Abstract

Theresearch includes a study of the thermal dynamics of calcon dyeadsorption, by using Ultra-violetvisible spectroscopy technique ,Temperature has been investigated at (298-328k), The results obtained indicate that the adsorption of Calcon dye, increase with increase of temperature, In the other words, the adsorption process is endothermic and ΔH is positive. The effect of the acid function was also studied, the results obtained were follows according to the sequence :pH: 7 > 9 > 5