Enzymatic hydrolysis of several pretreated lignocellulosic biomasses: Fractal kinetic modelling.
Acid diluted pretreatment
Enzymatic hydrolysis
Ethanol-water mixture treatment
Fractal kinetic model
Glucose yield
Lignocellulosic biomass
Operating conditions effects
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Dec 2020
Dec 2020
Historique:
received:
23
07
2020
revised:
19
08
2020
accepted:
20
08
2020
pubmed:
6
9
2020
medline:
11
11
2020
entrez:
5
9
2020
Statut:
ppublish
Résumé
Enzymatic hydrolysis of three pre-treated lignocellulosic biomasses -LCB- (wheat straw-WS-, corn stover-CSV- and cardoon stems -CS-) is studied. These biomasses were pre-treated by two methods: diluted sulfuric acid and acid ethanol-water extraction at six severity levels (H values). Pretreated solid fractions were hydrolyzed with commercial enzyme cocktails at standard conditions. A first-order kinetic fractal model was fitted to the experimental results. This model accurately describes the hydrolysis of all biomasses at all pre-treatment conditions studied. The results show that the formal first-order kinetic constant k depends on the biomass nature. The hydrolysis rate increases as the pre-treatment severity does, while the fractal exponent value h decreases. With these pre-treatments, and in terms of k and h, WS is highly reactive and, at medium H with EW pretreatment, highly accessible; CSV has a low reactivity and high accessibility and CS has the lowest reactivity and an increasing accessibility as severity rises.
Identifiants
pubmed: 32889118
pii: S0960-8524(20)31322-5
doi: 10.1016/j.biortech.2020.124050
pii:
doi:
Substances chimiques
lignocellulose
11132-73-3
Lignin
9005-53-2
Cellulase
EC 3.2.1.4
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
124050Informations de copyright
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