A novel rotation generator of hydrodynamic cavitation for the fibeillation of long conifer fibers in paper production

Kosel, Janez (author), Šinkovec, Andrej (author), Dular, Matevž (author)

Refining of cellulose pulp is a critical step in obtaining high quality paper characteristics, however, this process is slow and costly especially for refining longer conifer fibers which are the preferred source for high quality paper production and give the paper its strength. In this study, we have applied a novel rotation generator of hydrodynamic cavitation for refining conifer rich pulp samples. Our results show that the device is capable of generating intense shear forces and multiple zones of developed cavitation and is successful in increasing the drainage rate of high consistency pulp (3%). The paper produced by means of the obtained pulp has higher quality because of its higher tensile index (50.5 kN m kg-1) and burst index (3 kPa m2 g-1). These physical parameters were sufficient for newsprint paper and other paper/board quality manufacture. In addition, this laboratory scale rotation generator proved to be economically efficient in comparison to the routinely employed laboratory beaters. To our knowledge, this is the first example of using hydrodynamic cavitation for the refinement of softwood fiber pulp of standard industrial consistencies (3%).

• Language: English
• Keywords: rotational cavitation generator, hydrodynamic cavitation, drainability rate, tensile index, burst index, papermaking fibres
• Work type: Journal
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2019
• Number of pages: Str. 1-9
• Numbering: Vol. 59, art. 104721
• PID: 20.500.12556/RUL-126373
• UDC: 532.528:676.026(045)
• ISSN on article: 1350-4177
• DOI: 10.1016/j.ultsonch.2019.104721
• COBISS.SI-ID: 514097195
• Publication date in RUL: 19.04.2021

Record is a part of a journal

• Title: Ultrasonics sonochemistry
• Shortened title: Ultrason. sonochem.
• Publisher: Elsevier
• ISSN: 1350-4177
• COBISS.SI-ID: 707668

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 19.04.2021

Secondary language

• Language: Slovenian
• Keywords: rotacijski generator, hidrodinamska kavitacija, stopnja drenaže, natezni indeks, razpočni indeks, vlakna, papirna inustrija