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Journal articles
Monitoring the pH and conductivity of dielectric pulps using the ISO and IEC Standard Guidelines, TAPPI JOURNAL, March 2003, Vol. 2(3) (87KB)
Monitoring the pH and conductivity of dielectric pulps using the ISO and IEC Standard Guidelines, TAPPI JOURNAL, March 2003, Vol. 2(3) (87KB)
Journal articles
Factors contributing to calcium oxalate scale at the Simpson Tacoma Kraft mill, TAPPI JOURNAL, February 2003, Vol. 2(2) (247KB)
Factors contributing to calcium oxalate scale at the Simpson Tacoma Kraft mill, Solutions! & TAPPI JOURNAL, February 2003, Vol. 2(2) (247KB)
Journal articles
Comprehensive model of alkaliâ??salt deposition in recovery boilers, TAPPI JOURNAL, February 2003, Vol. 2(2) (421KB)
Comprehensive model of alkali–salt deposition in recovery boilers, Solutions! & TAPPI JOURNAL, February 2003, Vol. 2(2) (421KB)
Journal articles
Effect of pulp refining on thixotropy of cellulose fiber suspensions, TAPPI Journal September 2025
ABSTRACT: This paper presents results on the thixotropic behavior of low-consistency bleached eucalyptus fiber suspensions that had been mechanically treated. The pulps were refined in a PFI mill at different numbers of revolutions (0, 3000, and 6000) to study the effect of refining intensity on the viscosity time-response of fiber suspensions. In steady rheological tests, all the suspensions exhibited shear thinning behavior and no significant differences were observed after mechanical treatment. Stepwise experiments showed that viscosity continuously increased with time when shear rate was suddenly reduced. Additionally, a delay in time evolution of viscosity was observed as the pulp was more refined. A stretched exponential model was fitted to the experimental results of viscosity.
Journal articles
Gap mechanics in pulp refiners, TAPPI Journal June 2025
ABSTRACT: Studies of pulp refining have shown that a single bar impact on pulp has only a 1%•5% probability of producing a successful refining effect. This study has explored the reason why. An analysis of refining kinetics suggested that small segments of a fiber length, about a fiber diameter in size, are treated during each impact. Measurements of localized swelling along fiber lengths caused by refining supported this finding. Based on these findings, it was postulated that force transmittal through fiber networks occurred primarily at fiber crossings. The small size of fiber diameters relative to fiber lengths accounts for the low probability of a successful refining event at each impact. This probability, and the probability of fibers being captured and impacted during passage through a refiner, account for the need for multiple bar crossings to refine pulps.
Journal articles
Toward environmental resilience in pulp and paper manufacturing: Water consumption and carbon dioxide emission reductions, TAPPI Journal September 2025
ABSTRACT: Pulp and paper manufacturing is a water- and energy-intensive industrial sector, necessitating improvement of its operational efficiency, as well as reduction of emissions to the maximum extent possible. This review focuses on the reduction of water consumption and carbon dioxide (CO2) emissions that originate in the pulp and paper industry (PPI). First, process simulation and optimization techniques used for water consumption reduction are reviewed. Then, techno-economic analyses of solvent-based CO2 capture from PPI are discussed. Additionally, key actions are proposed for enhancing water consumption reduction and CO2 capture in PPI.
Journal articles
Use of computational fluid dynamics to investigate natural and mechanically induced flows in an aerated lagoon, TAPPI JOURNAL, April 2003, Vol. 2(4) (364KB)
Use of computational fluid dynamics to investigate natural and mechanically induced flows in an aerated lagoon, Solutions! & TAPPI JOURNAL, April 2003, Vol. 2(4) (364KB)
Journal articles
Behavior of certain components in the vacuum drum washer after the first D stage in ECF bleaching, TAPPI JOURNAL, September 2003, Vol. 2(9) (172KB)
Behavior of certain components in the vacuum drum washer after the first D stage in ECF bleaching, Solutions! & TAPPI JOURNAL, September 2003, Vol. 2(9) (172KB)
Journal articles
Reduction of manganese in brownstockâ??laboratory study and mill trial results, TAPPI JOURNAL, August 2003, Vol. 2(8) (145KB)
Reduction of manganese in brownstock—laboratory study and mill trial results, Solutions! & TAPPI JOURNAL, August 2003, Vol. 2(8) (145KB)
Journal articles
Pulp yield loss in alkaline peroxide bleaching of aspen CTMP Part 1: Estimation and impacts, TAPPI JOURNAL, September 2003, Vol. 2(9) (145KB)
Pulp yield loss in alkaline peroxide bleaching of aspen CTMP Part 1: Estimation and impacts, Solutions! & TAPPI JOURNAL, September 2003, Vol. 2(9) (145KB)