Groundwater Cleanup byin-situSparging. IV. Removal of Dense Nonaqueous Phase Liquid by Sparging Pipes
- 1 December 1993
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 28 (17-18) , 2529-2551
- https://doi.org/10.1080/01496399308017495
Abstract
Mathematical models for describing the removal of dense nonaqueous phase liquid (DNAPL) droplets dispersed in a contaminated aquifer by air sparging are described. The sparging configurations considered are 1) a single air pipe discharging at the bottom of the aquifer and 2) a single horizontal slotted pipe discharging at the bottom of the aquifer. Diffusion transport of VOC is assumed to take place from spherical DNAPL droplets through a thick stagnant water layer in a porous medium to the moving aqueous phase. The dependence of removal rates on model parameters is explored.Keywords
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