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Journal articles
Magazine articles
Open Access
A new method of studying the fundamental mechanisms involved in pigment liberation from recycle papers, TAPPI Journal October 2022

ABSTRACT: Deinking flotation is the most efficient and widely used method of removing ink particles from printed papers to improve the recyclability. A prerequisite for successful deinking flotation is detachment of pigments from paper fibers, a subprocess known as liberation. The degree of liberation is usually determined via hyperwashing tests, which are costly and time consuming. Furthermore, they provide no information on the fundamental mechanisms controlling liberation. In the present work, we developed a new method in which ?-potentials of the particles in a pulp are measured and analyzed. If pigments are not liberated from paper fibers, a frequency distribution plot gives a single peak, while two peaks appear when they are liberated. One can readily determine the degrees of liberation from the peak positions and peak heights. In addition, the ?-potential data can be used to construct disjoining pressure isotherms using the DLVO theory that are useful to better understand the fundamental mechanisms involved and the roles of different reagents used to improve pigment liberation.

Journal articles
Open Access
Model to Predict the Precipitation of Burkeite in the Multip

Model to Predict the Precipitation of Burkeite in the Multiple Effect Evaporator and Techniques for Controlling Scaling, 1995 Engineering Conference Proceedings

Journal articles
Open Access
Liquor-To-Liquor Differences in Combustion and Gasification

Liquor-To-Liquor Differences in Combustion and Gasification Processes: Nitrogen Oxide Formation Tendency, 1995 Engineering Conference Proceedings

Magazine articles
Open Access
Nonwood fibers mark the road to gold for jow atchison, TAPPI JOURNAL, March 1996, Vol. 79(3)

Nonwood fibers mark the road to gold for jow atchison, TAPPI JOURNAL, March 1996, Vol. 79(3)

Conference papers
Open Access
Feasibility study of sludge lysis and recycle in the activat

Feasibility study of sludge lysis and recycle in the activated-sludge process, TAPPI JOURNAL, May 1996, Vol. 79(5)

Journal articles
Open Access
The fracture behavior of tmp/kraft blends, TAPPI JOURNAL, May 1996, Vol. 79(5)

The fracture behavior of tmp/kraft blends, TAPPI JOURNAL, May 1996, Vol. 79(5)

Journal articles
Open Access
Sampling error in measurement of dirt in pulp and paper, TAPPI JOURNAL, May 1996, Vol. 79(5)

Sampling error in measurement of dirt in pulp and paper, TAPPI JOURNAL, May 1996, Vol. 79(5)

Magazine articles
Open Access
Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)

Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)

Magazine articles
Open Access
Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)

Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)

Journal articles
Open Access
Recovery-boiler leak detection using a waterside chemical-mass-balance method, TAPPI JOURNAL, November 1996, Vol. 79(11)

Recovery-boiler leak detection using a waterside chemical-mass-balance method, TAPPI JOURNAL, November 1996, Vol. 79(11)

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