的油酸（高达90％）。 30％）。关于酯交换反应，使用甲醇时最高收率，约为86％。因此，根据结果，可以得出结论，萝卜油具有生产生物柴油的巨大潜力，但是，应进行其他分析，例如酸度和闪点，以更具体地评估生物柴油的理化特性。

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