Table 3.
Entry | Purification | Cu content [ppm] |
---|---|---|
Crude mixture from module 2 | n.a. | 4720 |
Extracted org. phase | 1 extraction | 14.3 |
Extracted org. phase | 3 extractions | 6.3 |
[a] Crude mixture from module 2 and NH3 (32 wt %) aqueous solution was pumped by syringe pump and mixed together in a T‐mixer. A Zaiput membrane separator was connected at the end of the 5 mL PFA extraction coil. Organic phase was checked for Cu content by ICP‐OES analysis.