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Ionic-liquid pretreatment of cassava residues for the cogeneration of fermentative hydrogen and methane.
- Source :
-
Bioresource technology [Bioresour Technol] 2017 Mar; Vol. 228, pp. 348-354. Date of Electronic Publication: 2017 Jan 03. - Publication Year :
- 2017
-
Abstract
- An ionic liquid of N-methylmorpholine-N-oxide (NMMO) was used to effectively pretreat cassava residues for the efficient enzymatical hydrolysis and cogeneration of fermentative hydrogen and methane. The reducing sugar yield of enzymolysed cassava residues with NMMO pretreatment improved from 36 to 42g/100g cassava residues. Scanning electron microscopy images revealed the formation of deep grooves (∼4μm wide) and numerous pores in the cassava residues pretreated with NMMO. X-ray diffraction patterns showed that the crystallinity coefficient of NMMO-pretreated cassava residues decreased from 40 to 34. Fourier transform infrared spectra indicated that crystal cellulose I was partially transformed to amorphous cellulose II in the NMMO-pretreated cassava residues. This transformation resulted in a reduced crystallinity index from 0.85 to 0.77. Hydrogen yield from the enzymolysed cassava residues pretreated with NMMO increased from 92.3 to 126mL/gTVS, and the sequential methane yield correspondingly increased from 79.4 to 101.6mL/g TVS.<br /> (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Subjects :
- Carbohydrate Metabolism drug effects
Chromatography, High Pressure Liquid
Darkness
Manihot drug effects
Manihot ultrastructure
Solubility
Spectroscopy, Fourier Transform Infrared
X-Ray Diffraction
Cyclic N-Oxides pharmacology
Fermentation drug effects
Hydrogen metabolism
Ionic Liquids pharmacology
Manihot chemistry
Methane biosynthesis
Morpholines pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 228
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 28088097
- Full Text :
- https://doi.org/10.1016/j.biortech.2016.12.107