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Journal articles
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Open Access
The solubility of calcium carbonate in green liquor handling systems, TAPPI Journal October 2019

ABSTRACT: The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

Journal articles
Open Access
Starch-Fatty Complexd Modified Filler for Papermaking

Starch-Fatty Complexd Modified Filler for Papermaking

Journal articles
Open Access
The Effectiveness of TAED on the Peroxide Bleaching

The Effectiveness of TAED on the Peroxide Bleaching of Mechanical, Chemical, and Recycled Pulp

Journal articles
Open Access
Chemistry of Wheat-and Rice-Straw Based CTMP Black Liquor, TAPPI JOURNAL, April 2007

Chemistry of Wheat-and Rice-Straw Based CTMP Black Liquor, TAPPI JOURNAL, April 2007

Journal articles
Open Access
Examination of Cracked Primary Air Ports Fabricated From Modified Alloy 825-Based Composite Tubes, TAPPI JOURNAL, April 2007

Examination of Cracked Primary Air Ports Fabricated From Modified Alloy 825-Based Composite Tubes, TAPPI JOURNAL, April 2007

Journal articles
Open Access
Spectroscopic imaging ellipsometry of wood fiber cell walls: a comparison with confocal microscopy, TAPPI JOURNAL, August 2007

Spectroscopic imaging ellipsometry of wood fiber cell walls: a comparison with confocal microscopy, TAPPI JOURNAL, August 2007

Journal articles
Open Access
Impact of TMP refining line interruptions and reject refiner operations on pulp and paper variability, TAPPI JOURNAL December 2007

Impact of TMP refining line interruptions and reject refiner operations on pulp and paper variability, TAPPI JOURNAL December 2007

Journal articles
Open Access
Power consumption distribution in a TMP refiner: Comparison of the first and second stages, TAPPI JOURNAL, September 2007

Power consumption distribution in a TMP refiner: Comparison of the first and second stages, TAPPI JOURNAL, September 2007

Journal articles
Open Access
Application of lipase to reduce ONP flotation rejects: Part 2. Reduction of flotation rejects, TAPPI JOURNAL, August 2008

Application of lipase to reduce ONP flotation rejects: Part 2. Reduction of flotation rejects, TAPPI JOURNAL, August 2008

Journal articles
Open Access
Influence of pulp refining on tissue paper properties, TAPPI JOURNAL August 2008

Influence of pulp refining on tissue paper properties, TAPPI JOURNAL August 2008

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