Electrochemically generated biocides for controlling contamination in papermaking

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Feasibility of electrochemically generated biocides in papermaking was evaluated in pilot scale trials. The trials indicated that electrochemically generated biocides prevent microbial growth and proliferation in broke systems, as well as in water circulations. The spoilage of broke can be delayed, and already spoiled broke can be recovered using these biocides. The improved broke quality increases the stability of the paper machine and, consequently, less broke is produced. The biocides can be added to water or pulp, and they have hardly any negative effect on the process or the end product. The presence of reducing compounds may cause limitations in the use of these oxidative biocides. It was observed that electrochemically generated biocide was also efficient against heat-resistant spores. However, the biocide was less efficient against spores as compared to vegetative cells, both aerobic and anaerobic, especially when the spore numbers were higher than 104 cfu/ml. Onsite oxidant production eliminates the transportation and storage of biocides. Moreover, due to the short time between the production and use, the degradation of the active compounds can be minimized.
    Original languageEnglish
    Pages (from-to)2664-2680
    Number of pages17
    JournalBioResources
    Volume5
    Issue number4
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Oxidizing biocide
    • Bacteria
    • papermaking
    • white water
    • broke
    • microbial control
    • electrochemical treatment
    • wet end chemistry

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