Page 91 - Lignocellulosic Biomass to Liquid Biofuels

CHAPTER 3

Bioconversion of lignocellulosic

biomass to bioethanol

and biobutanol

1
1
Alessandra Verardi , Catia Giovanna Lopresto ,
2
1
Alessandro Blasi , Sudip Chakraborty and Vincenza Calabrò 1
1
Department of Computer Engineering, Modeling, Electronics and Systems Engineering (DIMES),
University of Calabria, Rende, Italy
2
ENEA—Italian National Agency for New Technologies, Energy and Sustainable Economic Development,
Energy Technologies Department, Research Centre of Trisaia, Rotondella, Italy
Contents
3.1 Introduction 67
3.2 Suitable strains and their productivity 71
3.2.1 Bioethanol 73
3.2.2 Biobutanol 78
3.3 Enzymatic hydrolysis 80
3.3.1 Enzymatic hydrolysis of lignocellulosic biomass 80
3.3.2 Traditional downstream purification 83
3.3.3 Possibilities of application of membrane in bioethanol production 83
3.3.4 Final comments 89
3.4 Simultaneous saccharification and fermentation 89
3.5 Effect of fermentation inhibitors 96
3.5.1 Furfural and 5-hydroxymethylfurfural 97
3.5.2 Weak acids 100
3.5.3 Phenols 104
3.5.4 Interaction effects 105
3.5.5 Other inhibitor compounds 106
3.5.6 Strategies for minimizing inhibitor effects 106
3.6 Conclusion 108
References 108
Further reading 124

3.1 Introduction
For the last 25 years domestic sources of fuels, need of renewable energy,
and chemicals have become highly significant [1]. Bioethanol has the

Lignocellulosic Biomass to Liquid Biofuels © 2020 Elsevier Inc.
DOI: https://doi.org/10.1016/B978-0-12-815936-1.00003-4 All rights reserved. 67