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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
The evolution of maintenance management and engineering in the pulp and paper industry over the past fifty years, TAPPI JOURNAL, February 1996, Vol. 79(2)
The evolution of maintenance management and engineering in the pulp and paper industry over the past fifty years, TAPPI JOURNAL, February 1996, Vol. 79(2)
Journal articles
Optimizing reinforcement pulps by fracture toughness, TAPPI JOURNAL, January 1996, Vol. 79(1)
Optimizing reinforcement pulps by fracture toughness, TAPPI JOURNAL, January 1996, Vol. 79(1)
Journal articles
Xylanase- and mannanase-aided ecf and tcf bleaching, TAPPI JOURNAL, July 1996, Vol. 79(7)
Xylanase- and mannanase-aided ecf and tcf bleaching, TAPPI JOURNAL, July 1996, Vol. 79(7)
Journal articles
Biocides-bug killers that enhance pulpmaking and papermaking processes, TAPPI JOURNAL, July 1996, Vol. 79(7)
Biocides-bug killers that enhance pulpmaking and papermaking processes, TAPPI JOURNAL, July 1996, Vol. 79(7)
Journal articles
Combining pilot-scale ozone and activated sludge treatments on newsprint mill effluents, TAPPI JOURNAL, June 1996, Vol. 79(6)
Combining pilot-scale ozone and activated sludge treatments on newsprint mill effluents, TAPPI JOURNAL, June 1996, Vol. 79(6)
Journal articles
Controlling trs emissions from dissolving-tank vent stacks, TAPPI JOURNAL, June 1996, Vol. 79(6)
Controlling trs emissions from dissolving-tank vent stacks, TAPPI JOURNAL, June 1996, Vol. 79(6)
Journal articles
Experience with water system closure at recycled paperboard mills, TAPPI JOURNAL, March 1996, Vol. 79(3)
Experience with water system closure at recycled paperboard mills, TAPPI JOURNAL, March 1996, Vol. 79(3)
Journal articles
Weighting function for the calculation of iso brightness, TAPPI JOURNAL, March 1996, Vol. 79(3)
Weighting function for the calculation of iso brightness, TAPPI JOURNAL, March 1996, Vol. 79(3)
Journal articles
New urethane prepolymer immobilized fungal bioreactor for decolorization and dechlorination of kraft bleach effluents, TAPPI JOURNAL, May 1996, Vol. 79(5)
New urethane prepolymer immobilized fungal bioreactor for decolorization and dechlorination of kraft bleach effluents, TAPPI JOURNAL, May 1996, Vol. 79(5)