Sökning: "Bjarne Holmbom"

Hittade 2 avhandlingar innehållade orden Bjarne Holmbom.

1. 1. The warship Vasa : A Study of Lignin, Extractives and Acids in the oak wood

   Författare :Dina Dedic; Monica Ek; Bjarne Holmbom; Sigbritt Karlsson; KTH; []
   Nyckelord :;

   Sammanfattning : The oak wood timbers of the 17th century Swedish warship Vasa are weak. The weakening has been attributed to cellulose degradation, which is more extensive in the interior of the timbers compared to the surface regions. Further, the mechanism of cellulose degradation was attributed to oxidative reactions involving iron as a catalyst. LÄS MER

3. 2. Selective Separation Of Wood Components In Internal Process Waters Originating From Mechanical Pulping

   Författare :Dariusz Zasadowski; Magnus Norgren; Bjarne Holmbom; Mittuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flotation; foaming agents; chelating surfactant; TMP process water; pitch control; internal cleaning stage; hemicellulose recovery; anti‐solvents; solvents; precipitation;

   Sammanfattning : Dissolved and Colloidal substances (DSC) and metals are released from woodduring thermomechanical pulp (TMP) production. These components have atendency to accumulate in process waters, as the water circulation systems inintegrated paper mills are closed. LÄS MER