JEQ Journal of Natural Resources and Life Sciences Education
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Published in J Environ Qual 3:161-166 (1974)
© 1974 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Land Disposal of Waste Gases III. Sorption Patterns from Buried Gas Injection Pipes1

S. Miyamoto, A. W. Warrick and R. J. Prather2

ABSTRACT

The advancement of sorption fronts resulting from the injection of reactive gases into soils through buried porous pipes is analyzed mathematically and verified experimentally with small scale laboratory models. The sorption front advances in ellipsoidal patterns with faster rates above the pipes for a homogeneous profile. The reacted portion of soil when the front first intersects the ground surfaces is larger for corrugated surfaces than for plane surfaces. The corrugated surface is chosen with the "highest" elevation point directly over the injection pipe, the "lowest" point midway between. When a shallow sorptive layer overlies a nonreactive material, the shape of the front is not circular but extends towards the midpoint between parallel pipes where the most water would infiltrate. The concentration of reactants in the outflow increases sharply as the front passes a part of the ground surfaces. The sorption fronts determined experimentally by injecting a dry air and nitrogen dioxide mixture into a small soil tank agreed well with the predicted positions based on an instantaneous reaction.

Key Words: air pollution abatement • miscible displacement

NOTES

1 Contribution from Arizona Agricultural Experiment Station Paper 2157. Supported in part by Rockefeller Foundation Grant 70073.

2 Postdoctoral Research Associate, Associate Professor, and Research Assistant, respectively.

Received for publication July 13, 1973.




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Copyright © 1974 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.