Caracterização química volátil dos resíduos da indústria sucroalcooleira via HS-SPME-GCMS

Abstract

The sugar and alcohol industry represents great importance for the economy in Brazil, contributing significantly for the energy. However, this activity produces a lot of wastes like vinasse, filter cake and sugar cane bag which don´t have commercial value becoming a problem to discard. As consequence, environmental problems like local ecosystems contaminations and pest infestations are reported due the accumulation of these wastes. In this sense, studies for reuse and minimization of these impacts are imminent, especially for vinasse which represents the most quantitative of waste produced. Therefore, the objective if this study is determining the volatiles compounds composition on different products of sugar and alcohol industry collected in 2018 in Nova Alvorada do Sul, state of Mato Grosso do Sul, and Campo Florido, state of Minas Gerais. The identification of volatiles compound was made by HS-SPME-GCMS. In relation of chemical composition, in the first city were identified 59 compounds belonging to the following chemical classes: esters, alcohols, alkanes, aldehydes, ketones, ethers, organic acids, and sulfur compounds. In the other city were identified 67 compounds belonging to the same chemical classes in addition to terpenoids and phenols. The chromatographic profiles showed that there is a predominance of esters (30-37%), alcohols (13-17%) and alkanes (14-19%) in the different sample studied (vinasse, filter cake, straw and rubble of vinasse). Besides that, there was no significant variation on the percentage of different chemical classes identified on different locals of collect of substrate. The results approach in this study will contribute for future investigations of applicability or correct destination for these waste minimizing the impacts of their accumulation n the environment.