Academic literature on the topic 'Hemicellulose. Extraction (Chemistry)'

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Journal articles on the topic "Hemicellulose. Extraction (Chemistry)"

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RUNGE, TROY, and CHUNHUI ZHANG. "Hemicellulose extraction and its effect on pulping and bleaching." October 2013 12, no. 10 (2013): 45–52. http://dx.doi.org/10.32964/tj12.10.45.

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A potential biorefinery is envisioned to use the hemicellulose portion of biomass to create transportation fuels or chemicals and the cellulose portion for fiber to be used in papermaking. To understand the effect on hemicellulose removal to pulpability and bleachability, a liquid hot water extraction was performed on two types of biomass with high hemicellulose content: poplar and miscanthus. The resulting materials were pulped using either a soda anthraquinone or kraft process. The pulps were then oxygen delignified and bleached with an elemental chlorine free sequence. The results demonstra
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MATEOS-ESPEJEL, ENRIQUE, THEODORE RADIOTIS, and NACEUR JEMAA. "Implications of converting a kraft pulp mill to a dissolving pulp operation with a hemicellulose extraction stage." TAPPI Journal 12, no. 2 (2013): 29–38. http://dx.doi.org/10.32964/tj12.2.29.

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Global demand for dissolving pulp has been increasing at a remarkable pace over the last few years. A shortage in cotton and the expansion of the textile, hygiene, and health product markets are behind this booming demand. The Canadian pulp and paper industry has entered these markets by converting several paper-grade pulp mills to dissolving pulp producers. In the kraft process, part of the hemicellulose remains with the pulp after cooking and the rest is burnt in the recovery boiler to produce energy. In dissolving pulp mills, most of the hemicellulose must be removed from the wood chips in
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Ding, Jinhua, Chang Geun Yoo, Yunqiao Pu, et al. "Cellulolytic enzyme-aided extraction of hemicellulose from switchgrass and its characteristics." Green Chemistry 21, no. 14 (2019): 3902–10. http://dx.doi.org/10.1039/c9gc00252a.

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LUO, JIE, JOSEPH M. GENCO, and HAIXUAN ZOU. "Extraction of hardwood biomass using dilute alkali." June 2012 11, no. 6 (2012): 19–27. http://dx.doi.org/10.32964/tj11.6.19.

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Near neutral hemicellulose extraction involves extracting wood hemicellulose using green liquor before conventional kraft pulping. The objective of this work was to develop correlations that could be used in process design and economic studies. Experimental data are presented for the extraction of northeast hardwood chips using green liquor. The effect of green liquor application rate, liquor-to-wood ratio, and H-factor on the removal of sugars and organic acids is discussed. Response variables include wood yield, total and soluble lignin, component sugars, acetic acid, lactic acid, formic aci
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Martínez-Abad, Antonio, Nicola Giummarella, Martin Lawoko, and Francisco Vilaplana. "Differences in extractability under subcritical water reveal interconnected hemicellulose and lignin recalcitrance in birch hardwoods." Green Chemistry 20, no. 11 (2018): 2534–46. http://dx.doi.org/10.1039/c8gc00385h.

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Santos, Tamara M., M. Virginia Alonso, Mercedes Oliet, Juan C. Domínguez, Victoria Rigual, and Francisco Rodriguez. "Effect of autohydrolysis on Pinus radiata wood for hemicellulose extraction." Carbohydrate Polymers 194 (August 2018): 285–93. http://dx.doi.org/10.1016/j.carbpol.2018.04.010.

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GHEZZAZ, HAKIM, LUC PELLETIER, and PAUL R. STUART. "Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation." August 2012 11, no. 8 (2012): 17–24. http://dx.doi.org/10.32964/tj11.8.17.

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The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery op
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Vena, P. F., M. P. García-Aparicio, M. Brienzo, J. F. Görgens, and T. Rypstra. "Effect of Alkaline Hemicellulose Extraction on Kraft Pulp Fibers fromEucalyptus Grandis." Journal of Wood Chemistry and Technology 33, no. 3 (2013): 157–73. http://dx.doi.org/10.1080/02773813.2013.773040.

