One-step recovery of copper(II) from ammonia/ammonium sulfate solution by combining supported liquid membrane and electro-deposition process was investigated. The fundamental parameters enhancing copper transport through a supported liquid membrane, such as carrier concentration of N902 extractant in the membrane, H₂SO₄ concentration in the stripping phase, temperature and ultrasonication, were examined. The results show that three auxiliary measures including higher operating temperature, ultrasonic assistance and electro-deposition process can all improve copper transport efficiency. Nearly, all of copper in feed phase were transported across the supported liquid membrane by using simultaneously the electro-deposition process and ultrasonic assistance after 10 h with a flux of 3.35 × 10^–5 mol m⁻² s⁻¹ under the optimal conditions: 100 mg L⁻¹ copper in 1.0 mol L⁻¹ each of ammonia and ammonium sulfate solution as the feed phase, 20 vol% N902 in kerosene as carrier, 80 g L⁻¹ H₂SO₄ as the stripping phase, stirring rate of 800 rpm in two aqueous phases and operating temperature of 40 °C. In the meantime, 83.8% copper ions in stripping phase were recycled to particles deposited on the cathode surface. Furthermore, membrane stability was also evaluated and shown to be satisfactory for at least seven runs (70 h). Application of the assembled supported liquid membrane system has been found to be successful in the facilitated recovery of copper from ammoniacal solution.

中文翻译：

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多重协同作用有利于负载液膜从氨溶液中回收铜

研究了负载液膜与电沉积相结合从氨/硫酸铵溶液中一步回收铜（II）的方法。增强铜通过支撑的液体膜的传输的基本参数，例如膜中N902萃取剂的载流子浓度，H ₂ SO ₄检查了汽提阶段的浓度，温度和超声处理。结果表明，较高的工作温度，超声辅助和电沉积工艺这三种辅助措施均可提高铜的传输效率。在最佳条件下，通过同时使用电沉积过程和超声辅助，在10 h后以3.35×10 ^–5  mol m ^-2  s ^-1的通量，同时将进料相中的所有铜全部转移通过支撑的液膜：以100摩尔L ^-1铜和1.0摩尔L ^-1的氨水和硫酸铵溶液为原料相，以煤油中20体积％N902为载体，80 g L ^-1 H ₂SO ₄作为汽提相，在两个水相中的搅拌速度为800 rpm，操作温度为40°C。同时，汽提相中的83.8％铜离子被循环利用，沉积到阴极表面。此外，还评估了膜的稳定性，并显示至少七次运行（70小时）令人满意。已经发现组装的支撑液膜系统的应用成功地促进了从氨溶液中回收铜。