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Optimization of nanofiltration separation process of nitrate in different valence states by orthogonal method

Authors： ZHAO Zhenzhen, XIAO Chunyan, FENG Shichao, SONG Weijie, WAN Yinhua, LI Shaohua

Units： 1Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, China; 2State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, China; 3Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China; 4Institute of Rare Earths, Chinese Academy of Sciences, Ganzhou 341000, China

KeyWords： NF membrane process; orthogonal test; nitrate; separation factor

ClassificationCode：TQ085

year,volume(issue):pagination： 2022,42(4):51-58

Abstract：

For the urgent demands in separating nitrate in different valence states from rare earth leaching solutions, this paper studied the separation performance of NF5 nanofiltration membrane on NaNO3, Ca(NO3)2, Nd(NO3)3 and Ce(NO3)4 mixed salt solution using the orthogonal test and investigated the influence of salt concentration, pressure, flow rate and pH on the separation factors of nitrate in different valences states, and determined the optimal conditions to separate cationic in different valences states of nitrate. The results under optimal conditions of nitrate in different valence states were showed as follows: SFNa/Ca = 18.23, SFNa/Nd = 35.20, SFNa/Ce = 33.26, SFCa/Nd = 4.55, SFCa/Ce = 4.45, SFNd/Ce = 1.10, indicating that NF5 nanofiltration membrane had excellent separation performance in monovalent and high-valence ions ( SFNa/Ca, SFNa/Nd and SFNa/Ce ), and had a certain separation efficiency for divalent and higher than divalent ions ( SFCa/Nd and SFCa/Ce ), but had poor separation selectivity on trivalent and tetravalent ions ( SFNd/Ce ). The research would be important for the separation of salts in different valence states by nanofiltration.

Funds：

赣州市人民政府-中国科学院绿色过程制造创新研究院稀土产业基金项目（IAGM 2020DA02）；国家重点研发计划项目(2020YFC1909001)；国家自然科学基金项目（42007175）资助

AuthorIntro：

赵珍珍（1994-）,女，河南焦作人，硕士生，从事分离膜制备与应用研究

Reference：

[1] Krishnan S, Zulkapli N S, Kamyab H, et al. Current technologies for recovery of metals from industrial wastes: An overview[J]. Environmental Technology & Innovation, 2021, 22: 101525.
[2] Talan D, Huang Q. Separation of thorium, uranium, and rare earths from a strip solution generated from coarse coal refuse[J]. Hydrometallurgy, 2020, 197: 105446.
[3] Zhang W, Feng D, Xie X, et al. Solvent extraction and separation of light rare earths from chloride media using HDEHP-P350 system[J]. Journal of Rare Earths, 2021, 40(2): 328-337.
[4] Swain N, Mishra S. A review on the recovery and separation of rare earths and transition metals from secondary resources[J]. Journal of Cleaner Production, 2019, 220: 884-898.
[5] Luo J, Wan Y. Effects of pH and salt on nanofiltration—a critical review[J]. J Membr Sci, 2013, 438: 18-28.
[6] Zhang Y, Wang L, Sun W, et al. Membrane technologies for Li+/Mg2+ separation from salt-lake brines and seawater: A comprehensive review[J]. Journal of Industrial and Engineering Chemistry, 2020, 81: 7-23.
[7] 黄嘉臣, 罗建泉, 郭世伟, 等. 化学清洗对聚酰胺纳滤膜的影响机制研究进展[J]. 膜科学与技术, 2020, 40(1): 188-195.
[8] Yang Z, Fang W, Wang Z, et al. Dual-skin layer nanofiltration membranes for highly selective Li+/Mg2+separation[J]. Journal of Membrane Science, 2020, 620: 118862.
[9] Murthy Z V P, Choudhary A. Separation of cerium from feed solution by nanofiltration[J]. Desalination, 2011, 279(1-3): 428-432.
[10] Murthy Z V P, Choudhary A. Application of nanofiltration to treat rare earth element (neodymium) containing water[J]. Journal of Rare Earths, 2011, 29(10): 974-978.
[11] 张小亚, 苑宏英, 石雪莉, 等. 氯化钠/硫酸钠体系的纳滤分盐试验分析[J]. 膜科学与技术, 2020, 40(5): 111-117.
[12] Qi B, Luo J, Chen X, et al. Separation of furfural from monosaccharides by nanofiltration[J]. Bioresour Technol, 2011, 102(14): 7111-7118.
[13] Bentouhami E, Bouet G M, Meullemeestre J, et al. Physicochemical study of the hydrolysis of Rare-Earth elements (III) and thorium (IV)[J]. Comptes Rendus Chimie, 2004, 7(5): 537-545.

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