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Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018
Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018
Journal articles
Magazine articles
Contrasting underlying mechanisms of different barrier coating types, TAPPI Journal January 2018
Contrasting underlying mechanisms of different barrier coating types, TAPPI Journal January 2018
Journal articles
Magazine articles
Print quality of flexographic printed paperboard related to coating composition and structure, TAPPI Journal January 2018
Print quality of flexographic printed paperboard related to coating composition and structure, TAPPI Journal January 2018
Journal articles
Magazine articles
A novel unit operation to remove hydrophobic contaminants, TAPPI Journal April 2020
ABSTRACT: For mills making paper with recovered fiber, removal of hydrophobic contaminants is essential for trouble-free operation of paper machines. Significant cost savings on paper machine operation can be achieved by reducing deposits, which results in better quality, reduced downtime, increased fiber yield, and reduced energy consumption. Bubble nucleation separation (BNS) is a relatively new process for removing hydrophobic particles. When vacuum is applied to a slurry, dissolved gas bubbles nucleate on hydrophobic particles and drag them to the surface for easy removal. We constructed a 16-L batch unit to evaluate the effect of operating parameters on removal of hydrophobic particles, using statistical design of experiments. These results were used to guide our design of a 16-L continuous unit. We tested this unit on laboratory and mill samples. The removal of 60%•80% of hydrophobic particles was achieved with a low reject rate of < 2%.Following on this success, we built a 200-L pilot unit and tested it in our pilot plant. With promising results there, we installed the pilot unit at a commercial paper recycling mill. Over the course of several mill trials, we showed that it was possible to remove a considerable amount of suspended solids from paper machine white water with less than 2% rejects. Unfortunately, due to the unit only treating 50 L/min and the mill flow being 12000 L/min, we were not able treat a sufficient portion of the white water to know whether a large-scale implementation of BNS would improve paper machine runnability.
Journal articles
Upgrading OCC and Recycled Liner Pulps by Medium-Consistency Ozone Treatment, TAPPI JOURNAL, February 2007
Upgrading OCC and Recycled Liner Pulps by Medium-Consistency Ozone Treatment, TAPPI JOURNAL, February 2007
Journal articles
Dynamic Modeling of a Paper Machine, Part I: Programming and Software Development, TAPPI JOURNAL, January 2007
Dynamic Modeling of a Paper Machine, Part I: Programming and Software Development, TAPPI JOURNAL, January 2007
Journal articles
Evaluating the Surface Energy of Laboratory-Made Paper Sheets by Contact Angle Measurements, TAPPI JOURNAL, June 2007
Evaluating the Surface Energy of Laboratory-Made Paper Sheets by Contact Angle Measurements, TAPPI JOURNAL, June 2007
Journal articles
Topography and Gloss of Precipitated Calcium Carbonate Coating Layers on a Model Substrate, TAPPI JOURNAL, May 2007
Topography and Gloss of Precipitated Calcium Carbonate Coating Layers on a Model Substrate, TAPPI JOURNAL, May 2007
Journal articles
The influence of thickeners on coating surface structure: pair distribution analysis and correlations to structure and porosity, TAPPI JOURNAL, October 2007
The influence of thickeners on coating surface structure: pair distribution analysis and correlations to structure and porosity, TAPPI JOURNAL, October 2007
Journal articles
Three-Dimensional Observation of Coated Paper by Confocal Laser Scanning Microscope, TAPPI JOURNAL, February 2006, Vol. 5(2) (393 KB)
Three-Dimensional Observation of Coated Paper by Confocal Laser Scanning Microscope, TAPPI JOURNAL, February 2006, Vol. 5(2) (393 KB)