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Review
. 2023 May 25;9(6):e16604.
doi: 10.1016/j.heliyon.2023.e16604. eCollection 2023 Jun.

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Dhanashri S Pendse  1 , Minal Deshmukh  2 , Ashwini Pande  3
Affiliations
Review

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Dhanashri S Pendse et al. Heliyon. .

Erratum in

Abstract

Lignocellulosic biomass is the generally explored substrate to produce bioethanol for environmental sustainability due to its availability in abundance. However, the complex network of cellulose-hemicellulose-lignin present in it makes its hydrolysis as a challenging task. To boost the effectiveness of conversion, biomass is pre-treated before enzymatic hydrolysis to alter or destroy its original composition. Enzymes like Cellulases are widely used for breaking down cellulose into fermentable sugars. Enzymatic hydrolysis is a complex process involving many influencing factors such as pH, temperature, substrate concentration. This review presents major four pre-treatment methods used for hydrolysing different substrates under varied reaction conditions along with their mechanism and limitations. A relative comparison of data analysis for most widely studied 10 kinetic models is briefly explained in terms of substrates used to get the brief insight about hydrolysis rates. The summary of pre-treatment methods and hydrolysis rates including cellulase enzyme kinetics will be the value addition for upcoming researchers for optimising the hydrolysis process.

Keywords: Cellulase enzyme; Environmental sustainability; Kinetic models; Lignocellulosic biomass; Pre-treatment.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper

Figures

Fig. 1
Fig. 1
Socio-economic and environmental benefits of bioethanol production.
Fig. 2
Fig. 2
Shows the diagrammatic representation of the biofuel production process.
Fig. 3
Fig. 3
The cell wall of lignocellulosic biomass, including its makeup and structure [38].
Fig. 4
Fig. 4
Different pre-treatment methods used to treat lignocellulosic biomass.
Fig. 5
Fig. 5
Different factors to be considered for selecting a pre-treatment method.
Fig. 6
Fig. 6
Reaction scheme for modelling cellulose hydrolysis [124].
See this image and copyright information in PMC

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