Bioethanol Production from Woody Biomass: Recent Advances on the Effect of Pretreatments on the Bioconversion Process and Energy Yield Aspects

Maria El Hage, Nicolas Louka, Sid-Ahmed Rezzoug, Thierry Maugard, Sophie Sablé, Mohamed Koubaa (), Espérance Debs and Zoulikha Maache-Rezzoug
Additional contact information
Maria El Hage: Laboratoire LaSIE, UMR-CNRS 7356, La Rochelle Université, Avenue Michel Crépeau, 17042 La Rochelle, France
Nicolas Louka: Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut 1104 2020, Lebanon
Sid-Ahmed Rezzoug: Laboratoire LaSIE, UMR-CNRS 7356, La Rochelle Université, Avenue Michel Crépeau, 17042 La Rochelle, France
Thierry Maugard: Laboratoire LIENSs, UMR-CNRS 7266, La Rochelle Université, Avenue Michel Crépeau, 17042 La Rochelle, France
Sophie Sablé: Laboratoire LIENSs, UMR-CNRS 7266, La Rochelle Université, Avenue Michel Crépeau, 17042 La Rochelle, France
Mohamed Koubaa: Université de Technologie de Compiègne, ESCOM, TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, CS 60319, 60203 Compiègne CEDEX, France
Espérance Debs: Department of Biology, Faculty of Arts and Sciences, University of Balamand, P.O. Box 100, Tripoli 1300, Lebanon
Zoulikha Maache-Rezzoug: Laboratoire LaSIE, UMR-CNRS 7356, La Rochelle Université, Avenue Michel Crépeau, 17042 La Rochelle, France

Energies, 2023, vol. 16, issue 13, 1-31

Abstract: As greenhouse gas emissions are continuously increasing, research is now privileging greener and more sustainable human activities. An attractive strategy in the pursuit of sustainability is the valorization of lignocellulosic biomasses for the production of bioethanol. This approach relies on the bioconversion of wood and agricultural waste, which are abundant globally. They represent considerable sources of fermentable sugars that can be recovered through enzymatic hydrolysis. However, the presence of lignin in wood waste makes it more recalcitrant to enzymatic hydrolysis, and reduces the efficiency of the bioconversion process. Therefore, a pretreatment preceding hydrolysis is highly necessary in order to disrupt the resistant structure of woody biomass. The type and severity of the pretreatment affect the outcomes of the hydrolysis and fermentation steps, just as they strongly influence the overall process costs. Given this context, bioenergy production from this biomass is a promising alternative method of sustainably responding to energy demands while reducing the amounts of waste left in nature. The aim of this review is to thoroughly compare the recent bioconversion processes performed on woody substrates over the past five years, with a focus on thermomechanical pretreatments. Moreover, this review will discuss the outcomes of their separate steps, their impact on the overall process, and their energetic aspects.

Keywords: bioconversion; bioethanol; enzymatic hydrolysis; renewable energy; thermomechanical pretreatment; woody biomasses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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