COLUMN OPERATIONS FOR THE REMOVAL AND RECOVERY OF A HAZARDOUS DYE 'ACID RED - 27' FROM AQUEOUS SOLUTIONS, USING WASTE RNATERIA!S - BOTTOM ASH AND DE-OILED SOYAAlok Mittal and Lisha KurupAbstract Paper describes an operational model for the removal and recovery of a hazardous dye "Acid Red - 27* by employing power plant waste material, 'Bottom Ash' and an agriculture waste product, 'De-Oiled Soya'. The characterization of each adsorbent was carried out by chemical analysis as well as using LH and D.T.A curves. To assess the practical utility of the adsorbent, aqueous dye samples were eluting through fixed bed columns of respective adsorbents. Column operations also provided necessary parameters on applying mass transfer kinetic approach. Attempts were also made to recover the adsorbed dyes bypassing suitable solvent though the columns.
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