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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
Opening the operating window of impulse drying - part ii: pressure differential as a source of delamination, TAPPI JOURNAL, August 1998, Vol. 81(8)

Opening the operating window of impulse drying - part ii: pressure differential as a source of delamination, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
Biofiltration of a-pinene and its application to the treatment of pulp and paper air emissions, TAPPI JOURNAL, August 1998, Vol. 81(8)

Biofiltration of a-pinene and its application to the treatment of pulp and paper air emissions, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
1997 tappi salary survey, TAPPI JOURNAL, August 1998, Vol. 81(8)

1997 tappi salary survey, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
Speed: its effect on coating equipment and formulations, TAPPI JOURNAL, August 1998, Vol. 81(8)

Speed: its effect on coating equipment and formulations, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
Why to worry about y2k, TAPPI JOURNAL, August 1998, Vol. 81(8)

Why to worry about y2k, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
Using the Internet Effectively, TAPPI JOURNAL, August 1998, Vol. 81(8)

Using the internet effectively, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
The effects of coated magazines on deinking of newsprint after pulping and flotation, TAPPI JOURNAL, December 1998, Vol. 81(12)

The effects of coated magazines on deinking of newsprint after pulping and flotation, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Open Access
Mill steam and power optimization in a real-time pricing environment, TAPPI JOURNAL, December 1998, Vol. 81(12)

Mill steam and power optimization in a real-time pricing environment, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Open Access
New technology for papermaking: biopulping economics, TAPPI JOURNAL, December 1998, Vol. 81(12)

New technology for papermaking: biopulping economics, TAPPI JOURNAL, December 1998, Vol. 81(12)

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