Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Hans Theliander"'
Publikováno v:
Membranes, Vol 13, Iss 10, p 834 (2023)
Recent studies on membrane fouling have made considerable progress in reducing its adverse effects. However, a lack of comprehensive studies focusing on the underlying fouling mechanisms remains. This work aims to address a part of this gap by invest
Externí odkaz:
https://doaj.org/article/e08e589b680e4c08b9f2a80cf071d755
Publikováno v:
Holzforschung. 77:318-325
Oxidation of kraft pulp using hydrogen peroxide under mild acidic conditions can be applied in order to obtain new functionality of the fibres, in the form of carbonyl groups. The hydrogen peroxide concentration must, however, be higher than consumed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0003d7e4064162bcf214a837c0980957
https://doi.org/10.1515/hf-2022-0184
https://doi.org/10.1515/hf-2022-0184
Publikováno v:
Physical Chemistry Chemical Physics. 25:6326-6332
Capillary forces between cellulose channels depend on the direction and magnitude of an applied electric field. An electric field applied parallel to a solid–liquid interface increases the capillary force while a perpendicular field reduces it.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0e73e001d6367470b1c5858852f8838
https://doi.org/10.1039/d2cp05563e
https://doi.org/10.1039/d2cp05563e
Publikováno v:
Nordic Pulp & Paper Research Journal. 37:330-337
The objective of this study is to gain further insight into the compositional and physical changes of kraft pulp caused by oxidation with hydrogen peroxide under acidic conditions. A softwood kraft pulp has been subjected to varying degrees of oxidat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc605b9847e8e1428a461b8574afa7fa
https://doi.org/10.1515/npprj-2022-0020
https://doi.org/10.1515/npprj-2022-0020
Autor:
Anders Ahlbom, Marco Maschietti, Rudi Nielsen, Huyen Lyckeskog, Merima Hasani, Hans Theliander
Publikováno v:
Energies, Vol 14, Iss 4, p 932 (2021)
In this study, Kraft lignin was depolymerised by hydrothermal liquefaction in near-critical water (290–335 °C, 250 bar) using Na2CO3 as an alkaline catalyst. Isopropanol was used as a co-solvent with the objective of investigating its capping effe
Externí odkaz:
https://doaj.org/article/179b646acc574a9db52658bd75ac87df
Publikováno v:
Holzforschung. 76:611-621
A new laboratory reactor to perform in situ studies of structural changes in wood during soda pulping using synchrotron X-ray tomography is presented. The reactor is of recirculation type to provide stable reaction conditions and mimic the industrial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5694c75d0e91c77ed97bb374df415f82
https://doi.org/10.1515/hf-2021-0204
https://doi.org/10.1515/hf-2021-0204
Publikováno v:
Ahlbom, A, Maschietti, M, Nielsen, R, Hasani, M & Theliander, H 2023, ' On the hydrothermal depolymerisation of kraft lignin using glycerol as a capping agent ', Holzforschung, vol. 77, no. 3, pp. 159-169 . https://doi.org/10.1515/hf-2022-0146
Depolymerisation of kraft lignin under hydrothermal conditions was investigated at short residence times (1–12 min) with glycerol being used as a capping agent. The weight average molecular weight (M w) of the products decreased within the first mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c57f321372e8aa73add5c1f043baa7e4
https://vbn.aau.dk/da/publications/6ef308b2-93cd-4772-b24d-bf9e4e10c45f
https://vbn.aau.dk/da/publications/6ef308b2-93cd-4772-b24d-bf9e4e10c45f
Publikováno v:
Industrial & Engineering Chemistry Research. 60:17663-17676
An electroassisted filtration technique has been employed to improve dewatering of a suspension of microfibrillated cellulose (MFC) produced via 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-mediat...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a618deed1741209c8bdb5ee20014bfe
https://doi.org/10.1021/acs.iecr.1c03749
https://doi.org/10.1021/acs.iecr.1c03749
Autor:
Weizhen Zhu, Hans Theliander
Publikováno v:
BioResources, Vol 10, Iss 1, Pp 1696-1714 (2015)
Extracting lignin from black liquor is an attractive option in modern pulp mills as a unit process for a combined biorefinery. The lignin obtained can be utilized as solid fuel or other high-value added products. The precipitation equilibrium of kraf
Externí odkaz:
https://doaj.org/article/297909b3062340738aeea711fa71a424