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
Magazine articles
Rheological behavior of magnetic pulp fiber suspensions, TAPPI Journal June 2021
ABSTRACT: This paper is focused on the rheology of magnetic pulp suspensions in absence and presence of an external magnetic field. Magnetic fibers were prepared by the lumen loading method using bleached eucalyptus fibers and cobalt ferrite (CoFe2O4) nanoparticles. The effect of mass consistency, temperature, concentration of magnetic fibers, and magnetic field strength on yield stress and apparent viscosity of the suspensions were investigated. In the absence of an applied field, a dependence of yield stress with consistency, as well as with the percentage of magnetic fibers present in the suspension, was found. In flow tests, all the suspensions exhibited shear-thinning behavior, showing that the viscosity is only affected by the consistency of the suspension. On the other hand, magnetorheological measurements show a negative effect of the applied magnetic field on the viscosity of the suspension.
Journal articles
Magazine articles
New learnings and strategies for meeting future recovery boiler particulate emission limits with existing electrostatic precipitators, TAPPI Journal June 2021
ABSTRACT: It is foreseeable that recovery boiler particulate emission limits in the United States and Canada will continue to get more stringent with time. Because of this, continued improvement of emission control equipment, as well as a better understanding of how operating parameters affect performance, are necessary. Although electrostatic precipitators (ESPs) are often viewed as a mature technology, many improvements in ESP technology continue to be developed. In recent years, academic efforts have improved the understanding of recovery boiler operating conditions on ESP performance. Additionally, advancements in materials, power supplies, and design continue to improve the efficiency and reliability of ESPs.This paper discusses how recovery boiler and electrostatic precipitator (ESP) operating factors affect ESP perfor-mance based on process simulations and practical experience, and how these learnings can be implemented to improve future operation of existing ESPs.
Journal articles
An activity-based cost calculation for a kraft pulp mill, TAPPI JOURNAL September 2012
An activity-based cost calculation for a kraft pulp mill, TAPPI JOURNAL September 2012
Journal articles
Measuremets of sootblower jet strength in kraft recovery boilers â?¢ Part II: Results of the third and fourth field trials, TAPPI JOURNAL September 2012
Measuremets of sootblower jet strength in kraft recovery boilers • Part II: Results of the third and fourth field trials, TAPPI JOURNAL September 2012
Journal articles
Composites from a forest biorefinery byproduct and agrofibers: Lignosulfonate-phenolic type matrices reinforced with sisal fibers, TAPPI JOURNAL September 2012
Composites from a forest biorefinery byproduct and agrofibers: Lignosulfonate-phenolic type matrices reinforced with sisal fibers, TAPPI JOURNAL September 2012
Journal articles
Fate of biosludge nitrogen in black liquor evaporation and combustion, TAPPI JOURNAL September 2012
Fate of biosludge nitrogen in black liquor evaporation and combustion, TAPPI JOURNAL September 2012
Journal articles
Magazine articles
Editorial: Steve Ottone: New coating expert for TJ, TAPPI JO
Editorial: Steve Ottone: New coating expert for TJ, TAPPI JOURNAL April 2013
Journal articles
Barrier properties created by dispersion coating, TAPPI JOURNAL April 2013
Barrier properties created by dispersion coating, TAPPI JOURNAL April 2013
Journal articles
Ozone bleaching of South African Eucalyptus grandis kraft pulps containing high levels of hexenuronic acids, TAPPI JOURNAL August 2013
Ozone bleaching of South African Eucalyptus grandis kraft pulps containing high levels of hexenuronic acids, TAPPI JOURNAL August 2013
Journal articles
Allocation of carbon dioxide emissions from key production steps in high-grade paper mills, TAPPI JOURNAL August 2013
Allocation of carbon dioxide emissions from key production steps in high-grade paper mills, TAPPI JOURNAL August 2013