mass transfer study of water hardness removal by ion exchange in batch conical air spouting bed

In this paper, the function of a batch conical spouting bed for water hardness removal by using of ion exchange resin has been investigated# the effect of different parameters such as different initial total hardness and superficial air velocity has been studied# the experiments result showed that with the increase of air superficial velocity volumetric mass transfer coefficient has been increased# dimensional analysis of the present mass transfer data led to the following correlations:for total hardness: jd=0#17〖(re*fr)〗^(-0#25) the importance of this mass transfer correlation in the design and operation of air spouting beds used for conducting ion exchange reaction was highlighted