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Sorption of pollutant gases by soils. Final report, December 1, 1974-November 30, 1980

Technical Report ·
OSTI ID:6514616

The major objectives of this project were to study the ability of soils to sorb sulfur dioxide (SO/sub 2/), hydrogen sulfide (H/sub 2/S), nitrogen dioxide (NO/sub 2/), nitric oxide (NO), nitrous oxide (N/sub 2/O) and other pollutant gases, and to identify the mechanisms by which soils sorb these gases. The research performed showed that soils can sorb substantial amounts of SO/sub 2/, H/sub 2/S, and NO/sub 2/ by nonbological mechanisms and that the capacities of diverse soils for sorption of these gases can be predicted quite closely from consideration of selected soil properties. It also showed that soils sorb NO and N/sub 2/O only under anaerobic conditions and that soil microorganisms are responsible for sorption of these gases. Studies of the mechanisms by which soils sorb SO/sub 2/, H/sub 2/S, and NO/sub 2/ showed that most of the S retained by soils exposed to SO/sub 2/ is in the form of sulfate and sulfite, that most of the S retained by soils exposed to H/sub 2/S is in the form of elemental S and sulfate, and that most of the N retained by soils exposed to NO/sub 2/ is in the form of nitrate and nitrite. Research performed did not confirm recent work indicating that soils represent a major sink for atmospheric N/sub 2/O.

Research Organization:
Iowa State Univ. of Science and Technology, Ames (USA)
DOE Contract Number:
AS02-76EV02530
OSTI ID:
6514616
Report Number(s):
DOE/EV/02530-17; ON: DE81023349
Country of Publication:
United States
Language:
English

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Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
AIR POLLUTION
ANOXIA
CHALCOGENIDES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MICROORGANISMS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS OXIDE
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SOILS
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES