Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Collections
Journal articles
Conversion of a recovery boiler to bark burning, TAPPI JOURNAL March 1988
Conversion of a recovery boiler to bark burning, TAPPI JOURNAL March 1988
Journal articles
Rapid caustic extraction of chlorinated pulp, TAPPI JOURNAL March 1988
Rapid caustic extraction of chlorinated pulp, TAPPI JOURNAL March 1988
Journal articles
Computer-assisted ultrasonic detection and measurement of cracks in pressure vessels, TAPPI JOURNAL March 1988
Computer-assisted ultrasonic detection and measurement of cracks in pressure vessels, TAPPI JOURNAL March 1988
Journal articles
Corrosion fatigue testing of suction roll alloys, TAPPI JOURNAL March 1988
Corrosion fatigue testing of suction roll alloys, TAPPI JOURNAL March 1988
Journal articles
The design of aboveground fiberglass-reinforced piping systems, TAPPI JOURNAL March 1988
The design of aboveground fiberglass-reinforced piping systems, TAPPI JOURNAL March 1988
Journal articles
Upgrading the combustion system of a 1956-vintage recovery steam generator, TAPPI JOURNAL March 1988
Upgrading the combustion system of a 1956-vintage recovery steam generator, TAPPI JOURNAL March 1988
Journal articles
Automated control of washer shower water at ITT Rayonier, TAPPI JOURNAL March 1988
Automated control of washer shower water at ITT Rayonier, TAPPI JOURNAL March 1988
Journal articles
Improving TMP pulp properites by sulfonation: optimization of sulfonation process alternatives, TAPPI JOURNAL October 1988 88OCT123
Improving TMP pulp properites by sulfonation: optimization of sulfonation process alternatives, TAPPI JOURNAL October 1988
Journal articles
Magazine articles
Improving refining efficiency with deflocculation, TAPPI Journal May 2022
ABSTRACT: The ability to load a refiner requires the formation of a fiber mat between opposing refiner bars. One of the consequences of this is the formation of flocs that persist through the refiner grooves and exit the refiner. These flocs interfere with sheet strength, requiring additional energy to make up the strength deficit. In addition, flocs can initiate string formation, resulting in machine efficiency issues such as cross-machine profile deterioration and the downtime required to correct it. Novel refiner plate modifications have been shown to improve refining efficiency in otherwise identical refiner plates. Energy savings are typically around 15% of gross refining energy on the basis of the treated stock, although much higher reductions have also been seen. Addressing this previously underappreciated flaw in conventional refining enables greenhouse gas reduction and other benefits related to sheet strength and machine efficiency.
Journal articles
Magazine articles
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.