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Sorption of sulfur dioxide by calcareous soils

Journal Article · · Soil Sci. Soc. Am., Proc.; (United States)
The capacities and rates of calcareous soils to sorb SO/sub 2/ were measured by a steady-state method in which a stream of air plus SO/sub 2/ passed rapidly through the soil. At room temperature, air-dry calcareous soils were saturated with SO/sub 2/ within 10 to 15 min from a dry gas stream. The sorption capacities, 0.4 to 1.6 g of S/100 g of soil at 0.34 percent SO/sub 2/ in air, increased with SO/sub 2/ concentration and specific surface of the soils. Moisture in the air and/or soils increased the SO/sub 2/ sorption capacities to 0.8 to 6.4 g of S/100 g, approximately equivalent to the acid-titratable basicities, but saturation required several hours. The initial sorption rate ranged from 0.06 to 0.29 percent S/min in the moist soils. (auth)
Research Organization:
Univ. of Arizona, Tucson
OSTI ID:
7195203
Journal Information:
Soil Sci. Soc. Am., Proc.; (United States), Journal Name: Soil Sci. Soc. Am., Proc.; (United States) Vol. 39:2; ISSN SSSAA
Country of Publication:
United States
Language:
English