Essays about: "pulp fiber"

Showing result 1 - 5 of 63 essays containing the words pulp fiber.

  1. 1. Impact of pre-treatments on the brightness stability of a conventional and near neutral pH ECF-light bleaching sequence

    University essay from KTH/Fiber- och polymerteknologi

    Author : Ali Amirjani; [2023]
    Keywords : ECF; Bleaching; Pulp; AOX; Brightness Stability; ECF; Blekning; Massa; AOX; Ljushetsstabilitet;

    Abstract : Syftet med denna studie är att undersöka inverkan av förbehandlingar på ljushetsstabiliteten av Northern Bleached Softwood Kraft (NBSK) som har blekts enligt (OO) (OP) D/Dn (PO) bleksekvensen. Effekten av förbehandling med xylanas (X), mild sur (A), DTPA (Q) samt ett kombinerad DTPA- & xylanassteg (Q+X) har studerats. READ MORE

  3. 2. Washing efficiency in the pulp mill : An evaluation of the washing efficiency in SCA Munksund's pulp mill

    University essay from KTH/Fiber- och polymerteknologi

    Author : Malin Malmberg; [2023]
    Keywords : Chemical Pulp; Lignin; COD; Pulp Washer; Kraft Pulping; Pappersmassa; Lignin; COD; Massatvätt; Sulfatmassaprocessen;

    Abstract : Munksunds pappersbruk är ett integrerat massa- och pappersbruk som består av två fiberlinjer, en barr- och en lövlinje där båda kokarna är kontinuerliga med efterföljande tvättsteg. En kartering av COD (eng. Chemical Oxygen Demand) och natrium utfördes för båda linjerna för att utvärdera tvätteffektiviteten. READ MORE

  4. 3. Enabling Wet strength agent-reductions through CMC-addition; A case study investigating the possibilities to lower PAE in packaging board with CMC.

    University essay from Karlstads universitet/Avdelningen för kemiteknik

    Author : Sara Christenson; [2023]
    Keywords : ;

    Abstract : In 2015, the United Nations adopted 17 different sustainability development goals. These goals were set for the global community to be guided by – but also to follow thus slowingdown climate change, prevent inequality, end poverty and make sure that by 2030 all people enjoy peace and prosperity. READ MORE

  5. 4. Incorporation of Plasticizers through Refining into Wood Pulp : A Potential Route For Bio-based Thermoplastic Materials

    University essay from KTH/Materialvetenskap

    Author : Victor Eric Pierre Chartrain; [2023]
    Keywords : Cellulose; Paper; Plasticizer; Mechanical Refining; Cellulosa; Papper; Mjukgörare; mekanisk bearbetning;

    Abstract : Fibers are interesting materials alternative to replace conventional fossil-based plastics, as they are bio-based and do not lead to CO2 emissions. Due to their limited ductility, it is difficult to use them to make complex three-dimensional shapes. READ MORE

  6. 5. Tomography-based Micromechanical Analysis of Novel Composite Material

    University essay from KTH/Hållfasthetslära

    Author : Mattias Grankvist; [2023]
    Keywords : paper mechanics; micro mechanics; numerical analysis; tomography; foam forming; density profile; pappersmekanik; mikromekanik; numerisk analys; tomografi; skumformning; densitetsprofil;

    Abstract : This study explores the performance of porous Paptic paper materials composed of a mixture of softwood and lyocell fibers. The investigation involves laboratory experiments and numerical simulations to analyse the impact of various parameters on the paper's characteristics. READ MORE