Search for dissertations about: "kraft pulps"
Showing result 1 - 5 of 55 swedish dissertations containing the words kraft pulps.
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1. On the importance of oxidizable structures in bleached kraft pulps
Abstract : After cooking, kraft pulps always contain not only residual lignin but also significant amounts of hexenuronic acid and other non-lignin structures oxidizable by permanganate under the standard kappa number determination conditions. These here referred to as false lignin. READ MORE
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2. Delignification and bleachability of kraft pulps pretreated with nitrogen dioxide
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3. Oxidizable structures in kraft pulps : chemical properties and bleaching response
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4. Some aspects on TCF-bleachability of softwood alkaline pulps
Abstract : The bleachability of softwood oxygen delignified pulps has been studied, i.e. the ease (requirement of bleaching chemicals) with which the pulps can be brightened to a target brightness in totally chlorine free (TCF) bleaching stages, including hydrogen peroxide, ozone and chelating agent stages. READ MORE
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5. TCF Bleaching of Softwood Kraft Pulp. Metal Management Procedures
Abstract : The aim of this work has been to increase knowledge of the influence of the metal ion content in softwood kraft pulp on peroxide bleaching and to investigate the effects of different metal management procedures at various stages in the production of TCF pulps (i.e. READ MORE