使用含有Cyphos IL 101的聚合物薄膜从废弃电子电气设备（WEEE）中同时回收贵金属和重金属离子

Simultaneous Recovery of Precious and Heavy Metal Ions from Waste Electrical and Electronic Equipment (WEEE) Using Polymer Films Containing Cyphos IL 101.

作者信息

Witt Katarzyna, Urbaniak Włodzimierz, Kaczorowska Małgorzata A, Bożejewicz Daria

机构信息

Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 3 Seminaryjna Street, 85326 Bydgoszcz, Poland.

Faculty of Chemistry, Adam Mickiewicz University in Poznan, 8 Uniwersytetu Poznańskiego Street, 61712 Poznan, Poland.

出版信息

Polymers (Basel). 2021 Apr 30;13(9):1454. doi: 10.3390/polym13091454.

In this article, the application of a polymer film containing the ionic liquid Cyphos IL 101 for the simultaneous recovery of precious and heavy metal ions ((Ni(II), Zn(II), Co(II), Cu(II), Sn(II), Pb(II), Ag(I), Pd(II), and Au(III)) from waste electrical and electronic equipment (WEEE) is described. The experiments were performed for solutions containing metal ions released from computer e-waste due to leaching carried out with concentrated nitric(V) acid and aqua regia. It was found that the applied polymer film allows for the efficient recovery of precious metals (98.9% of gold, 79.3% of silver, and 63.6% of palladium). The recovery of non-ferrous metals (Co, Ni, Cu, Zn, Sn, and Pb) was less efficient (25-40%). Moreover, the results of the performed sorption/desorption processes show that the polymer film with Cyphos IL 101 can be successfully used after regeneration to recover metals ions several times.

本文描述了一种含离子液体Cyphos IL 101的聚合物膜用于从废弃电子电气设备（WEEE）中同时回收贵金属和重金属离子（镍（II）、锌（II）、钴（II）、铜（II）、锡（II）、铅（II）、银（I）、钯（II）和金（III））的应用。实验针对含有因用浓硝酸（V）和王水浸出而从电脑电子垃圾中释放出的金属离子的溶液进行。结果发现，所应用的聚合物膜能够高效回收贵金属（金回收率为98.9%，银为79.3%，钯为63.6%）。有色金属（钴、镍、铜、锌、锡和铅）的回收效率较低（25 - 40%）。此外，所进行的吸附/解吸过程结果表明，含有Cyphos IL 101的聚合物膜再生后可成功用于多次回收金属离子。