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Closed Access item Application of high-power ultrasound to enhance fluid/solid particle separation processes

Authors:Riera, Enrique
Gallego Juárez, Juan Antonio
Rodríguez Corral, Germán
Elvira, Luis
González Gómez, Icíar
Keywords:Acoustic particle agglomeration, Filtration, Flue gas cleaning, Ultrasonic dewatering
Issue Date:2000
Publisher:Elsevier
Citation:Ultrasonics 38 : 642-646 (2000)
Abstract:The separation of fine particles from gases or liquids is a topic of permanent industrial attention. The use of ultrasonic energy to assist conventional separation techniques seems to be very promising. The adequate applications of high-intensity ultrasonic fields may contribute to improve the efficiency and capacity of the separation methods presently used. The specific mechanisms to ultrasonically enhance separation processes basically depend on the medium to be treated. In gas suspensions, where very fine particles have to be removed, ultrasonic action involves agglomeration of particles in order to increase their size and, consequently, to improve collection efficiency of conventional filters. In liquid suspensions, agglomeration is, in general, less efficient than in gases. Nevertheless, the ultrasonic energy is useful to dewater fine-particle high-concentration suspensions such as slurries and sludges. This paper deals with the application of acoustic energy to assist fluid/solid separation processes in gas and liquid suspensions and presents some theoretical and experimental results in specific applications.
Description:5 páginas, 6 figuras
Publisher version (URL):http://dx.doi.org/10.1016/S0041-624X(99)00129-8
URI:http://hdl.handle.net/10261/60637
ISSN:0041-624X
E-ISSNmetadata.dc.identifier.doi = DOI:1874-9968
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