Essays about: "free chlorine"

Showing result 1 - 5 of 11 essays containing the words free chlorine.

  1. 1. Analysis of Methanol Based Chlorine Dioxide Production : An analysis of sodium chlorate reduction efficiency and investigation of salt cake filter wash on an SVP-LITE® system

    University essay from Karlstads universitet

    Author : Emil Lundh; [2023]
    Keywords : ECF; SVP-LITE®; chlorine dioxide; bleaching; ECF; SVP-LITE®; Klordioxid; blekning;

    Abstract : This work aimed to determine how effective an SVP-LITE® chlorine dioxide plant at Vallviks Bruk was running. This was done by determining the chemical consumption per unit of chlorine dioxide produced. The calculations relied upon online instrumentation that was manually validated. READ MORE

  3. 2. Dioxins: An Easy Problem to Solve or a Hard-Fought Battle for the Environment? a Case Study of How and Why the Pulp and Paper Industry in Sweden Transitioned Away From Chlorine-Bleaching

    University essay from Lunds universitet/Sociologiska institutionen; Lunds universitet/Sociologi

    Author : Marcus Aronsson; [2023]
    Keywords : environmental sociology; ecological modernization; treadmill of production; middle-range; industrial transition; Social Sciences;

    Abstract : The situation for the environment is in many ways dire. However, amidst all the negative environmental developments it is easy to neglect the successes that have actually happened. READ MORE

  4. 3. Multivariable analysis for studies of the origin of residual peroxide

    University essay from KTH/Fiber- och polymerteknologi

    Author : Sara Johansson; [2022]
    Keywords : Hydrogen peroxide; Hydrogen peroxide bleaching; PCA; Tepidiphilus; beneficial bacteria; paper mill; Väteperoxid; väteperoxidblekning; PCA; Tepidiphilus; gynnsamma bakterier; pappersbruk;

    Abstract : På pappersmaskin 11 i Hallsta pappersbruk tillverkas högglansigt papper som bleks med väteperoxid. Om väteperoxiden som finns kvar efter blekningen, kallat restperoxid, kommer ut på pappersmaskinen sliter detta på termovalsarna, vilket påverkar slutprodukten. READ MORE

  5. 4. A Comparative Life Cycle Assessment of Alternative Polymers to Poly(vinyl chloride) for Use in Flooring Applications

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Caroline Almqvist; Pernilla Larsson; [2021]
    Keywords : PVC; Flooring; Life Cycle Assessment; LCA; Polymer technology; Earth and Environmental Sciences; Chemistry; Technology and Engineering;

    Abstract : Poly(vinyl chloride) has a long history of use in the flooring industry. Throughout the years, several environmental and health issues have arisen concerning the production, usage and disposal of PVC. READ MORE

  6. 5. Thermal induced yellowing of peroxide bleached birch pulp

    University essay from Luleå tekniska universitet/Industriell miljö- och processteknik

    Author : Alexander Nygren; [2020]
    Keywords : Accelerated ageing; Bleaching; Brightness reversion; Kraft pulp; pH; Yellowing;

    Abstract : Brightness reversion, also known as yellowing, is a well-known phenomenon which means that the brightness of paper products decreases during ageing. The name of this phenomenon is based on that paper products usually change in color towards yellow during ageing. READ MORE