APROVEITAMENTO E OTIMIZAÇÃO DE RESÍDUOS DA INDÚSTRIA DE PROCESSAMENTO DE MANDIOCA PARA PRODUÇÃO DE ETANOL
APROVEITAMENTO E OTIMIZAÇÃO DE RESÍDUOS DA INDÚSTRIA DE PROCESSAMENTO DE MANDIOCA PARA PRODUÇÃO DE ETANOL
DOI: https://doi.org/10.22533/at.ed.8772428031
Palavras-chave: Fermentação, Enzimas, Desperdício
Keywords: Fermentation, Enzymes, wasted
Abstract: Cassava (Manihot esculenta crantz) is a plant originating from South America, probably from Central Brazil, and is currently cultivated in several countries. Considering the main types of processing of cassava roots in Brazil, such as the manufacture of cassava flour and the extraction of starch, the by-product generated, coming from the pressing of cassava in flour mills and starch factories (effluent) has a high polluting capacity, which can cause major impacts on the environment, due to its toxicity and concentration of organic matter. Thus, it becomes an environmental liability that requires research to be reused. In this work, the physical-chemical composition of the collected manipueira water was evaluated, it was quantified and analyzed for pH, reducing sugars, starch content, biochemical oxygen demand (BOD) and chemical oxygen demand (COD). The pH values found were 4.8 and turbidity (UNT) of 1000, in relation to biochemical oxygen demand (BOD), chemical oxygen demand (COD), cyanide, total solids and total volatile solids (STV), all in (mg.L-1) were 784, 17.914, 17.5, 41.300 and 34.600, respectively. Furthermore, the maximum concentration of ethanol produced was 54 g/L in 24 hours of fermentation, consuming 100% of the substrate, with the maximum volumetric productivity achieved of 2.8 g/Lh, during 16 hours of process, with a yield final (YP/S) of 0.45 gethanol/gglucose, in relation to the distillation of yeast wine, it presented an alcoholic content of 80 ºGL.
- Cristian Jacques Bolner de Lima
- Monique Virães Barbosa dos Santos
- Marcos Benedito Santana