Výsledky vyhledávání - "Dominique Lachenal"

Akademický článek

Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution

Autor: Gloria I. Ngene, Jean-Claude Roux, Dominique Lachenal

Publikováno v: Carbohydrate Polymer Technologies and Applications, Vol 3, Iss , Pp 100196- (2022)

In this study, we investigated the influence of hemicelluloses removal treatment on the reactivity of the resulting pulp. The idea was to develop treatment strategies consisting of mechanical refining (different refining technologies), chemical treat

Externí odkaz: https://doaj.org/article/c3d63f727c1f4e328664528db549cd3f

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Influence of Hollander beater refining on xylan extraction from hardwood paper pulp by cold caustic extraction and xylanase treatment

Autor: Gloria I. Ngene, Jean-Claude Roux, Dominique Lachenal

Publikováno v: BioResources. 17:908-921

Cellulose fibers’ complex and compact structure hinders the quantitative extraction of residual hemicelluloses from the fiber wall. In this study, hardwood kraft paper pulp was subjected to refining with a Hollander beater at different refining loa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15b2427e311f95906af1e37168954442
https://doi.org/10.15376/biores.17.1.908-921

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Akademický článek

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Akademický článek

Formation of Carbonyl and Carboxyl Groups on Cellulosic Pulps: Effect on Alkali Resistance

Autor: Jordan Perrin, Frédéric Pouyet, Christine Chirat, Dominique Lachenal

Publikováno v: BioResources, Vol 9, Iss 4, Pp 7299-7310 (2014)

Ozone bleaching generates carbonyl groups on the cellulose polymer when applied to unbleached kraft pulps. This suggests that pulp fully bleached with a totally chlorine-free (TCF) sequence may contain more oxidized groups than standard elemental chl

Externí odkaz: https://doaj.org/article/056d1ef9b316454eb8816dab9b545c2b

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Akademický článek

Minimizing viscosity loss during totally chlorine-free bleaching of hardwood kraft pulp

Autor: Frédéric Pouyet, Dominique Lachenal, Satyajit Das, Christine Chirat

Publikováno v: BioResources, Vol 8, Iss 1, Pp 238-249 (2013)

By applying increasing amounts of ozone (Z stage bleaching) on eucalyptus oxygen-delignified pulps, it was observed that both lignin and hexenuronic acids (HexA) are attacked early during the treatment. While the HexA were progressively removed, howe

Externí odkaz: https://doaj.org/article/d0f0c8b14ea04f37abb7778392385436

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Use of UV resonance Raman spectroscopy for assessing the brightness stability of ozone TCF bleached pulp

Autor: Jordan Perrin, Dominique Lachenal, Estefania Isaza Ferro, Etienne Montet, Christine Chirat

Publikováno v: Holzforschung. 74:605-613

This study intends to explain the difference in brightness stability between hardwood ECF and TCFz kraft pulps bleached by DEpDD and A(ZEo)(ZEo)(ZP) sequences respectively, using UV Resonance Raman (UVRR) spectroscopy. The brightness stability of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13bb55f69f9e32c288a2490446db5919
https://doi.org/10.1515/hf-2019-0275

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Periodical

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Characterization of enzyme-resistant xylooligosaccharides extracted from hardwood chips by pre-hydrolysis and further depolymerized by enzymatic treatment

Autor: Dominique Lachenal, Christine Chirat, Valentin Guigon, Laure Fort

Publikováno v: Holzforschung
Holzforschung, De Gruyter, 2020, 74 (2), pp.123-130. ⟨10.1515/hf-2018-0249⟩

Xylose-rich solutions were produced by applying water pre-hydrolysis on mixed hardwood chips followed by an enzymatic treatment of the filtrate. The liquid phase obtained after water pre-hydrolysis contained xylose and xylans as the major components

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01f52645e6d6a57a54e3ef74e49b0154
https://hal.archives-ouvertes.fr/hal-03322786

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Extraction of phenolic compounds from sulfur-free black liquor thanks to hydrothermal treatment before the production of syngas for biofuels

Autor: Geert Haarlemmer, Christine Chirat, Anne Roubaud, Hélène Curmi, Marine Peyrot, Dominique Lachenal

Publikováno v: The Journal of Supercritical Fluids. 181:105489

Nowadays, black liquor, the liquid residue from cooking step in pulp industry is burnt to produce energy for the plant. But as the pulp mills have energy in excess, higher added values applications for black liquor may be looked for. Hydrothermal tre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68a02e9931709d04ccc521a9767aba68
https://doi.org/10.1016/j.supflu.2021.105489

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Brightness stability of eucalyptus-dissolving pulps: effect of the bleaching sequence

Autor: Jordan Perrin, Dominique Lachenal, Christine Chirat

Publikováno v: Holzforschung
Holzforschung, De Gruyter, 2017, 71 (7-8), pp.625-631. ⟨10.1515/hf-2016-0208⟩

The factors governing the brightness reversion (BR) of dissolving pulps under heat exposure are investigated. Carbonyl (CO) groups were artificially introduced on fully bleached pulp by sodium hypochlorite (NaClO) oxidation. It was demonstrated that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1709b6e3e0bb7cb250a5d6d5a5ede998
https://doi.org/10.1515/hf-2016-0208

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