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Conference papers
Peracetate Singlet Oxygen Chemistry as a Safe, Simple and Effective Alternative for Peracetic Acid, 19PEERS
Peracetate Singlet Oxygen Chemistry as a Safe, Simple and Effective Alternative for Peracetic Acid, 19PEERS
Conference papers
How Does Black Liquor Corrosivity Change with decreasing REA, 19PEERS
How Does Black Liquor Corrosivity Change with decreasing REA, 19PEERS
Conference papers
Cast high Nickel containing austenitic alloys for paper and pulp industry, 19PEERS
Cast high Nickel containing austenitic alloys for paper and pulp industry, 19PEERS
Conference papers
Development of Kraft Recovery Boilers • What have been the Main Development Steps?, 19PEERS
Development of Kraft Recovery Boilers • What have been the Main Development Steps?, 19PEERS
Journal articles
Magazine articles
Editorial: A preview of PEERS 2019, TAPPI Journal September 2019
ABSTRACT: Coming soon is PEERS • TAPPI’s annual Pulping, Engineering, Environmental, Recycling and Sustainability gathering for industry professionals. Held this October 27-30 in St. Louis, MO, the conference is co-located with the International Bioenergy & Bioproducts Conference (IBBC) and the 12th Research Forum on Recycling. Universities and research organizations from around the world are represented in the conference content, and below is a sampling of just a few of the many presentations that might interest TAPPI Journal readers.
Journal articles
Magazine articles
Critical parameters for tall oil separation I: The importance of ration of fatty acids to rosin acids, TAPPI Journal September 2019
ABSTRACT: Tall oil is a valuable byproduct in chemical pulping of wood, and its fractions have a large spectrum of applications as chemical precursors, detergents, and fuel. High recovery of tall oil is important for the economic and environmental profile of chemical pulp mills. The purpose of this study was to investigate critical parameters of tall oil separation from black liquor. To investigate this in a controlled way, we developed a model test system using a “synthetic” black liquor (active cooking chemicals OH- and HS- ions), a complete process for soap skimming, and determination of recovered tall oil based on solvent extraction and colorimetric analysis, with good reproducibility. We used the developed system to study the effect of the ratio of fatty acids to rosin acids on tall oil separation. When high amounts of rosin acids were present, tall oil recovery was low, while high content of fatty acids above 60% significantly promoted tall oil separation. Therefore, manipulating the content of fatty acids in black liquor before the soap skimming step can significantly affect the tall oil solubility, and hence its separation. The findings open up chemical ways to improve the tall oil yield.
Journal articles
Magazine articles
A new technique for the measurement of show-through mottle of fine paper, TAPPI Journal September 2019
ABSTRACT: Mottling within print-through and show-through is caused by the variability of the local optical properties of the sheet. This mottling is visually disturbing and a mark of poor paper quality. The ability to predict print-through mottle of printed paper by measuring show-through mottle on the unprinted sheet would be a valuable asset for paper machine control.We examined the relationship between print-through mottle and show-through mottle. We worked with nine samples of 60 lb. uncoated fine paper (90 g/m2), from various North American paper companies, that were printed on an offset press, 400K (400% Black), on both sides. A show-through mottle instrumental determination technique was developed using an existing Fast Fourier Transform-based algorithm. The nine samples examined were ranked similarly by the visual evaluation of print-through mottle and by the instrumental determination of show-through mottle. We thus established that show-through on the unprinted sheet can be used as a reliable predictor of print-through, therefore saving time and money for papermakers. We also found a significant two-sidedness in show-through for some of the samples.
Conference papers
Surface Mapping Of Fibers As A Screening Mechanism For Fiber Modifying Enzymes, 19TissueCon
Surface Mapping Of Fibers As A Screening Mechanism For Fiber Modifying Enzymes, 19TissueCon
Conference papers
Safety Aspects and Practical Constraints in the Combustion o
Safety Aspects and Practical Constraints in the Combustion of Odorous Gases in Black Liquor Recovery Boilers, 2015 PEERS Conference
Conference papers
Technical / Economic Analysis of Bamboo Fiber in Pulp and Pa
Technical / Economic Analysis of Bamboo Fiber in Pulp and Paper Manufacture - Part I. Economics of growing bamboo in a plantation for biomass production, 2015 PEERS Conference