Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-09-26T12:25:36Z No. of bitstreams: 1 DIS_BRUNA_NAIDON_COELHO_COMPLETO.pdf: 3029478 bytes, checksum: 99a39c350f40679d8ddd27a67ef8cef7 (MD5) / Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-09-26T12:25:44Z (GMT) No. of bitstreams: 1 DIS_BRUNA_NAIDON_COELHO_COMPLETO.pdf: 3029478 bytes, checksum: 99a39c350f40679d8ddd27a67ef8cef7 (MD5) / Made available in DSpace on 2017-09-26T12:26:02Z (GMT). No. of bitstreams: 1 DIS_BRUNA_NAIDON_COELHO_COMPLETO.pdf: 3029478 bytes, checksum: 99a39c350f40679d8ddd27a67ef8cef7 (MD5) Previous issue date: 2016-07-15 / New searches for technologies that allow to obtain fuels with the same efficiency of fossil fuels, however, with renewable raw material are increasingly on the agenda in the current world scenario. Biodiesel, derived from vegetable or animal oils, fits perfectly in this context, above all, biodiesel from frying oil that still brings to the surface the resolution of a major environmental problem: the incorrect disposal of oils that are harmful to the environment. However, in its transesterification, some undesirable by-products are found that can to cause problems in the automobile engine. For resolt this problem requires the purification of this biofuel. Purification can be obtented by two routes: wet and dry, the wet being most commonly used in industry. In this type of purification where the water is used for the washing of biodiesel, after purification, this contaminated water also entails another environmental problem: a highly polluted effluent. On the other hand, the dry purification makes use of an adsorbent that generates less effluent and, after use, is usually grounded by its users. In this work studed the recovery of an adsorbent that has been widely used, the Magnesol, and him reuse has been studied for cost reduction purposes in the biodiesel purification process. After the creation of the methodology of recuperation of Magnesol, some solvents were tested and, with the elemental analysis of Carbon, it was verified which solvent presented better performance in the adsorbent recovery, being THF the highlight of this work. The analysis of FTIR, TGA and MEV showed that the adsorbent recovery was efficient, and the chromatography analysis showed that the performance of biodiesel purification with recovered Magnesol should be more worked so that it can be more efficient as it is when used virgin. / Novas procuras por tecnologias que permitam obter-se combust?veis com a mesma efici?ncia dos combust?veis f?sseis, por?m, com mat?ria prima renov?vel est?o cada vez mais em pauta no cen?rio mundial. O biodiesel, proveniente de ?leos vegetais ou animais, encaixa-se perfeitamente neste contexto, sobretudo, o biodiesel proveniente de ?leo de fritura que ainda traz ? tona a resolu??o de um grande problema ambiental: o despejo incorreto de ?leos que s?o prejudiciais ao meio ambiente. Por?m, em sua transesterifica??o, s?o encontrados alguns subprodutos indesej?veis e que podem acarretar problemas no motor do autom?vel, sendo necess?ria a purifica??o deste biocombust?vel. A purifica??o pode ser realizada por duas vias: ?mida e seca, sendo a ?mida mais comumente utilizada na ind?stria. Neste tipo de purifica??o ? utilizado ?gua para a lavagem do biodiesel e, ap?s a purifica??o, esta ?gua contaminada tamb?m acarreta em outro problema ambiental: um efluente altamente polu?do. A purifica??o via seca faz a utiliza??o de um adsorvente que gera menos efluentes e, ap?s sua utiliza??o, costuma ser descartado em aterros sanit?rios pelos seus usu?rios. Neste trabalho foi estudado a recupera??o de um adsorvente que vem sendo muito utilizado, o Magnesol, bem como, sua reutiliza??o, para fins de redu??o de custos no processo de purifica??o do biodiesel. Ap?s a cria??o da metodologia de recupera??o do Magnesol, alguns solventes foram testados e, com a an?lise elementar de carbono, foi verificado qual solvente apresentou melhor performance na recupera??o do adsorvente, sendo THF o destaque deste trabalho. As an?lises de FTIR, TGA e MEV mostraram que a recupera??o do adsorvente foi eficiente, j? a an?lise de cromatografia gasosa mostrou que o desempenho da purifica??o do biodiesel com Magnesol recuperado dever? ser mais trabalhada para que o mesmo possa ser mais eficiente tal qual quando utilizado ainda virgem.