Microprocesor Based VIC/PWM Controller

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I have been told that the "brown mug" can be prevented in a flat plate electrolysis cell by putting a porous membrane between the plates so that the  two gasses cannot combine in the water.  The holes in the membrane are small enough to let water through but not the bubbles.
Something like nylon mesh was suggested.   Of course this would not be practical in a Meyer tube type cell,  but if true might suggest what the brown stuff could be ( a byproduct of oxygen and hygrogen gasses mixing in relatively impure water loaded with all kinds of nasty crap) .   

I have heard quite a few theories as to what it the brown stuff is,   but unless these can be substantiated with a actual chemical analysis of the stuff... they remain only theories to me.   I certainly would not claim to know without a chemical analysis.   



 

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I have been told that the "brown mug" can be prevented in a flat plate electrolysis cell by putting a porous membrane between the plates so that the  two gasses cannot combine in the water.  The holes in the membrane are small enough to let water through but not the bubbles.
Something like nylon mesh was suggested.   Of course this would not be practical in a Meyer tube type cell,  but if true might suggest what the brown stuff could be ( a byproduct of oxygen and hygrogen gasses mixing in relatively impure water loaded with all kinds of nasty crap) .   

I have heard quite a few theories as to what it the brown stuff is,   but unless these can be substantiated with a actual chemical analysis of the stuff... they remain only theories to me.   I certainly would not claim to know without a chemical analysis.   



 

Good post.
I also wanna know this...At the moment its just using waterfilters...

Steve

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http://en.wikipedia.org/wiki/Calcium_nitride
I looked into this a year ago about the calcium formation of oxide.
This is the best thing I could come up with, too match the colors of what we see.

Maybe someone could shed more light but I thinnk this is worthy of a look and a bit of study.

Calcium Nitride is a byproduct of when the oxide forms or makes.

I'm not a chemist its just a guess.
Possibly a helpful one!

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From personal experiance, I think the brown muck as to do with too much voltage between the electrodes, if the voltage is kept under 3 volts, the brown muck does not form, and it also as to do with the amount of bleach tap water has.

I did some tests using tap water, adding koh running a tube at 3 volts 9 AMPS, and no brown muck is formed.

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how's it going on with the mikrocontroller pwm?