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Showing result 1 - 5 of 79 essays matching the above criteria.

  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. Evaluation of Excess Heat Driven Carbon Capture Integrated at a Swedish Pulp Mill

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Frida Nilsson; [2023]
    Keywords : CCS; BECCS; pulp and paper industry; pulp mill; excess heat; MEA; HPC; AMP; DMSO; chemical engineering; environmental engineering; Technology and Engineering;

    Abstract : As the atmospheric carbon dioxide keeps increasing, bioenergy with carbon capture and storage (BECCS) is getting increased attention as a measure to reduce the emissions of carbon dioxide. It is especially interesting in Sweden where the extensive paper and pulp industry constitutes point sources of biogenic carbon dioxide. READ MORE

  5. 4. Quantitative and qualitative analysis of dyes in pulp from recycled textiles

    University essay from KTH/Fiber- och polymerteknologi

    Author : Anna Bevin; [2023]
    Keywords : Textile fibers; Dyes; Kappa number; FTIR; UV-VIS; Textilfibrer; Färgämnen; Kappatal; FTIR; UV-VIS;

    Abstract : To decrease the environmental footprint, the textile industry needs to become more circular. One company that is trying to close the textile lifecycle loop is the Swedish company Renewcell. In the Renewcell process, discarded clothes and other textile waste are turned into a dissolving pulp that can be used for production of new textiles. READ MORE

  6. 5. Impact of pulp chemical composition and fiber morphology on hygroexpansion and strength properties of kraftliner

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Serdar Unal; [2023]
    Keywords : Chemical Engineering; Hygroexpansion; Pulp; Kraftliner; Tensile strength; Iso-brightness; Chemistry;

    Abstract : Kraftliner is the unbleached pulp used in the outermost layer of corrugated cardboard. Like other types of paper, it is produced from wood chips as a raw material. Kraftliner is known for its high tensile strength, tear resistance, compressive strength, etc., making it suitable for packaging material for heavy objects. READ MORE