An experimental study was conducted on the removal of fibrous particles from particle-laden air using a single cyclone and a dual cyclone of the same volume. The fibrous particles were generated from terry-towels and cotton clothes. Prior to comparing the collection efficiency for fibrous particles between the single and the dual cyclones, the effect of a separating plate used for the inlet of the dual cyclone was investigated. The collection efficiency of the dual cyclone varied significantly depending on the length of the separating plate, that is, more than a certain length of the separating plate was required for the high collection efficiency. After the final configuration of the dual cyclone was proposed, collection efficiency and pressure drop of the single and the dual cyclones were measured at various flow rates ranging from 700 to 2000 L/min. From the comparison, the dual cyclone showed higher collection efficiency and lower pressure drop than the single cyclone. Especially, the dual cyclone developed in this study was able to remove the fibrous particles with the collection efficiency greater than 95%. (C) 2014 Elsevier B.V. All rights reserved.