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The ignition at low temperatures of the organic matter in soils

Published online by Cambridge University Press:  27 March 2009

J. S. Hosking
J. S. Hosking
Affiliation:
Waite Agricultural Research Institute, Adelaide, South Australia
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Extract

The low temperature ignition of soil organic matter has been investigated for temperatures ranging from 100 to 500° C.

Appreciable losses are found to occur below 100° C.; up to 200° C. heating results essentially in the distillation of volatile constituents, while between this temperature and 300° C. destructive distillation is the major reaction. These reactions are responsible for the removal of 85% of the soil organic matter.

By 300° C. the greater part of the residual organic matter consists of carbonaceous material, and the final reaction is simple ignition of this material.

Two hours’ heating of the soil at 450° C. or about half an hour at 500° C. are recommended for the removal of 99% of the soil organic matter.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 28 , Issue 3 , July 1938 , pp. 393 - 400
Copyright
Copyright © Cambridge University Press 1938

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References

REFERENCE

Walkley, A. (1935). J. agric. Sci. 25, 588–609.CrossRefGoogle Scholar