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Journal articles
Open Access
E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)

E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)

Journal articles
Open Access
Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)

Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)

Journal articles
Open Access
Reduction of pulp fiber accumulation in the header of uf modules, TAPPI JOURNAL, May 2000, Vol. 83(5)

Reduction of pulp fiber accumulation in the header of uf modules, TAPPI JOURNAL, May 2000, Vol. 83(5)

Journal articles
Open Access
The use of ozone as a biocide in paper machine recycled white water, TAPPI JOURNAL, May 2000, Vol. 83(5)

The use of ozone as a biocide in paper machine recycled white water, TAPPI JOURNAL, May 2000, Vol. 83(5)

Journal articles
Open Access
Wood and paper properties of short rotation poplar clones, TAPPI JOURNAL, May 2000, Vol. 83(5)

Wood and paper properties of short rotation poplar clones, TAPPI JOURNAL, May 2000, Vol. 83(5)

Journal articles
Open Access
Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)

Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
High temperature chlorine dioxide bleaching of hardwood kraft pulp, TAPPI JOURNAL, August 2000, Vol. 83(8)

High temperature chlorine dioxide bleaching of hardwood kraft pulp, TAPPI JOURNAL, August 2000, Vol. 83(8)

Journal articles
Magazine articles
Open Access
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.

Journal articles
Magazine articles
Open Access
Evaluation of rice straw for purification of lovastatin, TAPPI Journal November 2021

ABSTRACT: Cholesterol synthesis in the human body can be catalyzed by the coenzyme HMG-CoA reductase, and lovastatin, a key enzyme inhibitor, can reduce hypercholesterolemia. Lovastatin can be obtained as a secondary metabolite of Aspergillus terreus ATCC 20542. In this study, rice straw of lignocellulose was used in aeration and agitation bath fermentation in a 1-L flask, and a maximal crude extraction rate of 473 mg/L lovastatin was obtained. The crude extract was treated with silica gel (230–400 mesh) column chromatography. Ethyl acetate/ethanol (95%) was used as the mobile phase, and isolation was performed through elution with various ethyl acetate/ethanol ratios. The highest production rate of 153 mg/L was achieved with ethyl acetate/ethanol in a ratio of 8:2. The lovastatin gained from the crude extract was added to 12 fractions treated with 0.001 N alkali, and acetone was then added. After 24 h of recrystallization at 4°C, the extract underwent high-performance liquid chromatography. The purity had increased from 25% to 84.6%, and the recovery rate was 65.2%.

Journal articles
Magazine articles
Open Access
Application of spruce wood flour as a cellulosic-based wood additive for recycled paper applications— A pilot paper machine study, TAPPI Journal October 2021

ABSTRACT: This study gives a first insight into the use of wood flour as a plant-based and cellulosic-based alter-native additive for newsprint and paperboard production using 100% recycled fibers as a raw material. The study compares four varieties of a spruce wood flour product serving as cellulosic-based additives at addition rates of 2%, 4%, and 6% during operation of a 12-in. laboratory pilot paper machine. Strength properties of the produced news-print and linerboard products were analyzed. Results suggested that spruce wood flour as a cellulosic-based additive represents a promising approach for improving physical properties of paper and linerboard products made from 100% recycled fiber content. This study shows that wood flour pretreated with a plant-based polysaccharide and untreated spruce wood flour product with a particle size range of 20 μm to 40 μm and 40 μm to 70 μm can increase the bulk and tensile properties in newsprint and linerboard applications.

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