Abstract

Removal of Rhodamine B from aquoeus media was achieved onto animal bone meal (ABM) as a new low cost adsorbent. The latter was characterized by Infra-Red and X-ray diffraction. The adsorption of Basic Red 46 occurred by studying the effect of adsorbent amount, dye concentration, contact time and temperature. The adsorption rate data were analyzed using the pseudo-first order and the pseudo second order kinetics models to determine adsorption rate constants. Thermodynamic parameters were also evaluated for the dye-adsorbent system and revealed that the adsorption process is endothermic nature and spontaneous process at the temperatures under investigation. All results found concluded that animal bone meal could be effectively employed as effective new low cost adsorbent for the removal textile dyes from aquoeus solutions.

Key words: Rhodamine B, adsorption, kinetics, thermodynamic, animal bone meal, animal bone meal (ABM).