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Psychophysical tests for visual-numerical correlation of whi

Psychophysical tests for visual-numerical correlation of whiteness formulas, TAPPI JOURNAL May 2016

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Open Access
Editorial: A preview of PEERS 2019, TAPPI Journal September 2019

ABSTRACT: Coming soon is PEERS • TAPPI’s annual Pulping, Engineering, Environmental, Recycling and Sustainability gathering for industry professionals. Held this October 27-30 in St. Louis, MO, the conference is co-located with the International Bioenergy & Bioproducts Conference (IBBC) and the 12th Research Forum on Recycling. Universities and research organizations from around the world are represented in the conference content, and below is a sampling of just a few of the many presentations that might interest TAPPI Journal readers.

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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.

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Open Access
New automated method for macrocontaminant analysis

New automated method for macrocontaminant analysis: Industrial applications, TAPPI JOURNAL November 2017

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Innovative technology for making paper from poor fibers

Innovative technology for making improved paper from the poorest fibers, TAPPI JOURNAL November 2017

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Open Access
Improved deinking and stickies removal

Improved deinking and stickies removal, TAPPI JOURNAL November 2017

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Open Access
Effect of conductivity on paper and board machine performanc

Effect of conductivity on paper and board machine performance— a review and new experiences, TAPPI JOURNAL October 2017

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Open Access
Techno-economic analysis of ECF bleaching and TCF bleaching

Techno-economic analysis of ECF bleaching and TCF bleaching for a bleached eucalyptus kraft pulp mill, TAPPI JOURNAL October 2017

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Oil absorption and desorption by polypropylene fibers, TAPPI

Oil absorption and desorption by polypropylene fibers, TAPPI JOURNAL September 2017

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Three-dimensional pore structure visualization and character

Three-dimensional pore structure visualization and characterization of paper using X-ray computed tomography, TAPPI JOURNAL September 2017

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