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Editorial: Celebrating an industry giant: Dr. Peter W. Hart, TAPPI Journal April 2024

ABSTRACT: On February 19, 1915, at the annual meeting of the American Paper and Pulp Association held at the Waldorf-Astoria Hotel in New York, a group of 35 people formed a new division called the “Technical Section of the American Paper and Pulp Association” with the objectives to: (1) stimulate interest in the science of pulp and papermaking; (2) provide means for the inter-change of ideas among its members; and (3) encourage original investigation. At that meeting, Professor Ralph H. McKee of the University of Maine (1909-1916) spoke. Professor McKee had initiated the first college course in Pulp and Paper in the United States. In his remarks he stated:

Journal articles
Magazine articles
Characterizing rheological behavior and fluidization of highly refined furnishes, TAPPI Journal April 2024

ABSTRACT: In this work, highly refined softwood bleached kraft pulp (SWBKP) furnishes, referred to here as XFC, were studied from the perspective of fiber suspension handling in processing. The rheology of the furnishes was studied with a rotational rheometer using a non-standard flow geometry to understand the viscosity development at different consistencies and the impact of temperature. For fluidization analysis during pipe flow, two optical methods were implemented; namely, optical coherence tomography (OCT) and high-speed video (HSV) imaging. The OCT was used to determine the small-scale floc structures near the pipe wall where the shear stress is highest, and the HSV imaging was applied for observing flow instabilities and XFC suspension uniformity at the pipe scale. All these issues can be significant in deciding the minimum flow rate required for a process pipe to get sufficient fluidization of XFC suspensions.

Journal articles
Magazine articles
Open Access
Editorial: TAPPI Journal Best Research Paper for 2023 focuses on black liquor concentration using graphene oxide membranes, TAPPI Journal February 2024

ABSTRACT: TAPPI and the TAPPI Journal (TJ) Editorial Board would like congratulate the authors of the 2023 TAPPI Journal Best Research Paper Award and Honghi Tran Prize: Sam Rae, Ella V. Richards, Max Kleiman-Lynch, Brent D. Keller, and Brandon I. Macdonald. Their paper, “Pilot scale black liquor concentration using pressure driven membrane separation,” appeared on p. 223 of the April 2023 issue. This kraft recovery cycle research was recognized by the TAPPI Journal Editorial Board for its innovation, creativity, scientific merit, and clear expression of ideas.