甲壳素渗析膜分离钪锡

来源期刊：中国有色金属学报1996年第3期

论文作者：翟秀静 高虹 翟玉春

文章页码：50 - 52

关键词：电渗析 甲壳素膜 钪与锡的分离

Key words：electric dialysis　chitin membrane　separation of scandium and tin

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SnO₃^2-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SnO₃^2-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SnO₃^2-浓度范围在300 mg/ L以下。

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. SnO₃^2- anion can pass through the anion membrane but Sc³⁺ can not, so that both SnO₃^2- and 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 SnO^2-₃ and Sc³⁺ can be completed in 210 min. The concentration of SnO^2-₃ to be separated using the anion membrane must be <300 mg/L.