Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
ENERGY AND CARBON CREDITS GENERATION FROM THE PRODUCTION OF BIOGAS FROM THE ETHANOL STILLAGE OF CORN AND SUGAR CANE
Submission Author:
Andreza Vaz , PA
Co-Authors:
Andreza Vaz, Ana Paula Mattos
Presenter: Andreza Vaz
doi://10.26678/ABCM.ENCIT2020.CIT20-0129
Abstract
In the alcohol industry, the main waste residues are stillage, sugarcane bagasse, and corn straw. The management of this waste is one of the critical points of the sector's highest development. An alternative to reduce environmental impacts and add value to waste, mainly stillage is its use for the generation of biogas and, consequently, energy. This work presents an estimate of the production of biogas and bioenergy from the anaerobic digestion of stillage from sugar cane and corn. The generation of carbon credits for the use of biogas helps to decrease the polluting impact of vinasse and combustion fossil fuels. Autonomous plants produce more bioenergy than the annexes because these plants have two very influential and decisive factors for the more generation of biogas and methane is the factor of generation efficiency and the factor ethanol generation efficiency. Considering 60% of methane in biogas and the season of 2019/20 sugarcane, the generation of bioenergy in autonomous plants was 8.76E6 MWh/year, and for attached plants, it is 4.17E6MWh/year. Bioenergy from the corn plant, with 71.25% methane, resulted in the generation of 7.35E5 MWh/year of bioenergy. All methods for the generation of carbon credits are millions generated per year for both feedstocks.
Keywords
ethanol, Vinasse, Sugar cane, Corn, bioenergy, Carbon credits
DOWNLOAD PDF VIEW PRESENTATION
