(东北大学有色冶金系，沈阳110006)
摘 要: 研究用自制的甲壳素膜电渗析法分离钪与锡，该甲壳素与交联剂形成的阴离子交换膜能选择性地通过SnO32-阴离子，使济液中的Sc3+与SnO32+分离。实验考查了电压、酸度和浓度等条件对SnO32-透过率的影响。结果表明，在电压为20V，膜两侧pH差值△pH > 7时，在210min内SnO32与Sc3+能完全分离。用甲壳素膜分离，允许SnO32-浓度范围在300 mg/ L以下。
关键字: 电渗析 甲壳素膜 钪与锡的分离
BY CHITIN DIALYSIS MEMBRANE
（Department ofNonferrous Metallurgy,Northeastern University,Shenyang110006）
Abstract:The membrane separation of scandium and tin was investigated by dialysis method. The anion membrane was made from the chitin and cross linking agent. SnO2-3anion can pass through the anion membrane but Sc3+can not, so that both SnO2-3and Sc3+can be separated. The effects of some condition such as voltage, acidity and concentration on transmittance were examined. The result showed that at voltage 20 V,ΔpH>7, the thorough separation of SnO2-3and
Sc3+can be completed in 210 min. The concentration of SnO2-3to be separated using the anion membrane must be <300 mg/L.
Key words: electric dialysis chitin membrane separation of scandium and tin
