10.2190/9402-N69Y-KHGM-YE9N 9402N69YKHGMYE9N 101 GAS TRANSFER FROM SMALL SPHERICAL BUBBLES IN NATURAL AND INDUSTRIAL SYSTEMS 101 123 20030625 20030625 20030625 20030625 9402N69YKHGMYE9N.pdf http://baywood.metapress.com/link.asp?target=contribution&id=9402N69YKHGMYE9N 2 TARIQ AHMED MICHAEL J. SEMMENS Earth Tech, Inc., Bloomfield, New Jersey University of Minnesota, Minneapolis The bubble terminal velocity and the mass transfer behavior of a small (diameter 0.2 cm) spherical bubble rising through stagnant water are reviewed. Equations relating the bubble diameter and gas composition as a function of depth are presented. The gas-liquid mass transfer co-efficient was estimated from observed bubble diameter versus time data reported in the literature. The system of equations has been solved by numerical integration to predict the behavior of a bubble as it rises through the water column. 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