Estabilidade oxidativa e biodiesel : breve revisão

Abstract

This paper presents a brief review about biodiesel, a biofuel made of renewable biomass that can be used as an alternative way to fossil fuel diesel, seeking to know it´s historical context, raw materials, production process, among others. In the biodiesel commercialization process, there are a series of analyzed parameters that must be in accordance with the standards in force, to guarantee the consumer a quality biofuel. The oxidative stability of the biodiesel is one of these evaluated parameters and, when oxidized, the biodiesel is subjected to several reactions that compromise it´s quality. To avoid this process, antioxidant additives are added. This work, sought to learn the antioxidants already used in the industries and the others that are currently being tested. By being bibliographical research, the web of Science database was used, and the articles published in the last 10 years were analyzed, filtering the articles that presented tests of new antioxidants in ethyl or soy methyl biodiesel, 37 articles in English were filtered. The antioxidants tested were analyzed, also their induction periods, storage period and performance when compared to other antioxidants commonly used. It is concluded that there are several antioxidants being tested right now, natural and synthetic, being and area of study quite explored and that they are presenting satisfactory performances serving as possible alternatives for future antioxidants additives.