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#2
21st December 2009, 11:34 PM
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Anyone strong in chemistry? What reactions are going on on the electrodes?
In my limited understanding, on the cathode Na+ gets an electron, turns into metallic Na, which then reduces Fe2O3 to Fe and Na2O. This in turn reacts with water, turns into NaOH + H2. Bubbles. On the anode, CO3-2 gets looses the charge, turns into CO2 and O2, bubbles. Right? I think the solution must turn progressively more alkaline as CO2 escapes. 
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#3
21st December 2009, 11:41 PM
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Powler - you can chuck just about anyhting metal you like in, but I wouldn't reccomend anything with bearings in. I've done drums, brake backplates, calipers, engine pulleys etc etc
Alga - I thought I read somewhere that the reaction gave off Hydrogen
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#4
21st December 2009, 11:46 PM
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This month’s CKC has a good article on the whole electrolysis/chemical de-rusting thing.
Also a picture of a rather striking bloke on page 56 (picture 38, the one on the right)
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#6
22nd December 2009, 12:14 AM
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I would wait for it to turn up; it is a 5 page article with 32 pictures.
 Very good
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