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Biomass Conversion and Biorefinery
Published in: Biomass Conversion and Biorefinery 3/2016

01-09-2016 | Original Article

Investigation of organosolv and hot-compressed water pretreatments of rice straw

Authors: Nwe Nwe Win, Felix Weinwurm, Anton Friedl

Published in: Biomass Conversion and Biorefinery | Issue 3/2016

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Abstract

Ethanol organosolv pretreatments followed by hot-compressed water pretreatments of rice straw have been investigated. The formation of monomeric and oligomeric sugar productions, degradation products, and soluble lignin in liquid fraction was analyzed. A solid to liquid ratio of 1:10 (w/w) was used for pretreatments. The organosolv pretreatment was carried out at the temperatures (170, 190, 210 °C) for (0, 30, and 60 min). Hot-compressed water pretreatment was performed at 220 °C for 15 min starting from dried solid residues recovered from organosolv pretreatments. The highest amount of dissolved lignin and xylan (oligosaccharides) in liquor was 64.6 mg/g and 0.07 % at 190 °C for 60 min, respectively. The production of sugar and dissolved lignin in liquor in hot-compressed water pretreatment was decreased with increase temperature and time, but degradation products increased. The crystallinity index of untreated and treated rice straws was calculated based on X-ray diffraction (XRD) data. The structural feature of untreated and treated rice straws was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).
previous article Hydrothermal carbonization of wheat straw—prediction of product mass yields and degree of carbonization by severity parameter

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Metadata
Title
Investigation of organosolv and hot-compressed water pretreatments of rice straw
Authors
Nwe Nwe Win
Felix Weinwurm
Anton Friedl
Publication date
01-09-2016
Publisher
Springer Berlin Heidelberg
Published in
Biomass Conversion and Biorefinery / Issue 3/2016
Print ISSN: 2190-6815
Electronic ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-015-0188-0

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