THE ADSORPTION OF ACID BLUE 324 ON EUROPEAN SEABASS FISH SCALES

Abstract

In this study, the adsorption of Acid blue 324 (AB 324) on European seabass fish scales (LBP) wasinvestigated in a batch system; the optimum environmental conditions were found as initial pH 2.0,temperature 25 o C, initial AB 324 concentration 200 mg/L and adsorbent concentration 1.0 g/L. Theisoelectric point for the studied fish scale was determined as 7.25; the high removal amounts wereobtained at lower pH values than the isoelectric pH value. It was observed that the adsorptionequilibrium fitted well to the Langmuir isotherm model and the experimental kinetic data weresuccessfully described with the pseudo second order kinetic model. It was concluded that the externaldiffusion as well as intraparticle diffusion were effective in the actual adsorption process.Thermodynamic studies showed that the adsorption of AB 324 on LBP is exothermic and spontaneousin nature. The characterization of adsorbent before and after adsorption was carried out with FTIR, SEMand EDX analysis methods.