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本文采用橘皮(OP)吸附剂从水介质中去除Cd(Ⅱ).用萃取剂Cyanex272对生物质进行预处理活化,找到了去除Cd(Ⅱ)的最佳操作条件.通过用几种模型拟合实验数据后,发现最佳拟合模型为Langmuir模型和准二级动力学模型.不同吸附剂对Cd(Ⅱ)的吸附量顺序依次为272SCO＞SCO＞272CO＞272OP＞CO＞OP.272SCO的最大吸附量为0.866 3 mol·g-1,Cd(Ⅱ)的吸附量严格依赖于pH,所有吸附剂的最适合pH范围为5.5～6.0.对于吸附剂的再生,以0.1 mol·L-1 HCl为最佳解吸剂,解吸率接近100％.萃取剂Cyanex 272预处理后的橘皮可作为一种高效、低成本的吸附剂,用于去除水溶液中的镉.“,”Orange peel (OP) adsorbents were used for removing Cd(Ⅱ) from aqueous media.Biomass was pre-treated with extractant Cyanex272 after chemical modification.Optimal operation conditions for Cd(Ⅱ) removal were studied in batch experiments.Several models were used to fit experimental data and the best-fit models were Langmuir model and pseudosecond order model.The adsorption capacity obtained from the Langmuir model for Cd(Ⅱ)binding decreased in the order of 272SCO＞SCO＞272CO＞272OP＞CO＞OP.The maximum adsorption capacity of 272SCO was 0.866 3 mol· g-1.Adsorption of Cd(Ⅱ) strictly depends on pH,and the optimal pH is in the range of 5.5 to 6.0 for all adsorbents.For the regeneration of the adsorbents,0.1 mol · L-1 HCl is the optimal desorption agent and the percentage of desorption is almost 100％.Orange peel pre-treated with extractant Cyanex272 can be used as an effective and low-cost adsorbent for cadmium removal from aqueous solutions.