IPOMOEA BATATA BIOREFINERY: OBTAINING SECOND-GENERATION BIOETHANOL

Vivas-Cuellar M.C.; Barturén-Quispe A.; Llanos S.A.V.; Marin-Flores O.G. · European Biomass Conference and Exhibition Proceedings (2025)

Resumen

The availability of raw materials for bioethanol production and the choice of technology benefit biofuel consumers. The biorefinery is justified because there are always surpluses of potatoes, sweet potatoes, and other crops that are sold at very low prices or even discarded. Due to their starch content, these can be used for the production of second-generation bioethanol, giving greater added value to these Peruvian tubers. An important point is that the cultivation of these tubers is promoted in massive quantities for the production of bioethanol, the fuel of the future. A 1:1 ratio of tuber to water was used to initiate gelatinization at 100°C. The mixture was then cooled to form a paste and then subjected to enzymatic hydrolysis: with alpha-amylase at 80°C for 1 hour and with glucoamylase at 60°C for 1 hour, resulting in a solution of 18°Brix. Fermentation was carried out at room temperature (23°C) with Saccharomyces cerevisiae yeast at 10°Brix for 3 days. The mixture was filtered and distilled to yield biethanol.

Instituciones: Universidad Nacional de Ingeniería; Universidad Nacional Pedro Ruiz Gallo