Fractionation of nanocellulose by foam filter

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    8 Citations (Scopus)

    Abstract

    The foam fractionation method was applied for nanocellulose. Experiments were carried out with enzymatically pretreated nano-fibrillated cellulose (NFC) from softwood, as well as commercial products. Narrow channels (plateaus) between bubbles prevent the flow of coarse particles along the water, so that foam acts like a filter. The advantage of the method is no risk of clogging, which could be a big problem for conventional filters or screens. Mean particle size (effective size by means of dynamic light scattering measurement) was reduced by foam fractionation, and the reduction range depended on the cellulose grade and the type of surfactant. The yield turned out to be low, probably because of particle aggregation due to the interaction with surfactant.
    Original languageEnglish
    Pages (from-to)1771-1776
    Number of pages5
    JournalSeparation Science and Technology
    Volume47
    Issue number12
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Foam
    • fractionation
    • microcellulose
    • nanocellulose

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