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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/7BBE3DCD-1C65-46E0-9DF6-CEE442A320FA | ||
| Year | 2007 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | J. M. Thomas , C. V. Chrysikopoulos , "Experimental investigation of acoustically enhanced colloid transport in water-saturated packed columns " , J. of Col. and Interf. Scienc. ,vol. 308 ,no. 1, pp. 200-207,2007.doi :10.1016/j.jcis.2006.12.062 https://doi.org/10.1016/j.jcis.2006.12.062 | ||
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The effects of acoustic wave propagation on the transport of colloids in saturated porous media were investigated by injecting Uranine (conservativetracer) as well as blue and red polystyrene microspheres (colloids of different diameters; 0.10 and 0.028 μm, respectively) into a columnpacked with glass beads. Experiments were conducted by maintaining the acoustic pressure at the influent at 23.0 kPa with acoustic frequenciesranging from 30 to 150 Hz. The experimental results suggested that colloid size did not affect the forward and reverse attachment rate coefficients.The acoustic pressure caused an increase in the effective interstitial velocity at all frequencies for the conservative tracer and colloids of both sizes,with maximum increase at 30 Hz. Furthermore, acoustics enhanced the dispersion process at all frequencies, with a maximum at 30 Hz.© 2007 Elsevier Inc. All rights reserved.
Copyright © DIAS 2013
