Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species
The liquefaction rates and kinetics of nut shells of different Camellia species in PEG400/glycerol/H2SO4 liquefying solvent were investigated. Changes in major components including cellulose, hemicellulose, and lignin as well as cellulose crystallinity of the nut shells were determined. The composit...
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North Carolina State University
2016-10-01
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Series: | BioResources |
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Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_4_9956_Zhang_Polyol_Liquefaction_Nut_Shells |
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author | Jinping Zhang Menghao Du Lisong Hu |
author_facet | Jinping Zhang Menghao Du Lisong Hu |
author_sort | Jinping Zhang |
collection | DOAJ |
description | The liquefaction rates and kinetics of nut shells of different Camellia species in PEG400/glycerol/H2SO4 liquefying solvent were investigated. Changes in major components including cellulose, hemicellulose, and lignin as well as cellulose crystallinity of the nut shells were determined. The compositions of the liquefaction residues were analyzed. Results indicated that, under the same conditions, the liquefaction rates of nut shells of different Camellia species were noticeably different and the PEG400/glycerol/H2SO4 liquefaction agent was not suitable for the liquefaction of the nut shells of all Camellia species. The burst liquefaction of Camellia nut shells (CNSs) that occurred during the first stage was due to the rapid degradation of hemicellulose, acid-soluble lignin, and amorphous cellulose. The liquefaction during the second stage became very slow, mostly because the swelling and decomposition of crystalline cellulose was very difficult to achieve with the liquefying agent and the liquefaction products inhibited liquefaction at later stages. The liquefaction residues of CNSs were composed of crystalline cellulose, small amounts of hemicellulose, acid-insoluble lignin, and ash. Ash was partially dissolved in the liquefying agent. The liquefaction rates of all CNSs tested in this study showed linear relationships with time, with coefficients of determination (R2) greater than 0.7082, indicating that the liquefaction of CNS was a pseudo-first-order reaction. |
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issn | 1930-2126 1930-2126 |
language | English |
last_indexed | 2024-12-23T06:59:14Z |
publishDate | 2016-10-01 |
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spelling | doaj.art-e4ea939bedbd43068bcfe0c14d08b8d92022-12-21T17:56:14ZengNorth Carolina State UniversityBioResources1930-21261930-21262016-10-011149956996910.15376/biores.11.4.9956-9969Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia SpeciesJinping Zhang0Menghao Du1Lisong Hu2Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang, Zhejiang, 311400, P. R. China; ChinaResearch Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang, Zhejiang, 311400, P. R. China; ChinaResearch Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang, Zhejiang, 311400, P. R. China; ChinaThe liquefaction rates and kinetics of nut shells of different Camellia species in PEG400/glycerol/H2SO4 liquefying solvent were investigated. Changes in major components including cellulose, hemicellulose, and lignin as well as cellulose crystallinity of the nut shells were determined. The compositions of the liquefaction residues were analyzed. Results indicated that, under the same conditions, the liquefaction rates of nut shells of different Camellia species were noticeably different and the PEG400/glycerol/H2SO4 liquefaction agent was not suitable for the liquefaction of the nut shells of all Camellia species. The burst liquefaction of Camellia nut shells (CNSs) that occurred during the first stage was due to the rapid degradation of hemicellulose, acid-soluble lignin, and amorphous cellulose. The liquefaction during the second stage became very slow, mostly because the swelling and decomposition of crystalline cellulose was very difficult to achieve with the liquefying agent and the liquefaction products inhibited liquefaction at later stages. The liquefaction residues of CNSs were composed of crystalline cellulose, small amounts of hemicellulose, acid-insoluble lignin, and ash. Ash was partially dissolved in the liquefying agent. The liquefaction rates of all CNSs tested in this study showed linear relationships with time, with coefficients of determination (R2) greater than 0.7082, indicating that the liquefaction of CNS was a pseudo-first-order reaction.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_4_9956_Zhang_Polyol_Liquefaction_Nut_ShellsChemical compositionCamellia nut shellLiquefactionCellulose Crystallinity indexLiquefaction kinetics |
spellingShingle | Jinping Zhang Menghao Du Lisong Hu Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species BioResources Chemical composition Camellia nut shell Liquefaction Cellulose Crystallinity index Liquefaction kinetics |
title | Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species |
title_full | Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species |
title_fullStr | Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species |
title_full_unstemmed | Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species |
title_short | Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species |
title_sort | factors influencing polyol liquefaction of nut shells of different camellia species |
topic | Chemical composition Camellia nut shell Liquefaction Cellulose Crystallinity index Liquefaction kinetics |
url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_4_9956_Zhang_Polyol_Liquefaction_Nut_Shells |
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