Sökning: "pulp-mill"
Visar resultat 26 - 30 av 72 avhandlingar innehållade ordet pulp-mill.
26. Genetic response to pollution in sticklebacks; natural selection in the wild
Sammanfattning : The last century, humans have been altering almost all natural environments at an accelerating rate, including the Baltic Sea that has highly eutrophicated areas and many coastal industries such as Pulp-mills. For animals living in a habitat that changes there are basically two alternatives, either to cope with the change or become locally extinct. LÄS MER
27. Valuation and hedging of long-term asset-linked contracts
Sammanfattning : The five essays in this dissertation are all concerned with how commodity price uncertainty affects the valuation of real and financial assets. Focusing on the stochastic process approximating the price process of the commodity, a time-inhomogeneous mean reverting process is suggested and used in the valuation of a pulp mill. LÄS MER
28. Extraction of Lignin from Kraft Cooking Liquor by Ultrafiltration
Sammanfattning : Lignin is a potential biofuel which can be extracted from kraft cooking liquor. Lignin can also prove valuable as a speciality chemical. By extracting lignin potential economical revenue can be gained by pulp mills, as well as technical benefits such as easier delignification and bleaching. LÄS MER
29. Benefits of Integrated Upgrading of Biofuels in Biorefineries - Systems Analysis
Sammanfattning : As a result of increasing concerns about climate change, there is considerable current interest in increasing use of CO2-neutral biofuel in the energy system. Increased use of biomass fuel requires that it be upgraded in order to facilitate transportation and distribution to end-users. LÄS MER
30. Towards a pure kraft lignin
Sammanfattning : The most widely used production method for paper pulp in the world is kraft pulping. In chemical pulping the polymer, lignin, which binds the wood fibres together, is partly depolymerized. This allows the wood fibres to be separated from each other. LÄS MER