Efficiency evaluation of orange and banana peels for dye removal from synthetic industrial effluent

Abstract

With this increase in the urbanization and industrialization of the textile industry and paint industry, there is a vast utilization of the dye in the daily use. This had led to the increase in the availability of the dye waste among the effluent water from such industry. The present work focuses on evaluation of the effectiveness of using the naturally available orange and banana peels as the biosorbent for the removal of the different dyes available in the waste effluents from most of the industries. The use of such bio-based materials used to decrease the environmental impact of the harmful adsorbents. The parameters such as different initial concentration of dyes, adsorbent dosage, pH of the solution and the impeller speed were evaluated. The outcome of the experiments focused to show that the adsorption efficiency of banana peels and orange peels amplified with an augmentation of the adsorbent dosage. Approximately 76 % of the removal of dye was achieved with a blend of the adsorbent dosage of 1 g/50 mL of dye solution, 200 rpm and a pH of 8. The equilibrium experimental data supported the validation of the Langmuir model of adsorption suggesting the monolayer adsorption. The maximum adsorption capacity for the exclusion of Malachite green utilizing orange and banana peel is obtained as 42.55 and 40.98 mg g−1 respectively.