Adsorption performance in binding of Methylene Blue in aqueous solution by orange peel
橘子皮对水中亚甲蓝的吸附性能

Orange peel was used as low-cost adsorbent in binding of Methylene Blue. The effects of equilibrium time, pH, dye concentration have been studied. Carboxyl, amine and phosphonate functional groups were present in the orange peel. The equilibrium time was 1 hour, the maximum adsorption capacities of the orange peel was 370.3±31.0 mg/g at pH 10. The Langmuir and Freundlich isotherms were well fitted in this biosorption system. Results showed relatively higher rate constant and biosorption capacities. These adsorption performance indicate the orange peel as a potentially economical adsorbent for dye removal.