改性橘皮粉对Cu2＋和Ni2＋的吸附行为研究  

Study on Adsorption of Cu^(2+) and Ni^(2+) by Modified Orange Peel

作　　者：苏国钧[1] 刘轲 SUGuo jun;LIU Ke(Key Laboratory of Environmental Chemistry,Ministry of Education College of Chemistry,Xiangtan University,Xiangtan 611105 China)

机构地区：[1]湘潭大学化学学院,环境友好化学教育部重点实验室,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2018年第3期16-19,共4页Natural Science Journal of Xiangtan University

摘　　要：橘皮粉用环氧化氯丙烷改性后再与DTPA-γ-Fe_2O_3复合,得到一种对重金属离子Cu^(2+)和Ni^(2+)有较强吸附能力的杂化材料.探讨了pH值、温度、时间等因素对其吸附性能的影响.结果表明:该材料对Cu2+和Ni 2+的最大吸附量分别为107.30mg/g和63.69mg/g,吸附为二级动力学过程,符合Langmuir等温吸附模型.ECH and DTPA-γ-Fe2O3 modified orange peel（OP）was prepared to improve its adsorption capacity for heavy metal ion such as Cu2＋and Ni 2＋.The biosorption of nickel and copper ions from aqueous solution by dried composite particles was studied as function of pH,temperature and adsorption time.From Langmuir isotherm,the adsorption capacity for Cu^（2＋） and Ni^（2＋） were 107.30 mg/g and 63.69 mg/g.The adsorption of Cu2＋and Ni 2＋obeyed the pseudo-second-order kinetics.The metal adsorption data were fitted well with Langmuir isotherms.

关 键 词：橘皮粉 Γ-FE2O3 二乙三胺五乙酸 环氧氯丙烷 

分 类 号：O152.1[理学—数学]