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  • A novel rotation generator of hydrodynamic cavitation for the fibeillation of long conifer fibers in paper production
    Kosel, Janez ; Šinkovec, Andrej, 1976- ; Dular, Matevž
    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%).
    Source: Ultrasonics Sonochemistry. - ISSN 1350-4177 (Vol. 59, Dec. 2019, str. 1-9)
    Type of material - article, component part ; adult, serious
    Publish date - 2019
    Language - english
    COBISS.SI-ID - 514097195

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S1350417719304353
    Repository of the University of Ljubljana – RUL
    DOI

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