中南大学学报（自然科学版）2011，Vol.42Issue(7)：1841-1846,6.
MgCl2改性橘子皮对水溶液中镉镍的吸附性能
Adsorption of Cd2+ and Ni2+ from aqueous solutions by MgCl2 modified orange peel
摘要
Abstract
Orange peel (OP) was modified with MgCI2 to prepare a novel orange peel adsorbent named as MgOP. The effects of pH, ratio of solid to liquid, temperature, contact time and metal ion mass concentration on Cd2+ and Ni2+ adsorption from aqueous solutions by MgOP were investigated. SEM and FTIR were used to characterize the adsorbent. The adsorption efficiencies of Cu2+ and Cd2+ by MgOP increase with the increase of pH and the ratio of solid mass to liquid volume. The temperature has little effect on adsorption capacity, and both adsorption processes are very fast and can attain equilibrium with 20 min. Both kinetics data of Cd2+ and Ni2+ are fitted to pseudo-second-equation. The maximum adsorption capacity of Cd2+ and Ni2+ by MgOP are 125.47 and 44.58 mg/g, respectively.关键词
改性橘子皮/吸附/Cd2+/Ni2+Key words
modified orange peel/adsorption/Cd2+/Ni2+分类
资源环境引用本文复制引用
郭学益,梁莎,肖彩梅,李晓静,田庆华..MgCl2改性橘子皮对水溶液中镉镍的吸附性能[J].中南大学学报（自然科学版）,2011,42(7):1841-1846,6.基金项目
国家自然科学基金资助项目(50774100) （50774100）
