Someone on the Seattle Robotic list said he recharges his FeCl. Here's what he said: ***************** I have not thrown out FeCl in 12 years. I keep recharging the same batch. I apply a voltage to a set of nails in the FeCl. One terminal corrodes away (putting the Fe back), the other terminal plates out copper (ugly mix of Iron and copper so you wouldn't use it for anything else, but it takes the copper out of the solution). I don't know what the voltage is that I use, I suppose it is somewhere between 1 and 5 volts. I use a variable 12V supply and a current meter. About a dozen nails wired together and spread out, I run the voltage up until I have about 4 amps flowing. I leave that on for half a day to charge up a 2 gallon stock. ******************** Anyone else doing this? Steve Greenfield ===== Steve Greenfield // Digital photography, scanning, Polymorph Digital Photography // retouching, and photomorphing 253/318-2473 voice // to your specs. polymorph@... // http://www.polyphoto.com/ // Based in Tacoma, WA, USA __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
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recharging Ferric Chloride?
2003-02-14 by Steve Greenfield