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Journal articles
Magazine articles
Open Access
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
Open Access
Biobleaching of softwood kraft pulp with white-rot fungus izu-154, TAPPI JOURNAL, January 1993, Vol. 76(1)

Biobleaching of softwood kraft pulp with white-rot fungus izu-154, TAPPI JOURNAL, January 1993, Vol. 76(1)

Journal articles
Open Access
Formation of acidic sulfates in kraft recovery boilers, TAPPI JOURNAL, July 1993, Vol. 76(7)

Formation of acidic sulfates in kraft recovery boilers, TAPPI JOURNAL, July 1993, Vol. 76(7)

Journal articles
Open Access
Prediction of hogged-fuel drying times, TAPPI JOURNAL, June 1993, Vol. 76(6)

Prediction of hogged-fuel drying times, TAPPI JOURNAL, June 1993, Vol. 76(6)

Journal articles
Open Access
Print mottle effect of binder migration and latex film formation during coating consolidation, TAPPI JOURNAL, May 1993, Vol. 76(5)

Print mottle effect of binder migration and latex film formation during coating consolidation, TAPPI JOURNAL, May 1993, Vol. 76(5)

Journal articles
Open Access
An overview of strategies for reducing the environmental impact of bleach-plant effluents, TAPPI JOURNAL, May 1993, Vol. 76(5)

An overview of strategies for reducing the environmental impact of bleach-plant effluents, TAPPI JOURNAL, May 1993, Vol. 76(5)

Journal articles
Open Access
Effect of papermaking and coating variables on offset-print quality - part 1: papermaking variables, TAPPI JOURNAL, October 1993, Vol. 76(10)

Effect of papermaking and coating variables on offset-print quality - part 1: papermaking variables, TAPPI JOURNAL, October 1993, Vol. 76(10)

Journal articles
Open Access
Ozone, generated at the corona treater, as an adhesion promoter in extrusion coating, TAPPI JOURNAL, December 1994, Vol. 77(12)

Ozone, generated at the corona treater, as an adhesion promoter in extrusion coating, TAPPI JOURNAL, December 1994, Vol. 77(12)

Magazine articles
Open Access
1994 polymers, laminations and coatings conference highlights technology basics, TAPPI JOURNAL, December 1994, Vol. 77(12)

1994 polymers, laminations and coatings conference highlights technology basics, TAPPI JOURNAL, December 1994, Vol. 77(12)

Journal articles
Open Access
Superheated steam drying of paper from chemithermomechanical pulp, TAPPI JOURNAL, February 1994, Vol. 77(2)

Superheated steam drying of paper from chemithermomechanical pulp, TAPPI JOURNAL, February 1994, Vol. 77(2)

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