What was found
TAKE OFF ROLL, THICK WHITE SMOKE OBSERVED IN COCKPIT & CABIN AS REPORTED BY FLIGHT ATTENDANT, NO OTHER. ABNORMAL INDICATIONS, SMOKE SMELLED LIKE BURNING, DE-ICING FLUID. EXAMINATION OF DISC, RESIDUAL SMELL ON CABIN & GVI OF ECS SYS INDICATES THAT SUSPECTED DE-ICING FLUID CONTAMINATION OCCURRED PRIOR TO TAKEOFF. R & R RT & LT COALESCER ELEMENTS IAW AMM 21-51-13. OPERATIONS CHECKED GOOD, NO SMELL OR SMOKE NOTED AFTER 2+ OPERATION CYCLES UNDER APU & ENG PNEUMATIC FEED, ACFT OK FOR SERVICE.