甲醛-苯氧乙酸树脂对金属离子的交换性能研究  

studies on exchange properties of formaldehyde-phenoxyacetic acid resin FOR METAL IONS

作　　者：刘春萍[1] 曲荣君[1,2] 刘淑芬[1] 孙琳[1] 卢永上[1] 李勇[1] 成国祥[3] 李雪梅[4] 

机构地区：[1]烟台师范学院化学系 [2]天津大学材料科学与工程学院天津300072 [3]天津大学材料科学与工程学院 [4]山东大学化学院

出　　处：《离子交换与吸附》2002年第3期199-204,共6页Ion Exchange and Adsorption

基　　金：国家自然科学基金 (29906008); 山东省自然科学基金 (Q99B15);烟台师院青年基金资助

摘　　要：研究了甲醛-苯氧乙酸树脂对重金属离子铅、镉、汞的交换性能,并考察了温度、pH值、浓度等因素对交换性能的影响。结果表明,树脂对3种重金属离子的等温交换过程均符合Langmuir交换等温式,交换受液膜扩散控制;其交换容量可分别达1.85mmol/g、1.73mmol/g、1.13mmol/g。In this paper, the static exchange properties of formaldehyde-phenoxyacetic acid resin for metal ions Pb2+, Cd2+ and Hg2+ were studied. The effects of factors such as temperature, pH value, concentration of solution, etc. on the exchange properties were investigated. The results showed that the process of isothermal exchange fits the Langmuir equation. The exchange velocity is controlled by liquid film diffusion. The exchange capacities of the resin for the above-mentioned metal ions were 1.85,1.73, and 1.13mmol/L respectively.

关 键 词：甲醛-苯氧乙酸树脂 金属离子 交换性能 弱酸性离子交换树脂 Pb(Ⅱ) Hg(Ⅱ) 废水处理 铅(Ⅱ) 镉(Ⅱ) 汞(Ⅱ) 交换动力学 交换容量 

分 类 号：O647.316.2[理学—物理化学] X703.1[理学—化学]