钯由于其具有独特的催化储氢性能被广泛应用,但由于金属钯提取效率低,且大量的钯金属使用后得不到有效回收造成大量浪费。可通过原位生长法合成ZIF-8/聚偏氟乙烯(PVDF)杂化膜,并添加不同比例聚丙烯酸钠和聚乙烯亚胺聚电解质对ZIF-8/PVDF杂化膜进行预处理,考察不同聚电解质及不同金属质量比情况下杂化膜对金属钯的截留率和对不同浓度含钯溶液提取性能的影响。
Pd is widely used in industries due to its unique property of catalyst and hydrogen storage.However,due to the low extraction efficiency of metal Pd,and a certain amount of metal Pd cannot be effectively recovered after usage,resulting in large amount of waste.2-methylimidazole zinc salt (ZIF-8)/polyvinylidene fluoride (PVDF) hybrid membrane was successfully synthesized by in situ method.Pretreatment of ZIF/PVDF hybrid membranes by adding different ratios of PEI and PAAS polyelectrolytes were performed.The effect of hybrid membranes on the retention of metal Pd were investigated and the extraction performance of palladium-containing solutions with different concentrations under different polyelectrolytes were examined.
[1] Barakat M,El-Mahdy G,Hegazy M,et al.Hydrometallurgical recovery of nano-palladium from spent catalyst[J].Open Mineral Processing Journal,2009,2(1):31-36.
[2] Kumar Jha M,Lee Jaechun,Kim Minseuk,et al.Hydrometallurgical recovery/recycling of platinum by the leaching of spent catalysts:a review[J].Hydrometallurgy,2013,133(11):23-32.
[3] Lu Yan,Xu Zhenming.Precious metals recovery from waste printed circuit boards:a review for current status and perspective[J].Resources Conservation and Recycling,2016,113:28-39.
[4] Mudd G M.Key trends in the resource sustainability of platinum group elements[J].Ore Geology Reviews,2012,46:106-117.
[5] Dong Haigang,Zhao Jiachun,Chen Jialin,et al.Recovery of platinum group metals from spent catalysts:a review[J].International Journal of Mineral Processing,2015,145:108-113.
[6] Stafiej A,Pyrzynska K.Adsorption of heavy metal ions with carbon nanotubes[J].Separation & Purification Technology,2007,58(1):49-52.
[7] Xue Qinghu.Preparation of Pd(Ⅱ)-imprinted polymer and study on its property of separation and enrichment of palladium(Ⅱ)[J].Physical Testing & Chemical Analysis,2009,45(7):783-786.
[8] Liu Zhanxiang,Dong Yang,Liao Jiali,et al.Highly selective extraction of Pd(Ⅱ) with 5-octyloxymethyl-7-bromo-8-quinolinol from acidic solution[J].Journal of Radioanalytical & Nuclear Chemistry,2017,314(5):59-67.
[9] Tanaka S,Harada A,Nishihama S,et al.Selective recovery of platinum group metals from spent automobile catalyst by integrated ion exchange methods[J].Separation Science & Technology,2012,47(9):1369-1373.
[10] Apell J N,Boyer T H.Combined ion exchange treatment for removal of dissolved organic matter and hardness[J].Water Research,2010,44(8):2419-2430.
[11] Costa J A,Queirós Y G C,Mansur C R E.Regeneration of spent polymer resins in oily water treatment systems by application of nanoemulsion[J].Journal of Applied Polymer Science,2015,132(22):1-8.
基金资助
江苏省高校自然科学研究重大项目(16KJA43007);江苏省凹土资源利用重点实验室开放课题(HPK201804)
PDF
