Why are fewer and fewer hydrogen bubbles (H2) formed during production?
Hello Mr. Asenbaum,
I notice that my H2 Booster initially produces a lot of H2 bubbles in the first few minutes and then after about 5 minutes there are a lot fewer bubbles.
I usually choose 2 or 3 times 5min production time.
Is this normal, is it perhaps related to the back pressure that is building up?
The hydrogen actually has to go somewhere, it seems that over time a lot less H2 is produced and the bubbles get bigger and bigger.
Regards
Nicolai F.
Answer from Karl Heinz Asenbaum hydrogen booster | Blistering
Hello Mr. F.,
the dynamics of bubble formation is a science in itself. Basically, you should know that the device always produces the same amount of hydrogen unless the battery has a voltage drop. First, nanobubbles appear on the upper electrode, but they cannot be seen. This then becomes microbubbles that are visible but still dissolve in the water.
The larger bubbles do not dissolve in the water at all, so they are essentially lost hydrogen. Under 1 atm pressure, a maximum of 1,6 mg/l of hydrogen can dissolve. If after 5 minutes about 0,5 mg/l has dissolved, the water becomes "tighter".
However, if the lost hydrogen forms a H2 gas bubble that is as pure as possible above the water, then more hydrogen can be dissolved in the water according to Henry's law. Hydrogen, the smallest of all water gases, displaces all other gases.
So what you see in the first few minutes is not necessarily just hydrogen, but also, for example, outgassing oxygen, nitrogen and carbon dioxide. That's why there are usually more bubbles at the beginning.
The solution of the hydrogen is accelerated by degassing the water beforehand. The easiest way to do this is in a bottle using a vacuum pump, such as the one you use to seal opened wine bottles. Pull 5 to 6 times and shake the bottle to cause the water to visibly outgas. Then the hydrogen can dissolve more quickly because it doesn't have to push out the other gases. The advantage of previously degassed water is that an almost pure hydrogen gas then builds up in the gas pressure bubble, so that more hydrogen can be absorbed into the water according to Henry's law.
This roughly explains the different bubble sizes. There is no specialist book about it yet. The whole matter is still very young and the people who know about it can be counted on 10 fingers worldwide.
