Title:
Biogas Production in Integrated 1st and 2nd Generation Sugarcane Biorefineries: Energy and Economic Prospects
Author(s):
Manochio, C., Rodriguez, R.P., Moraes, B.S.
Document(s):
Paper
Slide presentation
Abstract:
This work evaluated the potential energy generated from anaerobic digestion (AD) applied to vinasse within the context of an integrated first and second-generation (1G2G) sugarcane biorefinery. Data from a literature survey based the scenarios modelling and assessment, including economic 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 30 L t-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% were 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.
Keywords:
anaerobic digestion, bioenergy, bioethanol, sugar cane bagasse, wastewater treatment, lignocellulosic sources
Topic:
Biomass Resources
Subtopic:
Integrated biomass production for energy purposes
Event:
26th European Biomass Conference and Exhibition
Session:
1BO.9.4
Pages:
114 - 117
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-1BO.9.4
Price:
FREE
