Removing asbestos from substrate surface, to allow safe destruction or reuse of substrate, involves degreasing, coating with hydrochloric acid-based gel and ultrasonicating

摘要

An asbestos removal method involves (a) degreasing the substrate surface, (b) drying, (c) coating with a hydrochloric acid-based gel containing a surfactant, maintained at 40[deg] C, (d) applying an ultrasonic field using a transducer emitting ultrasonic waves of frequency 60 kHz and (e) rinsing and drying to provide an asbestos fiber-free surface.