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Contribution of Structural Modification to Enhanced Enzymatic Hydrolysis and 3-D Structural Analysis of Steam-Exploded Wood using X-Ray Tomography

Muhammad Muzamal (Institutionen för kemi och kemiteknik, Kemisk apparatteknik) ; Jenny Bååth Arnling (Institutionen för biologi och bioteknik, Industriell bioteknik) ; Lisbeth Olsson (Institutionen för biologi och bioteknik, Industriell bioteknik) ; Anders Rasmuson (Institutionen för kemi och kemiteknik, Kemisk apparatteknik)
Bioresources (1930-2126). Vol. 11 (2016), 4, p. 8509-8521.
[Artikel, refereegranskad vetenskaplig]

Steam explosion pretreatment modifies both the chemical and physical structures of a biomass. Chemical modifications are generated during the treatment of biomass with steam at high temperature. Physical modifications are created during the explosion step, which produces disintegrated and defibrillated biomass. In this study, the contribution of each modification to an increase in enzymatic hydrolysis has been studied. It was found that both physical and chemical modifications contributed to an increase in enzymatic hydrolysability. Additionally, high resolution X-ray tomography was performed to identify the structural modification created during the steam explosion process. Comparison of the 3-D microstructure of a steam-exploded wood sample with an untreated wood sample revealed that several kinds of cracks were created during the explosion step, and the micro-structure of the wood sample was vigorously destroyed.

Nyckelord: Enzymatic hydrolysis, Steam explosion, Steam treatment, 3D structure, X-ray tomography, aspen wood, explosion pretreatment, lignin, size, bioethanol, chemistry, cellulose, softwood, poplar, fiber, Materials Science



Denna post skapades 2017-02-15.
CPL Pubid: 248153

 

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