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标题：Antioxidant Evaluation of Extracts of Pecan NutShell ( Carya illinoensis) in Soybean Biodiesel B100
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作者：Alexandra Aparecida do Amaral ; Geciele Caroline Schuster ; Nayara Lais Boschen 等
期刊名称：Global Challenges
印刷版ISSN：2056-6646
电子版ISSN：2056-6646
出版年度：2019
卷号：3
期号：11
页码：1-10
DOI：10.1002/gch2.201900001
语种：English
出版社：John Wiley & Sons, Ltd
摘要：AbstractBiodiesel is subject to radical reactions that promote degradation. To decrease the speed of these degradation reactions and increase oxidative stability, either natural or synthetic antioxidants are added to biodiesel. Thus, the objective of this study is to evaluate the effect of extracts of pecan nutshell (Carya illinoensis) as natural antioxidants derived from biomass using water, ethanol, and methanol/water (50/50) as a solvent for extraction. The addition of these antioxidants is performed during the soybean biodiesel washing process in an unconventional manner. The results obtained are statistically analyzed and compared to the control. The induction time (IT) for the biodiesel samples washed with ethanolic extract of pecan nutshell (5 g L−1), aqueous extract of pecan nutshell (12 g L−1) and methanol/water extract of pecan nutshell (12 g L−1), are, respectively, 9.46, 7.60, 7.43 h. The activation energy and the storage time of the biodiesel samples washed with the extracts are also studied. The order of reaction of the oxidation kinetics of biodiesel is first order.The use of a natural antioxidant obtained from Pecan nutshell extracts (Carya illinoensis) to increase the oxidative stability of B100 Soybean Biodieselis demonstrated. Pecan nutshell is a non‐value‐added waste. The study presented satisfactory and significant results, and the use of a natural antioxidant obtained from a residue, to be used as an antioxidant in biofuel biodiesel, is promising and sustainable.
关键词：biofuelsinnovationkineticsoxidationrancimat