In this study, drying of boric acid (H3BO3) by microwave energy is inv
estigated. Using 100-700 W and 2450 1MHz microwave energy, boric acid
containing 5-10% moisture placed on a teflon lined belt is dried at 60
-10 degrees C selectively, without any loss of structural water. In th
is process, the microwave oven is first set to 35 degrees C, following
which wet boric acid having been previously heated to 35 degrees C is
placed inside. The sample first heats to 100 degrees C by the effect
of microwave energy, after which its temperature sharply drops, result
ing complete removal of moisture. This process does not lead to decomp
osition and disintegration of crystalline molecules and there are no c
ontaminants involved. (C) 1998 Elsevier Science S.A. All rights reserv
ed.