Sökning: "extractives"
Visar resultat 36 - 40 av 45 avhandlingar innehållade ordet extractives.
36. Mild Steam Explosion of Norway Spruce
Sammanfattning : The most common wood species in Sweden, and one of the most important renewable raw materials in Northern Europe, is Norway spruce (Picea abies). Today, it is utilized mainly for sawed timber and the production of pulp and paper. LÄS MER
37. Heat treatment of solid wood : effects on absorption, strength and colour
Sammanfattning : Wood is a useful construction material, but it has less desirable properties such as poor durability and poor dimensional stability. These problems can be reduced by using various chemical treatments. Increased environmental awareness has raised the demand for more environmentally friendly methods. LÄS MER
38. Selective Separation Of Wood Components In Internal Process Waters Originating From Mechanical Pulping
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
39. Cost-effective cultivation of lodgepole pine for biorefinery applications
Sammanfattning : The overall objective was to evaluate the scope for the cost-effective cultivation of lodgepole pine (Pinus contorta, PC) stands in a way that would enable early biomass harvesting to supply raw material for biorefineries. Commercial direct seeded PC stands were shown to produce 200 m3/ha of stemwood or 100 tons of d.w. LÄS MER
40. Production and characterisation of pine wood powders from a multi-blade shaft mill
Sammanfattning : Wood is an important raw material for the manufacture of consumer products and in achieving societal goals for greater sustainability. Wood powders are feedstock for many biorefining and conversion techniques, including chemical, enzymatic and thermochemical processes and for composite manufacture, 3D printing and wood pellet production. LÄS MER