Nice to have one more constructive participant at this discussion.
Using powder, will expose a larger surface of magnesium for the hydrogen ions from the malic acid to react with. It should also minimize the mangesium oxide (MgO) formed, which prevents more of the magnesium stick from reacting.
Yes, but unless all the mag powder goes in solution I suspect it would be a bit more bitchy to take out of the bottle, place in vinegar to eliminate oxidation, filter, wash and reuse.
Consider in some case you have to do that more than once a day every day....
The rods gets sparkly clean from oxidation with just a couple of seconds immersion in vinegar, I can't see any issue here.
[See reply 1]
THC = Total Hydrocarbons, like Methane, Ethane, Propane, Hexane, etc.
Bummer!
I knew it was looking too good to be true....
The gas permeable membrane has to be water impermeable which a tea bag would not be or contamination will occur.
The carbonation system with hydrogen tank is cool but very expensive to set up compared to mag/malic.
I like better the carbonation (should we say "hydrogenation"?) with hydrogen production on demand via lime/aluminum which I personally consider the best candidate for an alternative mag free hydrogen water.
On regard it seems we know the material for the reaction container has to be preferably plexiglass (which, by the way, is easy to work with) since it would not react and it is very pressure resistant (and not toxic, which is always a bonus).
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The keg couplings shown in the links for the carbonation home made system seems cool and solve the issue of getting the gas in the bottle under pressure, good find!
I would add a bubbler, which is just a tiny bit of pipe forcing the gas under the water surface (as it is done in commercial soda water machines), in order to be able to get away with less shaking afterwards if any.
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A valve is not difficult or expensive at all.
The pressure gauge might be done with a cheap bicycle inflating pump gauge since absolute precision is not needed in this kind of set up...
What would be really cool to know in order to properly size the plexiglass container are the rough amounts of lime, aluminum and water needed to achieve, lets say, 50PSI for a 1l water bottle.
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1. The magnesium powder would be entirely consumed in reaction forming Mg-malate,-citrate,-etc. So long as it's the limiting reactant, there would be excess malic acid. There would be no point trying to clean the powder; I agree, It would be a huge pain. Currently, there is excess magnesium in relation to the malic acid (obviously - huge stick left over). When the malic acid runs out, magnesium hydroxide Mg(OH)2 forms on the stick and needs to be cleaned off for future reactions, which I agree is easy and convenient. Perhaps the rods seems easier to most people because how to calculate the relative amounts of magnesium and malic acid (or other acid) is unknown or too daunting. It's relatively simple and I will spell it out in this thread soon - giving a basic blueprint on how to do it that you could plug values in for different materials and reactions.
2. I agree that the easiest and cheapest method will probably be the DIY Hydrogenation method you mention above and what I described in Section III of my first post. You can use any chemical reaction you want; the chemical reaction is seperate from the water; very cheap, easy, and safe; can fill multiple bottles in one sitting using the keg tap and carbination cap; and best of all, pleases both water drinkers and H2 inhalers (@adamh) at the same time (just hook another valve and hose to it). I think really any container that's easy to acquire, nonreactive/nontoxic, and pressure resistant would work. Most plastic jars or bottles should be fine. The lid would be tougher to find. Best would be a lid with an outlet or tube barbed fitting (drilling and gluing your own in would work too). See the last youtube video in my post above for an idea what someone uses.
- Whoever posted the video seem to have a website that sells H2 water stuff here: http://jisakusuisosui.net/?1466872867 (need to use google to translate)
- In the video on this page, they use an interesting technique similar to 7ppm-Water by Suisosui with a test tube but without a check valve. Seems it takes 24 hours though. http://jisakusuisosu...hp?product_id=1
3. Sure, bubblers would work if you want. I don't know how effective they are in supersaturating gases in liquids, so some experimentation and data with ppm it makes would be real cool. For me, it's hard to imagine how the setup would work, keeping a cap on it while using a bubbler at the same time. Yes, commercial soda machines use bubblers when they make their carbonated water on site.
4. I'll take care of that when I have some free time and will try to make it as simple as I can, as well as use a framework, so different variables such as container size and reactants could be easily plugged in. I'll also calculate the theoretical pressure needed for specific H2 ppm; how many water bottles you could fill up, etc. The math or chemistry isn't very hard. It's basic stoichiometery and 1 or 2 equations. However, I can't promise getting this done very soon.