Equilibrium, Isotherm Studies of Dye Adsorption onto Orange Peel Powder

Abstract

Nowadays adsorption is an effective method for removal of dyes from aqueous solution using different sources of low cost agricultural wastes. However, the adsorption characteristics of two basic dyes namely crystal violet (CV) and methylene (MB) from their aqueous solution using treated orange peel (OP) waste were investigated in a batch mode technique. The effect of variations parameters which are affecting factors on the rate of adsorption for both dyes such as initial dye concentration, adsorption time, adsorbent dosage, and reaction volume were studied. According to data obtained during the experimental work the following results were obtained: i) adsorption time of 30 min, initial concentration of both dye 40 mg/l, solution pH 6.5, and 50 ml as working solution have been selected as the optimum conditions by the batch process; ii) the removal percentage and the maximum adsorption capacity of CV and MB onto OP were found to be 97.5% and 99.2%, and 27.17mg/g and 25.87mg/g respectively iii) This study showed that the use of orange-waste peel as adsorbent for the removal of CV and MB from colored water is possible.