Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Event Type
Collections
The Effects of Sizing on the Enzymatic De-inking of Copy Printed Wood-free Paper, 2009 TAPPI Engineering, Pulping, Environmental Conference
The Effects of Sizing on the Enzymatic De-inking of Copy Printed Wood-free Paper, 2009 TAPPI Engineering, Pulping, Environmental Conference
Understanding Carbon Footprints in the Forest Products Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
Understanding Carbon Footprints in the Forest Products Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
Climate Change Compliance Considerations for an Integrated Pulp & Paper Facility Utilizing Combined Heat & Power: A Case Study, 2009 TAPPI Engineering, Pulping, Environmental Conference
Climate Change Compliance Considerations for an Integrated Pulp & Paper Facility Utilizing Combined Heat & Power: A Case Study, 2009 TAPPI Engineering, Pulping, Environmental Conference
A Multi-faceted Biorefinery for Pulp Mills, Presentation for New Technology Showcase Engineering, Pulping and Environmental Conference, TAPPI Meeting 09epe10
A Multi-faceted Biorefinery for Pulp Mills, 2009 TAPPI Engineering, Pulping, Environmental Conference
ï¿ŒManagement and Control of the Stickies Spectrum: A new capability 09epe12
Management and Controlof the Stickies Spectrum: A New Capability, 2009 TAPPI Engineering, Pulping, Environmental Conference
EATON SC9000 MV AC DRIVE TECHNOLOGY Improves Weyerhaeuser Energy Efficiency 09epe15
EATON SC9000 MV AC Drive Technology Improves Weyerhaeuser Energy Efficiency, 2009 TAPPI Engineering, Pulping, Environmental Conference
Sources of Variability in Testing Absorptive Rate of Tissue Paper, 2009 TAPPI Engineering, Pulping, Environmental Conference
Sources of Variability in Testing Absorptive Rate of Tissue Paper, 2009 TAPPI Engineering, Pulping, Environmental Conference
UNS S32202 â?¢ A Lean Duplex Grade for the Pulp and Paper Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
UNS S32202 • A Lean Duplex Grade for the Pulp and Paper Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
How Environmental Attributes Can Help Finance Biomass-to-Energy Initiatives in the Pulp & Paper Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
How Environmental Attributes Can Help Finance Biomass-to-Energy Initiatives in the Pulp & Paper Industry, 2009 TAPPI Engineering, Pulping, Environmental Conference
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.