Abstract
Removal of Basic Red 46 from aqueous media was achieved onto Animal Bone Meal as a new low cost adsorbent. The latter was characterized by Infra-Red and X-ray diffraction. The adsorption of Basic Red 46 was occurred by studying the effects of adsorbent amount, dye concentration, contact time, pH media 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. The isotherms of adsorption data were analyzed by both adsorption isotherm models Langmuir and Freundlich. The monolayer adsorption capacity is 76 mg/g of animal bone meal. Nearly 30 minutes of contact time was found to be sufficient for the dye adsorption to reach equilibrium. Thermodynamic parameters were also evaluated for the dye-adsorbent system and revealed that the adsorption process is endothermic in nature. All results found concluded that animal bone meal could be effectively employed as effective new low cost adsorbent for the removal textile dyes from aqueous solutions.