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Alam, Sultan, Noor Rehman, Inamullah Mian, and Hidayat Ullah. "What We Really Know About Biosynthesis of Cellulose from Ficus palmate: A Novel Biomass Production." Zeitschrift für Physikalische Chemie 234, no. 2 (2020): 313–21. http://dx.doi.org/10.1515/zpch-2019-1378.

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AbstractCurrent research attention has been motivated on the successful synthesis of cellulose from biomass waste of Ficus palmate through multistep process i.e. bleaching and alkali treatment to efficiently eradicate impurities, waxy substances like pectin, cutin, waxes, extractives, hemicellulose and lignin from F. palmate. The cellulose obtained was analyzed by using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). The isolated cellulose has high degree of purity and crystallinity (61%) and ther
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Huang, Fang, and Arthur Ragauskas. "Extraction of Hemicellulose from Loblolly Pine Woodchips and Subsequent Kraft Pulping." Industrial & Engineering Chemistry Research 52, no. 4 (2013): 1743–49. http://dx.doi.org/10.1021/ie302242h.

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Dissertations / Theses on the topic "Hemicellulose. Extraction (Chemistry)"

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Chen, Xiaowen. "Hemicellulose Pre-extraction of Hardwood." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/ChenX2009.pdf.

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Tunc, Mehmet Sefik. "Hemicellulose Extraction of Mixed Southern Hardwoods." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/TuncMS2008.pdf.

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Mao, Haibo. "Technical Evaluation of Hardwood Biorefinery Using the "Near-Neutral" Hemicellulose Extraction Process." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/MaoH2007.pdf.

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Mishra, Kunal R. "Extraction of hemicellulose and fabrication of biodegradable polymeric blends." online access from Digital Dissertation Consortium, 2007. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?1458531.

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Farhat, Wissam. "Investigation of hemicellulose biomaterial approaches : the extraction and modification of hemicellulose and its use in value-added applications." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSES032/document.

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L'utilisation de matériaux renouvelables est considérée comme l'un des points clés du développement durable. Les glucides sont facilement biodégradables et ont tendance à se dégrader dans les environnements biologiquement actifs. L'hémicellulose (HC) est l'un des polysaccharides les plus courants, représentant environ 20 à 35% de la biomasse lignocellulosique, et n'a pas encore trouvé sa place dans de larges applications industrielles comme la cellulose, autre ressource forestière. L'hémicellulose est un hétéro-polysaccharide. C'est aussi un substitut vert pour les polyols issus du pétrole ain
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Book chapters on the topic "Hemicellulose. Extraction (Chemistry)"

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Lawther, J. M., R. Sun, and W. B. Banks. "Effects of extraction conditions and alkali type on the yield and neutral sugar composition of wheat straw hemicellulose." In The Chemistry and Processing of Wood and Plant Fibrous Material. Elsevier, 1996. http://dx.doi.org/10.1533/9781845698690.313.

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Conference papers on the topic "Hemicellulose. Extraction (Chemistry)"

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Arshanitsa, Alexandr, Jevgenija Ponomarenko, Maris Lauberts, et al. "Composition of extracts isolated from black alder bark by microwave assisted water extraction." In Research for Rural Development 2020. Latvia University of Life Sciences and Technologies, 2020. http://dx.doi.org/10.22616/rrd.26.2020.013.

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The composition of extracts isolated from black alder bark by ‘green’ microwave assisted water extraction in the temperature range of 70–150 ℃ was studied using the wet chemistry Folin-Ciocalteu method and Py-GC-MS/FID. The composition data were compared with those of the extracts obtained at the same temperature by accelerated solvent extraction (ASE) of bark. It was shown that microwave assisted extraction, compared with ASE, resulted in more significant transition of major cell wall components, including hemicelluloses and phenolics of lignin origination, into the solution. Depending on the
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