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OXIDATIVE AND STORAGE STABILITY OF BIODIESEL MADE FROM RAPESEED OIL

机译:菜籽油制成的生物柴油的氧化稳定性和贮藏稳定性

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As an environmentally compatible and cost-effective alternative to conventional diesel, biodiesel hasmarkedly increased its share in the fuel market. Inability to predict its deterioration rate and shelf life from qualitycharacteristics of EN14214 standard can lead to performance problems in all types of diesel fuel equipment. Theobjectives of this study are to determine the oxidative stability of biodiesel samples by the Rancimat method and findsome relationship between oxidative stability and shelf life obtained by monitoring acid value and viscositycharacteristics during storage under conditions that are similar to those encountered in use (at 40 °C in low light). Theoxidative stability of biodiesel made from rapeseed oil was improved by adding the antioxidant Butylatedhydroxytoluene. The results show that the shelf life determination from two different parameters gives practically thesame results. In our experiments the oxidative stability changes within 5,89 - 12,37 h, but the shelf life (SL) within1250 - 8200 h. The shelf life is related to the Rancimat induction period by the relationship lg(SL) = 2,54lg(Rancimat induction period) + 1,125 (R = 0,9992), which can be used for predicting the shelf life.
机译:作为传统柴油的环保兼容和具有成本效益的替代品,生物柴油具有 显着增加了其在燃料市场的份额。无法根据质量预测其劣化率和保质期 EN14214标准的某些特性会导致所有类型的柴油设备出现性能问题。这 这项研究的目的是通过Rancimat方法确定生物柴油样品的氧化稳定性并发现 通过监测酸值和粘度获得的氧化稳定性和保质期之间的一些关系 在与使用中相似的条件下(在弱光下40°C下)存储期间的特性。这 添加抗氧化剂丁基化可提高菜籽油制得的生物柴油的氧化稳定性 羟基甲苯。结果表明,由两个不同参数确定的货架期实际上给出了 相同的结果。在我们的实验中,氧化稳定性在5,89-12,37 h内变化,但保质期(SL)在 1250-8200小时货架期与兰西马特诱导期的关系为lg(SL)= 2,54 lg(Rancimat诱导期)+ 1,125(R = 0,9992),可用于预测保质期。

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