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Journal articles
Growing a Technologically Advanced Workforce: NPT2, Paper360° November/December 2010
Growing a Technologically Advanced Workforce: NPT2, Paper360º November/December 2010
Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360 May/June 2019
TAPPI Journal Summaries, Paper360 May/June 2019
Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360º September/October 2019
TAPPI Journal Summaries, Paper360º September/October 2019
Journal articles
Magazine articles
Kingsport Celebrates Its Centennial, Paper360º November/Dec
Kingsport Celebrates Its Centennial, Paper360º November/December 2016
Journal articles
Magazine articles
Control of malodorous gases emission from wet-end white water with hydrogen peroxide, TAPPI Journal October 2021
ABSTRACT: White water is highly recycled in the papermaking process so that its quality is easily deteriorated, thus producing lots of malodorous gases that are extremely harmful to human health and the environment. In this paper, the effect of hydrogen peroxide (H2O2) on the control of malodorous gases released from white water was investigated. The results showed that the released amount of total volatile organic compounds (TVOC) decreased gradually with the increase of H2O2 dosage. Specifically, the TVOC emission reached the minimum as the H2O2 dosage was 1.5 mmol/L, and meanwhile, the hydrogen sulfide (H2S) and ammonia (NH3) were almost completely removed. It was also found that pH had little effect on the release of TVOC as H2O2 was added, but it evidently affect-ed the release of H2S and NH3. When the pH value of the white water was changed to 4.0 or 9.0, the emission of TVOC decreased slightly, while both H2S and NH3 were completely removed in both cases. The ferrous ions (Fe2+) and the copper ions (Cu2+) were found to promote the generation of hydroxyl radicals (HOœ) out of H2O2, enhancing its inhibition on the release of malodorous gases from white water. The Fe2+/H2O2 system and Cu2+/H2O2 system exhibited similar efficiency in inhibiting the TVOC releasing, whereas the Cu2+/H2O2 system showed better perfor-mance in removing H2S and NH3.
Journal articles
Magazine articles
The role of hornification in the deterioration mechanism of physical properties of unrefined eucalyptus fibers during paper recycling, TAPPI Journal February 2024
ABSTRACT: Physical properties of cellulosic paper deteriorate significantly during paper recycling, which hinders the sustainable development of the paper industry. This work investigates the property deterioration mechanism and the role of hornification in the recycling process of unrefined eucalyptus fibers. The results showed that during the recycling process, the hornification gradually deepened, the fiber width gradually decreased, and the physical properties of the paper also gradually decreased. After five cycles of reuse, the relative bonding area decreased by 17.6%, while the relative bonding force decreased by 1.8%. Further results indicated that the physical property deterioration of the paper was closely related to the decrease of fiber bonding area. The fiber bonding area decreased linearly with the reduction of re-swollen fiber width during paper recycling. Re-swollen fiber width was closely related to the hornification. Hornification mainly reduces the bonding area of unrefined eucalyptus fiber rather than the bonding force. The work elucidates the role of hornification in the recycling process of unrefined eucalyptus fibers and the deterioration mechanism of paper physical properties, which will be helpful to control the property deterioration of paper and achieve a longer life cycle.
Journal articles
The role of mill engineering in water conservation, Frontline Focus, Volume 7, Issue 2
Frontline Focus, February 2011
Journal articles
What is "Research and Development"?, Frontline Focus, Volume 3, Issue 11
Frontline Focus, November 2007
Journal articles
The Problem of Paper Curl, Frontline Focus, Volume 7, Issue 10
Frontline Focus, November/December 2011
Journal articles
Pipe Systems Under Attack, Frontline Focus, Volume 7, Issue 6
Frontline Focus, June/July 2011
