The sorption-desorption behaviour of the anionic dye Lissamine Green (C.I. 44090) on perchloric acid-treated alumina of surface pH 1.0 - 9.0 was investigated. The adsorption is found to be pH-dependent; thus, the adsorption decreases with increase of pH (1.0 - 9.0). Variation in sorption with time (10 min - 48 hr), temperature (30° - 60°) and regeneration of the substrates with aqueous electrolytes is also reported. The retarding influence and the desorption efficiency of the inorganic anions is in the order: PO4- > C2O42- > SO42- > CH3COO- > Cl- ion-exchange mechanism has been proposed for the process, and the results show the evokement of anion-eitchange properties of alumina.
Cite this article:
Kar, Mundhara, Kaur and Tiwari (1988). Sorption-desorption behaviour of the anionic dye, Lissamine green on alumina pretreeted with perchioric acid. Journal of Ravishankar University (Part-B: Science), 1(1), pp. 33-42.