Sökning: "ozone bleaching"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden ozone bleaching.
1. Ozone chemistry in aqueous solution : ozone decomposition and stabilisation
Sammanfattning : Ozone is used in many applications in the industry as an oxidising agent for example for bleaching and sterilisation. The decomposition of ozone in aqueous solutions is complex, and is affected by many properties such as, pH, temperature and substances present in the water. LÄS MER
2. Totally chlorine free bleaching of softwood kraft pulp : inhomogeneous ozone bleaching and particle elimination
Sammanfattning : .... LÄS MER
3. On the importance of radical formation in ozone bleaching
Sammanfattning : .... LÄS MER
4. Free radical mediated cellulose degradation
Sammanfattning : This thesis addresses the mechanisms involved in cellulosedegradation in general and Totally Chlorine Free (TCF) bleachingof pulp in particular. The thesis shows that the cellulosedegradation during high consistency ozone bleaching is explainedby free radical chain reactions. LÄS MER
5. Delignification and bleachability of kraft pulps pretreated with nitrogen dioxide
Sammanfattning : .... LÄS MER