How to remove chloride ions from copper sulfate solution
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This post was last edited by qin0437 on 2016-10-12 at 11:48. The existing copper sulfate solution contains approximately 250 g/L of pentahydrate copper sulfate, has a pH of around 2.5, and a chloride ion concentration of 500 mg/L. I would like to reduce the chloride ion level to below 100 mg/L. What are some good methods for this? I don’t want to use silver nitrate in this solution, as it would introduce nitrate ions, which could affect the solution, and it would also be quite costly. Is it possible to remove it using resin or a membrane? If so, please let the manufacturer of the resin or membrane know. Thank you very much! !
If chlorination is not carried out, recrystallizing the product once should suffice to meet the standards
Resins used for chlorine removal in electrolytic zinc production should work!
Recrystallization is quite troublesome; a lot of water has to be evaporated, and then the substance has to be dissolved again. . Moreover, only about 60% of copper can be obtained as copper sulfate in the recrystallized product; 40% remains in the mother liquor. The concentration of chloride ions in the water of this mother liquor keeps increasing
I’ve also heard that there are resins for electrolytic zinc production that can remove chlorine, but I’m not sure what kind of resins they are, as it seems that most resins prefer to adsorb sulfate ions over chloride ions.
For zinc electrolysis using a sulfuric acid system, you say sulfate ions are adsorbed first! Wow, that’s amazing. You can probably ask any friend who has worked with electrolytic zinc for information. Our factory sold all the anode and cathode plates used in electrolytic zinc production this year. Do you want me to help you contact the person in charge of the technical aspects?
It would be great to know what the chloride ion level is in your typical zinc electrolysis plants. . It would be best to have the contact information of resin manufacturers. Thank you
Our factory sold all the anode and cathode plates at the beginning of this year, which led to an increase in the price of zinc
A chemical method could involve producing cuprous chloride; try introducing sulfur dioxide. There aren’t many other metal ions that can form precipitates with chloride ions.
We can do it; we are a resin manufacturing company and capable of handling this task. Xi’an Lanxiao – feel free to get in touch if needed. 18091822577