Sorption and Separation of Metals from Aqueous Solution by a Macromolecular Resin Containing Tri-n-Octylamine
Sorption and Separation of Metals from Aqueous Solution by a Macromolecular Resin Containing Tri-n-Octylamine
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含三正辛胺的高分子树脂对水溶液中金属的吸附分离
DOI：
10.1252/jcej.23.439
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发表时间：
1990
影响因子：
0.8
通讯作者：
H. Takeuchi
中科院分区：
文献类型：
--
作者：
S. Akita;H. Takeuchi
实验研究了二价锌在盐酸介质和以三正辛胺（TOA）为活性成分的高分子树脂之间的平衡分布。锌在浸渍吸附剂上的吸附可以通过以下化学计量关系表示：ZnCl2(aq.) + 2R3NHCl(s.) ↔ (R3NH)2ZnCl4(s.) 其中平衡常数为 3.59 × 105 kg-吸附剂·dm3/mol2。此外，在间歇操作中检查了使用吸附剂分离水溶液中的锌和铜的情况盐酸浓度超过5M。结果发现，该吸附剂对锌和铜具有高选择性分离，并且可以从 1.0 mol/dm3 盐酸溶液中令人满意地分离它们。还报道了 TOA 浸渍吸附剂对塔操作的适用性。
Experiments were conducted on the equilibrium distribution of divalent zinc between hydrochloric acid medium and macromolecular resin containing tri-n-octylamine (TOA) as an active component. The sorption of zinc on the impregnated sorbent can be expressed by the following stoichiometric relation:ZnCl2(aq.) + 2R3NHCl(s.) ↔ (R3NH)2ZnCl4(s.)where the equilibrium constant was found to be 3.59 × 105 kg-sorbent·dm3/mol2.Furthermore the separation of zinc and copper in aqueous solution by use of the sorbent was examined in a batch operation with hydrochloric acid concentrations over 5M. It was found that the sorbent gives high selective separation of zinc to copper, and they can be separated satisfactorily from a 1.0 mol/dm3 hydrochloric acid solution. The applicability of the TOA-impregnated sorbent to column operation is also reported.