Rate of reaction of hydrogen sulfide-carbonyl sulfide mixtures with fully calcined dolomite

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00090a014· OSTI ID:5348650

Kamath, V S; Petrie, T W

Kinetic data are obtained by a gravimetric technique for rates of reaction of calcium oxide in fully calcined dolomite with hydrogen sulfide and hydrogen sulfide-carbonyl sulfide mixtures. The data are presented as values for a factor k defined by d(CAO) = -k (CAO) dt. At 600, 700, and 800 degrees C with (H/sub 2/S) from 0.5% to 5.0% by volume and (H/sub 2/S)/(COS) = 20 for mixtures, expressions for k show apparent rate constants and the dependence on sulfurous gas concentration. For example, at 700 degrees C, k = 1.43 x 10/sup -4/ (h2s) 1.06/S and k = 1.70 x 10/sup -4/ (H/sub 2/S + COS) 1.00/s. Since the date show first-order dependence on calcium oxide, k's for H/sub 2/S alone as the sulfurous gas and h2s-cos mixtures can be obtained for the same sample, free from scatter due to variations from sample to sample. Addition of values for k from runs with H/sub 2/S as the only sulfurous gas and runs with COS as the only sulfurous gas are compared to measurements with actual mixtures. K's for the mixtures are approximately 30% higher than the sum of the appropriate separate values.

• OSTI ID: 5348650
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 15:8; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBON COMPOUNDS
CARBON OXYSULFIDE
CARBONATE MINERALS
CARBONATES
CHALCOGENIDES
DOLOMITE
ENVIRONMENTAL EFFECTS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KINETICS
LAND POLLUTION
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
REACTION KINETICS
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
VERY HIGH TEMPERATURE