A novel sandwich supported liquid membrane system for simultaneous separation of copper, nickel and cobalt in ammoniacal solution
A novel sandwich supported liquid membrane system for simultaneous separation of copper, nickel and cobalt in ammoniacal solution
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一种新型夹层支撑液膜系统，用于同时分离氨溶液中的铜、镍和钴
DOI：
10.1016/j.seppur.2016.09.045
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发表时间：
2017-02-01
影响因子：
8.6
通讯作者：
Yang, Xiangjun
中科院分区：
文献类型：
--
作者：
Duan, Hengpan;Wang, Ziyue;Yang, Xiangjun
本文提出了一种基于支撑液膜（SLM）系统的双膜三室电解池（三明治SLM）同时选择性分离氨/氯化铵溶液中的铜、钴和镍的新方法。该模型使用两个聚偏二氟乙烯（PVDF）膜，两者均负载有20体积%的聚偏二氟乙烯。Acorga M5640煤油在两个剥离阶段的硫酸浓度对铜，镍，钴的运输的影响进行了评估。实验结果表明，铜和镍通过第一层膜进入含有5.0 g/L H2SO 4的中心室，而钴留在第一进料室。然后铜继续穿过第二个膜进入含有50.0 g/L H2SO 4的第三个隔室，而镍保留在第二个隔室中。超过99.5%的钴，98.0%的镍，和98.9%的铜被分离到三个不同的隔室从混合进料溶液含有100 mg/L的这三个物种与运输时间为36小时。最大铜通量为1.59 × 10 ~（-6）mol/m ~（2）·s。结果表明，铜，镍，钴在氨溶液中可以有效地分离这种新型的三明治SLM。(C)© 2016 Elsevier B. V.版权所有。
In this paper, a new strategy based on a supported liquid membrane (SLM) system for the simultaneous and selective separation of copper, cobalt, and nickel in ammonia/ammonium chloride solutions, using a two-membrane-three-compartment cell (sandwich SLM) was proposed. This model used two polyvinylidene difluoride (PVDF) membranes both loaded with 20 vol.% Acorga M5640 in kerosene. The effects of H2SO4 concentrations in two stripping phases on the transport of copper, nickel, and cobalt were evaluated. Experimental results indicated that copper and nickel were transported through the first membrane into the central compartment which contained 5.0 g/L H2SO4, while cobalt remained in the first feed compartment. Then copper continued to penetrate through the second membrane into the third compartment which contained 50.0 g/L H2SO4, while nickel remained in the second compartment. More than 99.5% of cobalt, 98.0% of nickel, and 98.9% of copper were separated into the three different compartments from a mixed feed solution containing 100 mg/L each of these three species with a transport time of 36 h. A maximum copper flux of 1.59 x 10(-6) mol/m(2).s was obtained. The results establish that copper, nickel, and cobalt in ammonia solution can be efficiently separated by this novel type of sandwich SLM. (C) 2016 Elsevier B.V. All rights reserved.