Publication:
Spectroscopic analysis of structural transformation in biodiesel degradation

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dc.citedby19
dc.contributor.authorSaifuddin N.en_US
dc.contributor.authorRefal H.en_US
dc.contributor.authorid22135844300en_US
dc.contributor.authorid55977565200en_US
dc.date.accessioned2023-05-16T02:46:33Z
dc.date.available2023-05-16T02:46:33Z
dc.date.issued2014
dc.description.abstractThe vegetable oil, fats and their biodiesel suffer with the drawback of deterioration of its quality during long term storage unlike petroleum diesel. The oxidation and thermal stability of two biodiesels of different origins, viz. palm oil derived biodiesel and used cooking oil based biodiesel were analyzed. The structural transformation of Fatty Acid Methyl Ester (FAME) of the biodiesels was analyzed by an infrared spectrometer and an ultraviolet absorption spectrometer. The infrared spectra of the samples were recorded by FTIR spectroscopy. The absorbance values of the spectrum bands were observed and it was determined that some of the chemical groups of oxidized oils caused changes in absorbance. The spectroscopic data of degraded biodiesel suggested oxidative polymerization. The results demonstrated that the oxidation behavior of biodiesels of different origins was closely related to the composition and distribution of FAMEs. Higher concentration of unsaturated FAME with multi-double bonds exhibited poorer oxidation resistance. In this study, in order to increase the stability of biodiesel, against oxidation process during the storage and distribution, different percentages (0.02, 0.05, 0.1 and 0.2% (w/v), respectively) of caffeic acid, were added as natural antioxidants. The antioxidant effect increased with concentration up to an optimal level. Above the optimal level, the increase in antioxidant effect with its concentration was relatively small. © Maxwell Scientific Organization, 2014.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.19026/rjaset.8.1079
dc.identifier.epage1159
dc.identifier.issue9
dc.identifier.scopus2-s2.0-84922747058
dc.identifier.spage1149
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84922747058&doi=10.19026%2frjaset.8.1079&partnerID=40&md5=8ee6f3efeb1f0babf18b6def005b6fa3
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/21998
dc.identifier.volume8
dc.publisherMaxwell Science Publicationsen_US
dc.relation.ispartofAll Open Access, Hybrid Gold
dc.sourceScopus
dc.sourcetitleResearch Journal of Applied Sciences, Engineering and Technology
dc.titleSpectroscopic analysis of structural transformation in biodiesel degradationen_US
dc.typeArticleen_US
dspace.entity.typePublication
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