Essays about: "Mechanical pulping"

Showing result 1 - 5 of 6 essays containing the words Mechanical pulping.

  1. 1. Mapping and analysing the current waste paper recycling system in Europe for a new fiber-based packaging material

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Hande Seker Cakal; [2023]
    Keywords : Separate waste collection; material recovery; material recycling; extended producer responsibility; fiber-based cushioning packaging; Separat avfallsinsamling; materialåtervinning; utökat producentansvar; fiberbaserad dämpningsförpackning;

    Abstract : Fiber-based packaging has emerged as an alternative to plastic packaging, driven by concerns regarding environmental impact and excessive usage of plastic. In response to market trends favouring circular packaging solutions, Stora Enso is preparing to introduce Papira, an innovative fiber-based cushioning packaging material, in Europe. READ MORE

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

    University essay from Karlstads universitet/Avdelningen för kemiteknik

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

    Abstract : 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. READ MORE

  4. 3. Textile paper as a circular material

    University essay from KTH/Industriell ekologi

    Author : Archana Ashok; [2017]
    Keywords : Circular economy; paper; textile; recycling; fibre; packaging; value chain; life cycle assessment; LCA; techno-economic assessment; TEA; eco-design; circular material; industrial symbiosis;

    Abstract : Increasing resource efficiency by utilising secondary raw material is one of the key characteristics of a circular economy. Textile dust fibre, a waste generated from textile mechanical recycling has the prospect to be utilised as secondary raw material for producing novel material: textile paper suitable for packaging and other applications. READ MORE

  5. 4. Application of enzymes for pre-treatment of wood chips for energy efficient thermomechanical pulping

    University essay from Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Author : Tomas Mårtensson; [2012]
    Keywords : Thermo mechanical pulping TMP ; Energy reduction; Enzyme; Pilot scale refining; Reducing sugar assay;

    Abstract : Thermomechanical pulping (TMP) is a highly energy intensive process where most of the energy is used in therefining of chips to fibres. Various ways of reducing the energy consumption have earlier been studied, for examplechange of refiner pattern, addition of various chemicals, and also some biochemical implementation in the form of fungus and enzymes. READ MORE

  6. 5. High consistency refining of mechanical pulps during varying refining conditions : High consistency refiner conditions effect on pulp quality

    University essay from Institutionen för fysik, kemi och biologi; Institutionen för fysik, kemi och biologi

    Author : Dino Muhic; [2008]
    Keywords : Thermomechanical pulping; high consistency refining; segment wear; housing pressure; feed pressure; mechanical pulping;

    Abstract :   The correlation between pulp properties and operating conditions in high consistency (HC) refiners at Holmen Paper AB were studied. Two types of HC refiners were investigated: the Andritz RTS refiner at the Hallstavik Mill and the Sprout-Bauer Twin 60 refiner at the Braviken Mill. READ MORE