Nylon 6-mordenite composite membranes having porous morphology were applied to the selective separation of heavy metal ions from aqueous heavy metal solution with Pb2+, Cu2+ and Cd2+. The membrane preparation was carried out in the wet phase inversion method using methanol/CaCl2/Nylon 6 solution. The resultant membranes containing mordenite powders with 10, 20 and 30 wt% loading were obtained as coagulated in water. Depending on the mordenite loading in the composite membranes, the porous morphology was changed in a finger-like and/ or sponge structure. In batch adsorption experiments, the higher mordenite loading in the composite membranes was the higher separation capacity for heavy metal ions. The composite membrane loading 30 wt% mordenite (NZC 30) had the optimal performance of Pb2+ ion capture in the maximum adsorption capacity of 38.5 mg/g at pH 5. The batch separation factor calculated using Langmuir isotherm parameters supported the selective adsorption of Pb2+ relative to those of Cd2+ and Cu2+. In addition, the permeabilities of water and the mixed ion solution with 20 mg/L concentration were investigated. The value of the separation factor of NZC 30 was 9.2 for Pb2+ against Cu2+. In the regeneration of the reused membranes, the values of the regeneration efficiency of NZC 30 still maintained a good separation performance in Pb2+ with 24.1 mg/g at 5-time reusing. The porous nylon 6-mordenite zeolite composite membranes were fabricated by the wet phase inversion method for the first report. The composite membrane containing 30 wt% mordenite (NZC 30) showed the extraordinary performance for the separation of Pb2+ with 89.9 % from the mixture solution. The separation factor of NZC 30 was 9.2 for Pb2+against Cu2+ The composite membranes can be used as a low-cost and environmentally friendly adsorbent for the separation of heavy metals from wastewater. The porous nylon 6-mordenite zeolite composite membranes were fabricated by the wet phase inversion method for the first report. The composite membrane containing 30 wt% mordenite (NZC 30) showed the extraordinary performance for the separation of Pb2+ with 89.9 % from the mixture solution. The separation factor of NZC 30 was 9.2 for Pb2+against Cu2+ The composite membranes can be used as a low-cost and environmentally friendly adsorbent for the separation of heavy metals from wastewater. Porous nylon 6-mordenite composite membranes were fabricated from methanol/CaCl2/Nylon 6 solution via the wet phase inversion method and applied to selective separation of Pb2+, Cu2+ and Cd2+ from mixture solution

中文翻译：

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甲醇/氯化钙湿相转化用于尼龙 6-丝光沸石复合膜选择性分离重金属离子

将具有多孔形态的尼龙6-丝光沸石复合膜应用于含Pb2+、Cu2+和Cd2+的重金属水溶液中重金属离子的选择性分离。使用甲醇/CaCl2/尼龙6溶液以湿相转化法进行膜制备。在水中凝结时获得含有负载量为 10、20 和 30 重量％的丝光沸石粉末的所得膜。根据复合膜中丝光沸石的负载量，多孔形态在指状和/或海绵结构中发生变化。在批量吸附实验中，复合膜中丝光沸石负载量越高，对重金属离子的分离能力越高。负载 30 wt% 丝光沸石 (NZC 30) 的复合膜具有最佳的 Pb2+ 离子捕获性能，最大吸附容量为 38。在 pH 5 时为 5 mg/g。使用朗缪尔等温线参数计算的批次分离系数支持 Pb2+ 相对于 Cd2+ 和 Cu2+ 的选择性吸附。此外，还研究了水和浓度为 20 mg/L 的混合离子溶液的渗透率。NZC 30 的分离因子值对于 Pb2+ 与 Cu2+ 为 9.2。在重复使用的膜的再生中，NZC 30 的再生效率值在 Pb2+ 中仍保持良好的分离性能，5 次重复使用时为 24.1 mg/g。多孔尼龙 6-丝光沸石复合膜是通过湿相转化法制备的，这是首次报道。含有 30 wt% 丝光沸石 (NZC 30) 的复合膜显示出非凡的性能，可从混合溶液中分离 89.9% 的 Pb2+。NZC 30 对 Pb2+ 与 Cu2+ 的分离系数为 9.2 该复合膜可作为一种低成本、环保的吸附剂，用于从废水中分离重金属。多孔尼龙 6-丝光沸石复合膜是通过湿相转化法制备的，这是首次报道。含有 30 wt% 丝光沸石 (NZC 30) 的复合膜显示出非凡的性能，可从混合溶液中分离 89.9% 的 Pb2+。NZC 30 对 Pb2+ 与 Cu2+ 的分离系数为 9.2 该复合膜可作为一种低成本、环保的吸附剂，用于从废水中分离重金属。