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Journal articles
Effects of sulfidity reduction and anthraquinone addition on pollutant emission and quality of Eucalyptus kraft pulp, TAPPI JOURNAL, September 2002, Vol. 1(7) (240 and 137KB)
Effects of sulfidity reduction and anthraquinone addition on pollutant emission and quality of Eucalyptus kraft pulp, TAPPI JOURNAL, September 2002, Vol. 1(7) (240 and 137KB)
Journal articles
A sensor for microstickies, TAPPI JOURNAL, Online Exclusives, April 2003, Vol. 2(4) (174KB)
A sensor for microstickies, TAPPI JOURNAL, Online Exclusives, April 2003, Vol. 2(4) (174KB)
Journal articles
Effect of clay-stickie interaction on centrifugal cleaner efficiency, TAPPI JOURNAL, April 2003, Vol. 2(4) (180KB)
Effect of clay-stickie interaction on centrifugal cleaner efficiency, TAPPI JOURNAL, April 2003, Vol. 2(4) (180KB)
Journal articles
Selective removal of chloride and potassium in kraft pulp mills, TAPPI JOURNAL, April 2003, Vol. 2(4) (141KB)
Selective removal of chloride and potassium in kraft pulp mills, Solutions! & TAPPI JOURNAL, April 2003, Vol. 2(4) (141KB)
Journal articles
Lignin Recovery from Kraft Black Liquor: Preliminary Process
Lignin Recovery from Kraft Black Liquor: Preliminary Process Design, 1990 Pulping Conference Proceedings
Journal articles
Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015
Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015
Journal articles
Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015
Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015
Journal articles
Effects of D0-stage temperature, pH, and kappa factor on chl
Effects of D0-stage temperature, pH, and kappa factor on chlorine dioxide decomposition and D0-(EP)-D1 bleaching performance for eucalypt pulps, TAPPI JOURNAL April 2016
Journal articles
Optimization of energy efficiency and condensate production in evaporation plants for a modern softwood pulp mill, TAPPI Journal April 2026
ABSTRACT: To meet the need to further improve thermal efficiency and environmental performance of kraft pulp mills, new systems and techniques have been developed within the evaporation plant. This paper describes these novel approaches and how they were implemented in a project completed in 2018 for a new evaporator and condensate treatment system supplied by Valmet at the SCA Östrand market pulp mill in Sweden. This project was part of a stepwise upgrade of the complete mill to increase the production capacity of the mill from 430,000 to 900,000 air-dried metric tons/year (ADt/y). As part of this upgrade, the mill had the objectives to increase the energy efficiency of the pulp mill and to minimize the air emissions as much as possible, the effluent volume, and the water usage in the mill. The mill also wanted to have the disposal of the biosludge in the black liquor, and the production of tall oil from black liquor soap, liquid methanol, and turpentine. This required that the new evaporation and condensate treatment system be very closely integrated into the other process departments of the mill, including integration of the hot weak black liquor flash vapor from the digester directly into the evaporator train and the production of multiple streams of clean evaporation plant condensate at the correct temperature for the bleach plant. Heat and mass balance calculation values, which were found to do very well in predicting the effect on actual mill operation, are also presented in this paper.
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.