Optimization of the rapping process of an intermittent electrostatic precipitator F. Miloua, A. Tilmatine, R. Gouri, N. Kadous and L. Dascalescu Eur. Phys. J. Appl. Phys., 41 1 (2008) 81-85 Published online: 19 December 2007 DOI: 10.1051/epjap:2007175