การกำจัดสีโรดามีน บีด้วยเปลือกสละ

Abstract

The adsorption of the Rhodamine B from synthetic dye solution by Zalacca shell has been investigated.. The effect of particle size, contact time, pH and initial concentration of dye have been studied. The study found that the suitable particle sizes for adsorption of the dye were 25-35 mesh. The equilibrium time for adsorption Rhodamine B was 15 hour, It was found that the adsorption capacity of Zalacca shell increased with increasing initial concentration of Rhodamine B dye and the suitable pH for adsorption of Rhodamine B dye was pH 3. The results of adsorption isotherm confirmed that the adsorption of Rhodamine B dye fitted well to Langmuir isotherm with monolayer adsorption. The resulted from the adsorption isotherm showed that the maximum value of adsorption Rhodamine B dye was 149 mg/g