Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Event Type
Collections
Journal articles
Magazine articles
Capturing the Momentum of Change, Paper360º November/December 2020
Capturing the Momentum of Change, Paper360º November/December 2020
Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360º November/December 2020
TAPPI Journal Summaries, Paper360º November/December 2020
Journal articles
Magazine articles
Investigation of the influencing factors in odor emission from wet-end white water, TAPPI Journal October 2020
ABSTRACT: Emission of malodorous gases, such as volatile organic compounds (VOCs), hydrogen sulfide (H2S), and ammonia (NH3) during pulping and papermaking has caused certain harm to the air environment and human health. This paper investigated the influencing factors of odor emission from wet-end white water during the production of bobbin paper in a papermaking mill using old corrugated containers (OCC) as raw material. The concentration of malodorous gases emitted from wet-end white water was determined with pump-suction gas detectors. The results indicated that low temperature could limit the release of malodorous gases from white water. Specifically, no total volatile organic compounds (TVOC), H2S, and NH3 was detected at a temperature of 15°C. The concentrations of malodorous gases were slightly increased when temperature increased to 25°C. When temperature was 55°C, the released concentrations of TVOC, H2S, and NH3 were 22.3 mg/m3, 5.91 mg/m3, and 2.78 mg/m3, respectively. Therefore, the content of malodorous gases significantly increased with the temperature increase. The stirring of white water accelerated the release of malodorous gases, and the release rate sped up as the stirring speed increased. However, the total amount of malodorous gases released were basically the same as the static state. Furthermore, the higher the concentration of white water, the greater the amount of malodorous gases released. The pH had little influence on the TVOC release, whereas it significantly affected the release of H2S and NH3. With the increase of pH value, the released amount of H2S and NH3 gradually decreased. When pH reached 9.0, the release amount of H2S and NH3 was almost zero, proving that an alkaline condition inhibits the release of H2S and NH3.
Runnability of Paperwebs in High-Speed Coaters, 1995 Coating
Runnability of Paperwebs in High-Speed Coaters, 1995 Coating Conference Proceedings
Determining the Dynamic Water Retention Contribution of Vari
Determining the Dynamic Water Retention Contribution of Various Cobinders and Thickeners, 1995 Coating Conference Proceedings
Investigation into the Role of Water Retention Agents and Th
Investigation into the Role of Water Retention Agents and Their Effect on Splice Wetting Out - A Laboratory Simulation, 1995 Coating Conference Proceedings
Use of Advanced Statistical Experimental Design and Improved
Use of Advanced Statistical Experimental Design and Improved Testing Protocol for Evaluating Different Binder Technologies for the Web Offset Coated..., 1995 Coating Conference Proceedings
Effects of Multiple Process Variables on the Quality of Doub
Effects of Multiple Process Variables on the Quality of Double Coated Fine Paper, 1995 Coating Conference Proceedings
Identification and Elimination of Roughness Patterns in Coat
Identification and Elimination of Roughness Patterns in Coated Products, 1995 Coating Conference Proceedings
Journal articles
Coating Pigment Orientation: A Comparative Analysis of the A
Coating Pigment Orientation: A Comparative Analysis of the Application Mechanisms and Properties of Blade and Roll Coatings, 1995 Coating Conference Proceedings