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Journal articles
Hexenuronic acid contents of eucalyptus globulus kraft pulps: variation with pulping conditions and effect on ecf bleachability, Solutions! & TAPPI JOURNAL, May 2003, Vol. 2(5) (188KB)
Hexenuronic acid contents of eucalyptus globulus kraft pulps: variation with pulping conditions and effect on ecf bleachability, Solutions! & TAPPI JOURNAL, May 2003, Vol. 2(5) (188KB)
Journal articles
Analysis of laboratory beating by fiber settling time frequency distributions, TAPPI JOURNAL, November 2003, Vol. 2(11) (105KB)
Analysis of laboratory beating by fiber settling time frequency distributions, Solutions! & TAPPI JOURNAL, November 2003, Vol. 2(11) (105KB)
Journal articles
Current status of the pure oxygen activated sludge process in Canadian mills, TAPPI JOURNAL, November 2003, Vol. 2(11) (124KB)
Current status of the pure oxygen activated sludge process in Canadian mills, Solutions! & TAPPI JOURNAL, November 2003, Vol. 2(11) (124KB)
Journal articles
Detailed characterization of poor settling green liquor dregs, TAPPI JOURNAL September 2013
Detailed characterization of poor settling green liquor dregs, TAPPI JOURNAL September 2013
Journal articles
A theoretical analysis of recirculation in pulp refiners, TAPPI JOURNAL April 2014
A theoretical analysis of recirculation in pulp refiners, TAPPI JOURNAL April 2014
Journal articles
Editorial: Peer-Reviewed Engineering highlights from PEERS 2013, TAPPI JOURNAL August 2014
Editorial: Peer-Reviewed Engineering highlights from PEERS 2013, TAPPI JOURNAL August 2014
Journal articles
Brownstock washing A review of the literature, TAPPI JOURNAL January 2014
Brownstock washing A review of the literature, TAPPI JOURNAL January 2014
Journal articles
Multiple faults detection and isolation approach applied to a kraft recovery boiler, TAPPI JOURNAL January 2014
Multiple faults detection and isolation approach applied to a kraft recovery boiler, TAPPI JOURNAL January 2014
Journal articles
Inter-laboratory comparisons of hexenuronic acid measurements in kraft eucalyptus pulps using a UV-Vis spectroscopic method, TAPPI JOURNAL January 2014
Inter-laboratory comparisons of hexenuronic acid measurements in kraft eucalyptus pulps using a UV-Vis spectroscopic method, TAPPI JOURNAL January 2014
Journal articles
Magazine articles
Critical parameters for tall oil separation I: The importance of ration of fatty acids to rosin acids, TAPPI Journal September 2019
ABSTRACT: Tall oil is a valuable byproduct in chemical pulping of wood, and its fractions have a large spectrum of applications as chemical precursors, detergents, and fuel. High recovery of tall oil is important for the economic and environmental profile of chemical pulp mills. The purpose of this study was to investigate critical parameters of tall oil separation from black liquor. To investigate this in a controlled way, we developed a model test system using a “synthetic” black liquor (active cooking chemicals OH- and HS- ions), a complete process for soap skimming, and determination of recovered tall oil based on solvent extraction and colorimetric analysis, with good reproducibility. We used the developed system to study the effect of the ratio of fatty acids to rosin acids on tall oil separation. When high amounts of rosin acids were present, tall oil recovery was low, while high content of fatty acids above 60% significantly promoted tall oil separation. Therefore, manipulating the content of fatty acids in black liquor before the soap skimming step can significantly affect the tall oil solubility, and hence its separation. The findings open up chemical ways to improve the tall oil yield.