Originally Posted by kumaran

Hi guys,

I really don't know how could ultrasonic fogger and paint could solve the foam crawling up problem. I didn't experiment on these two methods as you have suggested. It's good to try out new methods to solve problem but before that we must understand the root cause of the problem.

First, why foam develops in the cell? Foam develops when the electrolyte is cold or hot? For example, foam crawling up problem will not happen with newly prepared electrolyte. Why? Because the electrolyte is still fresh and warm. When the electrolyte left it cool off overnight, the next day power on will see foam crawling up problem.

I did some simple experiment with open top series cell design. During conditioning process when the electrolyte stays warms, I tried to add cold distil water. Immediately, I could see the more foams on that particular cell. Then I tried to blow air on top of the cell and same effects observed. So I concluded this is because of cold electrolyte.

How to solve this problem? Use small heater to heat up the electrolyte before turn on power to electrolyser. This should solve the problem.