On the Determination of Odor Thresholds in Air Pollution Control—An Experimental Field Study on Flue Gases from Sulfate Cellulose Plants

Cederlöf, Rune; Edfors, Marie-Louise; Friberg, L; Lindvall, Thomas

doi:10.1080/00022470.1966.10468449

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…One of the major problems encountered in the control of air pollution is the removal of gases whose odor thresholds are particularly low. One such gas, hydrogen sulfide, with an odor threshold of 0.007 ppm (Cederlof, et al, 1966), contributes significantly to the malodor associated with kraft pulp mills, petroleum refineries, and other key industries. Although the widely used Claus reaction will remove substantial quantities of this gas, the maximum conversion is only about 92% (Davis, 1972).…”

Section: Introductionmentioning

confidence: 99%

Oxidation of Hydrogen Sulfide over Cobalt Molybdate and Related Catalysts

Ross¹,

Jeanes²

1974

Product R&D

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The activity of cobalt molybdate and related catalysts in the oxidation of hydrogen sulfide at concentrations below 4000 ppm has been studied. The effect of oxygen concentrations up to 4.3% and water vapor concentrations up to 12% is described. Cobalt molybdate and mixtures of cobalt and molybdenum oxides supported on a-alumina were the most effective catalysts and at 25OoC allowed the reduction of hydrogen sulfide to levels below its odor threshold provided that the initial concentration of hydrogen sulfide did not exceed 1000 ppm. The effect of sulfiding on catalyst activity was examined and a possible method for regeneration is described.

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Section: Introductionmentioning

confidence: 99%