Sökning: "Washing"

Visar resultat 11 - 15 av 158 avhandlingar innehållade ordet Washing.

1. 11. Material recycling of post-consumer flexible polyethylene packaging waste

   Författare :Ezgi Ceren Boz Noyan; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; degradation; polyethylene; melt-compounding; washing; post-consumer flexible packaging waste; mechanical properties; plastics recycling;

   Sammanfattning : The mechanical and thermal properties of recycled post-consumer flexible polyethylene packaging waste was studied, using material collected and sorted on a large-scale from two sources. Unwashed, laboratory-scale washed, industrial-scale washed, and industrial-scale washed and melt-compounded (industrially recycled) materials were used. LÄS MER

3. 12. Precipitation of Kraft Lignin under Alkaline Conditions

   Författare :Jonas Sundin; KTH; []
   Nyckelord :Alkali lignin; Black liquors; Bleaching; Calcium; Coagulation; Colloids; Kraft pulp; Magnesium; Metals; Mills; Precipitation; Washing;

   Sammanfattning : .... LÄS MER

4. 13. Precipitation and separation of lignin from kraft black liquor

   Författare :Fredrik Öhman; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; precipitation; carbon dioxide; softwood; washing; sulphuric acid; boiling point rise; black liquor; filtration; viscosity; lignin;

   Sammanfattning : .... LÄS MER

5. 14. Continuous Preventive Bridge Maintenance : Effect of High Pressure Washing on Concrete Bridges

   Författare :Louise Andersson; Johan Silfwerbrand; Anders Selander; Ylva Edwards; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bridge maintenance; preventive maintenance; chloride ingress; high-pressure washing; Concrete Structures; Betongbyggnad;

   Sammanfattning : In Sweden, as in many other countries, preventive maintenance of structures andbridges is considered important. It provides several benefits such as prolonged lifespan or service life, less need for repair, and hopefully reduced costs and lowerenvironmental impact.A large part of Sweden’s bridge stock is getting quite old. LÄS MER

7. 15. Pulp displacement washing - An investigation of the influence of fibre and bed properties using a novel measurment technique

   Författare :Jenny Lindau; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; displacement washing; pulp properties.; measurement technique; compression; dispersion; fibre damage; local properties; kraft pulp;

   Sammanfattning : There are many incentives for making the pulp washing process as efficient as possible: an efficient separation of the pulp from the black liquor will increase energy efficiency, reduce costs by minimizing the need for make-up chemicals and improve the bleaching process. Research in this area has, however, been more or less neglected and in the existing literature there are many discrepancies as to how different parameters influence the washing process. LÄS MER