First Advisor

Gary L. Gard

Date of Publication

12-14-1973

Document Type

Thesis

Degree Name

Master of Arts (M.A.) in Chemistry

Department

Chemistry

Language

English

Subjects

Soil surveys -- Oregon -- Willamette River Watershed, Gases -- Absorption and adsorption, Carbon monoxide

DOI

10.15760/etd.1997

Physical Description

1 online resource (vii, 49 pages)

Abstract

Recent work indicates that microorganisms present in soils can remove carbon monoxide from the atmosphere and as such constitutes a major sink. B.E.T. adsorption studies were carried out on representative soils from the Willamette Valley River Basin in order to determine their adsorptive characteristics for carbon monoxide and other gases. Attempts were made to isolate, through a non-soildestructive sterilization, the adsorptive characteristics of the soil microorganisms as well as of the test soil.

The carbon monoxide studies show physical adsorption equivalent to the coverage of a few per cent of the surface area at 25.0° and 76 cm-Hg. Adsorption studies also shows that the soil rather then the microorganisms adsorbs most of the carbon monoxide. On sterilized soil, chemical sorption of oxygen was present and was probably caused by the oxidation of dead or damaged soil microorganisms. Hysteresis effects were present in all adsorption studies at 25.0° and appears to be a characteristic of the constituents of the soil and represents a new and as yet unexplained phenomenon.

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Persistent Identifier

http://archives.pdx.edu/ds/psu/15333

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