Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/4ACA8244-7E4E-499C-9265-FC3F4FB99EF8 | ||
| Year | 2004 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | E. T. Vogler, C. V. Chrysikopoulos ," An Experimental Study of Acoustically Enhanced NAPL Dissolution in Porous Media " ,A. J. ,vol.50 ,no.12 ,pp.3271 - 3280,2004.doi:10.1002/aic.10221 https://doi.org/10.1002/aic.10221 | ||
| Appears in Collections |
The effects of acoustic waves on the dissolution of dense nonaqueous phase liquids inwater saturated porous media are investigated. Experiments of trichloroethylene (TCE)ganglia dissolution within a water saturated column, packed with glass beads, areconducted. Acoustic waves with pressure amplitudes ranging from 0 to 1625 Pa andfrequencies ranging from 0 to 285 Hz are employed to the interstitial fluid at the inlet ofthe packed column. Effluent dissolved TCE concentrations are observed to increase up to120% in the presence of acoustic pressure waves compared to the case where TCEdissolution without acoustic waves is monitored. The observed effluent dissolved TCEconcentration increase is attributed to enhanced mass flux at the TCE-water interface,caused by acoustic waves. Highest dissolution rates occur at discrete frequencies suggestingresonance effects or the presence of standing waves. Although acoustic wavesenhance TCE dissolution, they dissipate almost exponentially with distance from theacoustic source
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