Operating Experience of Improved ECF Bleaching Sequence
نویسندگان
چکیده
منابع مشابه
Enzymes Improve Ecf Bleaching of Pulp
The delignification efficiency of different laccase enzymes was examined on the eucalyptus Kraft pulp. The laccase enzyme from Trametes versicolor showing the highest delignification efficiency was selected and used in the elemental chlorine-free bleaching sequence for improving the pulp bleachability. An appreciable reduction in chlorine dioxide consumption was also obtained. Further reduction...
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Toxicity and genotoxicity tests were performed on root cells of Allium cepa in order to evaluate wastewater quality following an ECF cellulose bleaching process. The results revealed a toxic effect of the effluent, with inhibition of meristem growth and generally lower values of metaphase, anaphase and telophase indices at pH 10.5 than pH 7 for all effluent concentrations. The genotoxicity effe...
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for pulp and paper manufacture. The science, a proven environmental track record, and strong market demand demonstrate that ECF is without rival in terms of pollution prevention, resource conservation, and product quality. "Chlorine dioxide is a solution to dioxin and other persistent, bio-accumulative, toxic substances in mill waste water." [1] Dr. Robert Huggett, former U.S. EPA Assistant Adm...
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ژورنال
عنوان ژورنال: JAPAN TAPPI JOURNAL
سال: 2003
ISSN: 0022-815X,1881-1000
DOI: 10.2524/jtappij.57.1018