Sökning: "barrved"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet barrved.

  1. 1. Effect of Refining on Softwood Pulp with Addition of Eucalyptus for Greaseproof Paper Production : Vacuum Dewatering in Laboratory Scale

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Anton Nordling; [2023]
    Nyckelord :Refining; beating; eucalyptus; greaseproof paper; degree of refining; vacuum dewatering; formation; air permeance; Malning; Eukalyptus; fettresistent papper; malgrad; vakuumavvattning; formation; luftpermeans;

    Sammanfattning : We are provided countless products from the forest industry and has been through many years. Paper, paper board, packaging materials and furniture to mention a few. A special type of paper used in food packaging for example, is greaseproof paper. LÄS MER

  3. 2. Production, Purification, and Characterization of wood substrates and Galactose oxidase enzyme

    Master-uppsats, KTH/Industriell bioteknologi

    Författare :Rakhesh Pongalikonnar Ranganathan; [2023]
    Nyckelord :Peracetic acid treatment; Galactose oxidase; Pichia pastoris; Biomass recalcitrance; Enzymatic upgrading; Perättiksyrabehandling; Galaktosoxidas; Pichia pastoris; Motsträvighet i biomassa; Enzymatisk uppgradering;

    Sammanfattning : Trä är den bästa förnyelsebara källan för att producera många produkter på grund av dess biokompatibla och biologiskt nedbrytbara natur. Träets biomassa har en motstridig natur mot enzymatisk uppgradering. LÄS MER

  4. 3. Mechanical properties of viscose filament : Made from recycled cotton textile and softwood dissolving pulp

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Sanne Karlsson; [2022]
    Nyckelord :Recycled cotton textile; recycled textile; dissolving pulp; wood dissolving pulp; softwood; viscose dope; viscose filament; the viscose process; spinning process; Återvunnen bomullstextil; återvunnen textil; dissolvingmassa; trädissolvingmassa; barrved; viskos dop; viskosfilament; viskosprocessen; spinningprocess;

    Sammanfattning : The textile industry is one of the largest industries in the world and it causes up to 10 % of the global greenhouse gas emissions. With large environmental issues of cotton- and oil-based textiles, other options are explored such as man-made fibers producing fibers like viscose and lyocell. LÄS MER

  5. 4. Development of pulp fiber charge in oxygen delignification of softwood

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Jiahao Mai; [2021]
    Nyckelord :fiber; fiber charge; fine content; oxygen delignification; softwood; fiber; fiberladdning; finmaterial; syrgasdelignifiering; barrved;

    Sammanfattning : Esteves et.al. 2020 visade att syrgasdelignifiering ökar den totala fiberladdningen men leder inte alltid till ökad pappersstyrka. Denna studie syftar till att undersöka hur fiberladdning påverkar massans egenskaper. LÄS MER

  7. 5. The Influence of pH, Temperature and Number of Wash Steps on the Washing Efficiency of CTMP Pulp

    Master-uppsats, Karlstads universitet/Avdelningen för kemiteknik

    Författare :André Monlars; [2021]
    Nyckelord :Mechanical pulp; Chemi-thermomechanical pulp; Picea abies; Extractives; Wood resin; Deresination; Washing; Mekanisk massa; Kemitermomekanisk massa; Picea abies; Extraktivämnen; Tvättning;

    Sammanfattning : In this report, the washing efficiency of chemi-thermomechanical pulp (CTMP) from Norway spruce (Picea abies) was investigated when adjusting the temperature and pH during washing as well as implementing different number of wash steps. Concurrent effects of having a high pH and temperature were also examined. LÄS MER