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Considerations in managing wastewater odor at pulp and paper operations, TAPPI Journal March 2022
ABSTRACT: Many pulp and paper mills are, at least periodically, faced with the release of odors that can migrate offsite and be considered a nuisance by nearby residents. At chemical pulp mills, perceptible odors associated with reduced sulfur compounds (RSCs) are common, many of which are highly perceptible owing to their low odor thresholds. As releases of RSCs and other odorous substances from production processes are progressively controlled, the proportional contribution from wastewater treatment systems to areal odors can increase. This review paper summarizes important fundamentals of odor generation, source identification, and control. Common odorous substances are identified, and mechanisms for their generation are summarized. Approaches for measuring odorous substances are detailed to enable more effective management, and various odor control strategies are discussed.
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Editorial: Industry coating expert Gregg Reed joins TAPPI Journal editorial board, TAPPI Journal Nov
ABSTRACT: TAPPI and the TAPPI JOURNAL (TJ) editorial staff would like to welcome a new member to the TJ editorial board, Gregg Reed, Ph.D., technical support leader at Imerys in Gray, GA. In his current position, Gregg develops new mineral and specialty coating products for paper and packaging applications and manages customer requests, including pilot trials. He also supervises the activities of technicians and chemists in the laboratory.
Journal articles
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Influence of pallet pattern on top-to-bottom compression performance of unitized loads, TAPPI Journal
ABSTRACT: Environmental scaling factors estimate a corrugated container’s ability to withstand various conditions it will encounter during the storage and distribution process. In this project, we examined the compressive resistance of unitized loads using differing pallet stacking patterns. To simulate real-world failure scenarios in our laboratory tests, we used two different nominal board grades of single-wall C-flute regular slotted containers loaded with a plywood panel and bagged salt to direct the failure location to the bottom of the stack. Our results showed that the columnar aligned pattern provided the greatest compressive resistance and the interlocked stacking arrangement yielded the lowest of the patterns evaluated. Based on the study results, we calculated box compression retention multipliers for each pattern and compared them to scaling factors published by the Fibre Box Association.
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Perfluoroalkyl and polyfluoroalkyl substances (PFAS) — Fibrous substrates, TAPPI Journal September 2023
ABSTRACT: Perfluoroalkyl and polyfluoroalkyl substances (PFAS) have been implemented during the finishing process of textiles such as upholstery, clothing, personal protective equipment, and sports gear to provide water resistance. Currently, PFAS are still present at quantifiable levels in consumer products and food, even though many companies have started to phase out PFAS treatment with non-toxic water repellant replacements given the possible detrimental health effects suggested by current research. This paper is a detailed review that focuses on how PFAS are implemented in textile production and sources of PFAS contamination during chemical treatments. This review also addresses current legislation on PFAS emissions and trade regulations to decrease exposure of consumers due to toxicokinetics and mechanisms of action through-out the body that are still not well understood. This paper includes a literature review on possible PFAS related health conditions shown from past research and contains suggested toxicity levels, exposure routes, duration, and pathways detailed to the best of our ability.
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Characterization and evaluation of antioxidation of lignin from bamboo powder using a formic acid-catalyzed ethanol organosolv process, TAPPI JOURNAL January 2019
Characterization and evaluation of antioxidation of lignin from bamboo powder using a formic acid-catalyzed ethanol organosolv process, TAPPI JOURNAL January 2019
Journal articles
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Editorial: TAPPI Journal 2018 Best Research Paper delves deeper into press section rewet to address drying efficiency, TAPPI Journal March 2019
ABSTRACT: TAPPI and the TAPPI Journal (TJ) Editorial Board would like to congratulate the authors of the 2018 TAPPI Journal Best Research Paper Award: J. David “Dave” McDonald and Richard J. “Dick” Kerekes. Their paper, “Rewet in wet pressing of pa-per,” appeared on p. 479 of the September 2018 issue. This research was recognized by the Editorial Board for its in-novation, creativity, scientific merit, and clear expression of ideas.
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Monitoring the free lime content in lime mud using zeta potential, TAPPI JOURANL April 2018
Monitoring the free lime content in lime mud using zeta potential, TAPPI JOURANL April 2018
Journal articles
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Physical handsheet properties of pulp furnishes containing attritor-treated fibers, TAPPI JOURNAL January 2017
Physical handsheet properties of pulp furnishes containing attritor-treated fibers, TAPPI JOURNAL January 2017
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Finite element analysis of the thermal bending of a chilled
Finite element analysis of the thermal bending of a chilled cast thermo roll, TAPPI JOURNAL June 2017
Journal articles
Magazine articles
An effective method for determining the retention and distribution of cellulose nanofibrils in paper handsheets by dye labeling, TAPPI JOURNAL March 2018
An effective method for determining the retention and distribution of cellulose nanofibrils in paper handsheets by dye labeling, TAPPI JOURNAL March 2018