橘子皮对水中亚甲蓝的吸附性能研究

Adsorption Performance in Binding of Methylene Blue in Aqueous Solution by Orange Peel

用低值廉价的橘子皮作为吸附剂对亚甲蓝染料废水进行吸附研究,考察了吸附平衡时间、溶液pH、染料浓度等因素对亚甲蓝吸附的影响,橘子皮主要含有羧基、氨基和磺酸基,橘子皮生物吸附剂对MB的吸附所需平衡时间为1h,在pH=10的条件下,生物吸附剂对MB的最大吸附量(qm)为370.3±31.0mg/g,等温吸附线符合Langmuir和Freundlich模式,研究结果表明:橘子皮对染料废水的吸附只需很短的时间则可达到吸附饱和,且吸附量大,具有很好的应用前景。

Orange peel was used equilibrium time, pH, dye concentration as low-cost adsorbent in binding of Methylene Blue. The effects of 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.