Removal of nitrate ions from dilute sulfuric acid
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There is a dilute sulfuric acid solution with a sulfuric acid content of around 50%, and a nitrate ion concentration of 6%. What methods can be used to remove the nitrate ions? Thank you!
Adding urea or introducing SO2 should be able to remove a portion of it; the actual effect requires experimental verification
It can be removed using ion exchange resin
Evaporation concentration can be used to remove nitric acid. This technology is highly mature in China.
For this composition, we usually use an advanced denitration tower for denitration to produce dilute nitric acid at a concentration of around 20%; sulfuric acid can then be concentrated as needed.
What are silicon carbide ceramic membranes used for? I’m interested: lol
Is the concentration sent to the boiler? For the heater, do you prefer tantalum material or silicon carbide heat exchangers? I’d like to know that in the past we provided our customers with tantalum heat exchangers for heating, but later we also offered silicon carbide heat exchangers; the customers have been using them... and we haven’t received any feedback yet