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Journal articles
Open Access
Nonwood fiber: Number 2, and trying harder-An interview with Dr. Joseph E. Atchison, TAPPI JOURNAL August 1988

Nonwood fiber: Number 2, and trying harder-An interview with Dr. Joseph E. Atchison, TAPPI JOURNAL August 1988

Journal articles
Open Access
A wet-laid process for the preparation of random fiber-reinforced composites, TAPPI JOURNAL August 1988

A wet-laid process for the preparation of random fiber-reinforced composites, TAPPI JOURNAL August 1988

Journal articles
Open Access
A fast-track approach through the design and permit phases for an ash landfill, TAPPI JOURNAL August 1988

A fast-track approach through the design and permit phases for an ash landfill, TAPPI JOURNAL August 1988

Journal articles
Open Access
Significance of PM10 regulations for the forest products industry, TAPPI JOURNAL August 1988

Significance of PM10 regulations for the forst products industry, TAPPI JOURNAL August 1988

Journal articles
Open Access
The effect of condebelt drying on the structure of fiber bonds, TAPPI JOURNAL, April 1993, Vol. 76(4)

The effect of condebelt drying on the structure of fiber bonds, TAPPI JOURNAL, April 1993, Vol. 76(4)

Journal articles
Open Access
Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

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
Consequences of lignin precipitation in the pulp and paper industry, TAPPI JOURNAL, January 2006, Vol. 5(1) (236 KB)

Consequences of lignin precipitation in the pulp and paper industry, TAPPI JOURNAL, January 2006, Vol. 5(1) (236 KB)

Journal articles
Open Access
Visualization of Liquid-Vapor Phase Change Phenomena in Impu

Visualization of Liquid-Vapor Phase Change Phenomena in Impulse Technology, TAPPI JOURNAL, June 2006, Vol. 5(6) (767 KB)

Journal articles
Open Access
Development of Predictive Oxygen Delignification Models Usin

Development of Predictive Oxygen Delignification Models Using Kinetic Expressions and Neural Networks, TAPPI JOURNAL, May 2006, Vol. 5(5) (151 KB)

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