The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45°. The bleed holes were located between the rib turbulators on either the leading or trailing surface. The tests were conducted under the conditions corresponding to various bleed ratios (BR = 0.0, 0.2 and 0.4) and rotation numbers (Ro=0.0, 0.2 and 0.4) at Re= 10,000. The results suggest that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate and the secondary flow. In the 90° angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing surface. However, it decreased on both surfaces in the 45° angled ribbed channel. As the bleed ratio increased, the Sherwood number ratios decreased on both the bleeding and non-bleeding surfaces for the 45° angled ribs, but increased on the bleeding surface for the 90° angled ribs.