What is the impact of metal ions in brine on ion exchange membranes when the concentration of the brine is too low?
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What is the impact of metal ions in brine on ion exchange membranes when the concentration of the brine is too low?
The saltwater concentration is too low, causing bubbles to form on the ion membrane and leading to delamination of the membrane； When metal ion levels exceed the specified limits, they react with hydroxide ions to form hydroxides, which deposit in the membrane and lead to a decrease in electrical efficiency and an increase in voltage.
Too low a saltwater concentration can also intensify the oxygen evolution reaction, and the resulting oxygen will oxidize the active coating.
Is there any basis for this claim? Is there a source for it?
A low concentration of the anolyte increases the rate of back-diffusion of hydroxide ions, which can be detected through a chlorine purity reaction. As for the oxidatively active coating, I had seen information on it before; I just can’t remember where. http://www.docin.com/p-542194324.html
Too low a concentration causes the eardrum to be blocked by metal ions