I suspect that a lot of the O3 will go trough the solution and end in the room, how would you control this? as far as I know, o3 in excess can cause cancer. O3 "home" generators have a control and dont allow for 0.1ppm but I suspect this control should be disabled or it wont cause any effect on the cucl2 solution.
Im no chemist, this was just my 2 cents and really would like to find an effective and safe gas regeneretion method
--- In Homebrew_PCBs@yahoogroups.com, "Darren" <hillio888@...> wrote:
>
> I just joined this group, and haven't read through the messages, but I thought I would throw my .02 cents in on this one.
> As far as regenerating CuCl2 etchant, O3 works about as well as anything I've tried. Small tube style 03 generators aren't hard to make, assuming that one has any technical ability at all. The process goes faster if one uses O2 to feed the generator as opposed to air, but the method still works fine with regular air. A very small amount of HNO3 can be generated if the air used to feed the generator contains moisture, but HNO3 is a great oxidizer, and would only help the process in my opinion.
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