Zobrazeno 1 - 10
of 227
pro vyhledávání: '"alkaline pulping"'
Autor:
Toshihiro Komatsu, Tomoya Yokoyama
Publikováno v:
Journal of Wood Science, Vol 67, Iss 1, Pp 1-12 (2021)
Abstract The condensation reaction of lignin is believed to interfere with delignification in alkaline pulping processes, without any clear evidence, which has motivated us to quantitatively revisit it. This paper is the first of a series, and hence
Externí odkaz:
https://doaj.org/article/f94120c801be494cac5ef56d963c354a
Autor:
Osman Taha Elzaki, Tarig Osman Khider, Safaa Hassan Omer, Salaheldin Dafalla Mohieldin, Suhair Kamal Shomeina
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 42, Iss 1, Pp 117-122 (2020)
Pennisetum glaucum pearl millet as whole stalks and core were examined for suitability in the production of pulp and paper. Fiber dimensions, morphological, and chemical characteristics are reported. The pulping trials with soda-AQ, ASAM, and soda
Externí odkaz:
https://doaj.org/article/90c9203a635a4d1b88c2a8bdf665f92e
Akademický článek
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Akademický článek
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Autor:
I. I. Karpunin
Publikováno v:
Наука и техника, Vol 16, Iss 5, Pp 432-436 (2017)
Application of waste liquor at a rate of 25% that contains the used quinone and is applied as an additive has shown that qualitative characteristics of the obtained desired product do not differ from a product while using fresh quinone for pulping of
Externí odkaz:
https://doaj.org/article/55e276c773864b6b8d838fe06afc66a8
Publikováno v:
BioResources, Vol 9, Iss 4, Pp 6193-6204 (2014)
In this study, mixed southern hardwood was pretreated via a hydrothermal process at 160 °C for 1 h. Alkaline pulping was then conducted on both the pretreated and original chips to prepare pulp with Kappa 17 and 30. For the Kappa 30 pulps, oxygen de
Externí odkaz:
https://doaj.org/article/24e9aa6d6cbb4475b406f7ce6adb6a50
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 1569-1581 (2012)
In Part 1 of this series it was observed that one of the eucalypti (EGC 39) was more reactive than the other two in kraft and soda-AQ (SAQ) cooking. However, the lignin in EGC 39 contained equal or less syringyl (S) units than the other two eucalypti
Externí odkaz:
https://doaj.org/article/132f1f4a914f43ba9b0df0650cdf1f31
Publikováno v:
BioResources, Vol 6, Iss 1, Pp 823-840 (2011)
Hardwood soda-AQ pulps are believed to be rich in benzyl sugar ethers (BSE) that can be partially cleaved by aqueous acidic treatments. The aim of this investigation was to evaluate the effect of acidolysis on final bleached brightness for kraft and
Externí odkaz:
https://doaj.org/article/5ce8b5955a6b4f1683d28650122d2b9a
Publikováno v:
BioResources, Vol 3, Iss 1, Pp 91-97 (2008)
Wheat straw (an agricultural by-product) was pulped by an alkaline anthraquinone (AQ) process. Then the straw pulp was treated by high-power ultrasound under different noble-gas (argon, krypton, xenon) combinations. The pulps’ degree of beating and
Externí odkaz:
https://doaj.org/article/e793fda53c2d4cea9d6b264d9157cc80
Publikováno v:
Agustin, M B, Penttilä, P A, Lahtinen, M & Mikkonen, K S 2019, ' Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication ', ACS Sustainable Chemistry & Engineering, vol. 7, no. 24, pp. 19925–19934 . https://doi.org/10.1021/acssuschemeng.9b05445
The production of lignin nanoparticles (LNPs) has opened new routes to the utilization of lignin in advanced applications. The existing challenge, however, is to develop a production method that can easily be adapted on an industrial scale. In this s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02088af532c5acfc76880f2870e3b1e7
https://doi.org/10.1021/acssuschemeng.9b05445
https://doi.org/10.1021/acssuschemeng.9b05445