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Journal articles
Open Access
Engineers and papermakers bond for better papermaking at TAPPI's first SuperConference, TAPPI JOURNAL, March 1998, Vol. 81(3)

Engineers and papermakers bond for better papermaking at the 1997 superconference, TAPPI JOURNAL, March 1998, Vol. 81(3)

Magazine articles
Open Access
On management: energy and the pulp and paper industry - how will electric utility deregulation affect You?, TAPPI JOURNAL, March 1998, Vol. 81(3)

On management: energy and the pulp and paper industry - how will electric utility deregulation affect You?, TAPPI JOURNAL, March 1998, Vol. 81(3)

Journal articles
Magazine articles
Open Access
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.

Journal articles
Open Access
Factors controlling the passage of fibers through slots, TAPPI JOURNAL, May 1998, Vol. 81(5)

Factors controlling the passage of fibers through slots, TAPPI JOURNAL, May 1998, Vol. 81(5)

Journal articles
Open Access
New technology for papermaking: Commercializing biopulping, TAPPI JOURNAL, November 1998, Vol. 81(11)

New technology for papermaking: commercializing biopulping, TAPPI JOURNAL, November 1998, Vol. 81(11)

Journal articles
Open Access
Paper science and engineering programs - a comparison of the curricula, TAPPI JOURNAL, October 1998, Vol.81(10)

Paper science and engineering programs - a comparison of the curricula, TAPPI JOURNAL, October 1998, Vol.81(10)

Magazine articles
Open Access
English as a first and second language - part 6: avoiding grammar traps, TAPPI JOURNAL, September 1998, Vol. 81(9)

English as a first and second language - part 6: avoiding grammar traps, TAPPI JOURNAL, September 1998, Vol. 81(9)

Journal articles
Open Access
A business-oriented approach to maintenance, TAPPI JOURNAL, September 1998, Vol. 81(9)

On management: a business-oriented approach to maintenance, TAPPI JOURNAL, September 1998, Vol. 81(9)

Journal articles
Open Access
Shop talk: Implementing an effective boilout program, TAPPI JOURNAL, September 1998, Vol. 81(9)

Shop talk: implementing an effective boilout program, TAPPI JOURNAL, September 1998, Vol. 81(9)

Journal articles
Open Access
Energy efficient motor and drive systems: Your path to profit, TAPPI JOURNAL, September 1998, Vol. 81(9)

Energy efficient motor and drive systems: your path to profit, TAPPI JOURNAL, September 1998, Vol. 81(9)

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