Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Energy Integration of Biogas Production in an Integrated 1G2G Sugarcane Biorefinery: Modeling and Simulation

Full text
Author(s):
Rodriguez, Renata Piacentini [1] ; Manochio, Carolina [2] ; Moraes, Bruna de Souza [3]
Total Authors: 3
Affiliation:
[1] Univ Fed Alfenas UNIFAL MG, Inst Ciencia & Tecnol, Rodovia Jose Aurelio Vilela 11-999, BR-37715400 Pocos De Caldas, MG - Brazil
[2] Elfusa Geral Eletrofusao LTDA, Rua Julio Michelazzo 501, BR-13872900 Sao Joao Da Boa Vista, MG - Brazil
[3] Univ Estadual Campinas Unicamp SP, NIPE, Rua Cora Coralina 330, BR-13083896 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: BioEnergy Research; v. 12, n. 1, p. 158-167, MAR 2019.
Web of Science Citations: 1
Abstract

The integration of the first and second generation (1G2G) ethanol production promotes the increase of biofuel productivity per hectare of planted sugarcane, as well as the main liquid waste stream: vinasse, derived from ethanol distillation. As a sustainable way for it disposal, biogas production from anaerobic digestion (AD) promotes environmental suitability while enabling bioenergy generation. This work evaluated the potential energy generated from AD applied to vinasse within the context of an integrated 1G2G sugarcane biorefinery. Data from a literature survey based the scenario modeling and assessment, including economic and environmental indicators to compare the studied alternatives. AD allowed at least 68% increase of released bagasse for 2G ethanol production compared to 2G base scenario, being able to even double 2G ethanol productivity to 30Lt(-1)cane. Organic matter removal efficiency of vinasse AD played an important role in 2G ethanol production so that higher the efficiency, larger the fraction of bagasse released for ethanol production. Economic indicators showed the unviability of 1G2G sugarcane mill including AD unit when considering the current technologies for 2G ethanol production in view of their high operational costs; however, with the envisaged technologies for 2025, the internal rate of return (IRR) of 14.3 and 17% was achieved, when considering conservative and optimistic data for vinasse AD efficiency, respectively. The results evidenced the importance of investment in R\&D especially in 2G ethanol production but also in the AD of vinasse to reach the viability of this business. (AU)

FAPESP's process: 16/16438-3 - Biogas production in integrated 1st and 2nd generation sugarcane biorrefineries: fundamentals and operational aspects of the process
Grantee:Bruna de Souza Moraes
Support Opportunities: Regular Research Grants