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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
Preparation of specialized paper, Solutions! & TAPPI JOURNAL, April 2004 (349KB)
Preparation of specialized paper, Solutions! & TAPPI JOURNAL, April 2004 (349KB)
Journal articles
Pulp properties and effluent characteristics from the Mg(OH)2 - based peroxide bleaching process,TAPPI JOURNAL & Solutions! December 2004
Pulp properties and effluent characteristics from the Mg(OH)2 - based peroxide bleaching process,TAPPI JOURNAL & Solutions! December 2004
Journal articles
2004 Performance Survey of the North American Paper Industry, TAPPI JOURNAL, Online Exclusives, December 2004. Vol 3(12), (723KB)
2004 Performance Survey of the North American Paper Industry, TAPPI JOURNAL, Online Exclusives, December 2004. Vol 3(12), (723KB)
Journal articles
Reducing shives level in nonwood chemithermomechanical pulp, TAPPI JOURNAL, August 2005, Vol. 4(8) (200 KB)
Reducing shives level in nonwood chemithermomechanical pulp, TAPPI JOURNAL, August 2005, Vol. 4(8) (200 KB)
Journal articles
Laboratory- and mill-scale study of surfactant spray flotation deinking, TAPPI JOURNAL, October 2005, Vol. 4(10) (216 KB)
Laboratory- and mill-scale study of surfactant spray flotation deinking, TAPPI JOURNAL, October 2005, Vol. 4(10) (216 KB)
Journal articles
Metals buildup in TCF bleach plant closure: laboratory simulation, SOLUTIONS! & TAPPI JOURNAL, May 2002 (208KB)
Metals buildup in TCF bleach plant closure: laboratory simulation, SOLUTIONS! & TAPPI JOURNAL, May 2002 (208KB)
Journal articles
Data for better maintenance plans and investments policy, Solutions! & TAPPI JOURNAL, August 2003, Vol. 2(8) (354KB)
Data for better maintenance plans and investments policy, Solutions! & TAPPI JOURNAL, August 2003, Vol. 2(8) (354KB)
Journal articles
Energy reduction at a kraft mill: examining the effects of process integration, benchmarking, and water reduction, TAPPI JOURNAL & Solutions! March 2005, Vol. 4(3)
Energy reduction at a kraft mill: examining the effects of process integration, benchmarking, and water reduction, TAPPI JOURNAL & Solutions! March 2005, Vol. 4(3)
Journal articles
Effects of pulverized coal fly-ash addition as a wet-end filler in papermaking, TAPPI JOURNAL September 2008
Effects of pulverized coal fly-ash addition as a wet-end filler in papermaking, TAPPI JOURNAL September 2008