Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale

Anuj K. Chandel, Juliana Q. Albarelli, Diego T. Santos, Shishir Chundawat, Munish Puri, Maria Angela A. Meireles

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Biorefineries can upgrade waste lignocellulosic biomass (LB) into soluble (C5 and C6) sugars that can be fermented into second-generation (2G) ethanol-based biofuels and a range of valuable byproducts derived from lignin. Research advances made in various laboratories worldwide have not been easy to translate into large-scale operations. Here, we performed a simple economic analysis of cellulosic ethanol production from a stand-alone 100ton dry sugarcane bagasse per day process, from a Brazilian market perspective, based on current state-of-the-art biorefinery process technologies. Economic analysis reveals that the cost of manufacturing (COM) of 2G ethanol in an annexed Brazilian facility is close to USD 1.33 L−1. Fixed and variable costs contributed 57% and 24% in COM of 2G ethanol with a high payback period of ~31 years and a negative net present value (NPV). Further cost reduction can be realized by continuous R&D efforts aiming for innovation in new processing paradigms for cellulosic biorefineries. The key market players (Poet-DSM, DuPont, Abengoa, Beta Renewables, Raizen, Granbio, Praj, etc.) and other new emerging players (Global Yeast, Taurus Energy, Leaf, Mascoma-Lallemand) working on ethanologen development, and cellulase producers (Novozyme, Metgen), should also develop partnerships / joint ventures to establish a sustainable business model to develop cost-competitive 2G ethanol production from bagasse in Brazil. This paper presents additional commentary and analysis with pertinent information about the commercialization of integrated 2G ethanol biorefineries processing sugarcane bagasse, from a Brazilian perspective.

Original languageEnglish (US)
Pages (from-to)994-1014
Number of pages21
JournalBiofuels, Bioproducts and Biorefining
Volume13
Issue number4
DOIs
StatePublished - Jul 1 2019

Fingerprint

Cellulosic ethanol
Bagasse
Ethanol
Economic analysis
Costs
Biofuels
Cellulase
Lignin
Processing
Cost reduction
Sugars
Yeast
Byproducts
Biomass
Innovation
bagasse
Industry

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Renewable Energy, Sustainability and the Environment

Keywords

  • biorefinery
  • cellulosic ethanol
  • commercialization
  • economic analysis
  • enzymatic hydrolysis
  • pretreatment
  • scale up

Cite this

Chandel, Anuj K. ; Albarelli, Juliana Q. ; Santos, Diego T. ; Chundawat, Shishir ; Puri, Munish ; Meireles, Maria Angela A. / Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale. In: Biofuels, Bioproducts and Biorefining. 2019 ; Vol. 13, No. 4. pp. 994-1014.
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Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale. / Chandel, Anuj K.; Albarelli, Juliana Q.; Santos, Diego T.; Chundawat, Shishir; Puri, Munish; Meireles, Maria Angela A.

In: Biofuels, Bioproducts and Biorefining, Vol. 13, No. 4, 01.07.2019, p. 994-1014.

Research output: Contribution to journalArticle

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