Search for dissertations about: "calcium carbonate precipitation"

Showing result 1 - 5 of 12 swedish dissertations containing the words calcium carbonate precipitation.

  2. 1. Calcium Carbonate Precipitation in Presence of Carboxylic Acids

    Author : Karl-Johan Westin; KTH; []
    Keywords : calcium carbonate; precipitation; crystallization; carboxylic acids;

    Abstract : With a metal removal process based on precipitation aimed atthe purification of pulping effluent as a starting point, theinfluence of carboxylic acids on calcium carbonateprecipitation has been studied. The chosen carboxylic acids canact as more or less strong complexing agents for aqueouscalcium, just as many compounds found in pulping liquors. READ MORE

  4. 2. On the removal of calcium by carbonate precipitation in sulfate pulp mills

    Author : Karl-Johan Westin; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  5. 3. Experimental, petrological and geochemical investigations of ikaite (CaCO3·6H2O) formation in marine environments

    Author : Elin Tollefsen; Alasdair Skelton; Carl-Magnus Mörth; Erik Sturkell; Andrew Putnis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ikaite; petrology; experiment; geochemistry; marine environments; pseudomorphs; calcium carbonate; Ikka Fjord; glendonite; nepheline; siderite; paleotemperature; carbonatite; Geology; geologi;

    Abstract : Carbonates are a group of minerals that play an essential role in several processes on planet Earth, for example in the global carbon cycle and as a product of biomineralisation. Calcite (CaCO3) is by far the most common mineral in the carbonate group, and the stable form of carbonate at Earth surface conditions. READ MORE

  6. 4. On calcium-related problems in kraft pulping of Eucalyptus dunnii

    Author : Vijaya Lakshmi Vegunta; Olena Sevastyanova; Helena Håkansson; KTH; []
    Keywords : Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Kraft pulping is the most widely used pulping process for producing chemical pulp today. It has been in use for more than 130 years. READ MORE

  7. 5. Characterisation and Consolidation of Historical Lime Mortars in Cultural Heritage Buildings and Associated Structures in East Africa

    Author : Athuman M. K. Ngoma; Jonas Holmgren; Jan Erik Lindqvist; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; East Africa; Stone Town; historical building; mortar; deterioration; consolidation; calcium hydroxide solution; Building engineering; Byggnadsteknik;

    Abstract : For the period of several centuries, the influence of several distinct cultures produced rich and diverse cultural heritage that we see today in East Africa countries. The most tangible remains of these heritages are stone built buildings and structures including, palaces, mosques, residential houses and tombs. READ MORE