Dan Nave wrote: > Marshall, > > Have you ever done a calculation using Faraday's equation on your setup > where you take the total current over time to calculate the total > released silver in your system and compare it to the that necessary > (theoretically) to make the 10 ppm CS, where the difference between the > two would be losses due to plating out of silver, etc in your system? > > If you could do this for reversing vs. non reversing current using the > same setup, it would be very interesting. > > You are doing enough volume so that the differences should be easy to > see.
Yes I have. It is pretty close at 5 ppm, maybe 75-80% efficent at 10 ppm, and drops to about 50% at 20 ppm. Above 20 ppm, increases in the integrated current (charge) have little effect on the ppm, that is it tops out pretty quickly. If I don't reverse then the efficiencies stay close to 100% for higher ppms, but I don't have any solid data on that as I determined that reversing was really necessary pretty early on in the testing. Marshall > > > Dan > > >>> Marshall Dudley <[email protected]> 4/28/2006 10:58:32 AM >>> > You will find a flow through process much more reliable, faster, and > more > consistant. Plus you can easily change the ppm easily by varying the > flow rate > when using constanct current. Using non reversing current, you will > end up > with a significant amount of the silver plating out on the cathode, > and > eventually breaking loose and falling to the bottom. I would reccomend > using a > smaller container, about 1 gallon, flow through processing and a > reversing > constant current source. That is what I use to produce 55 gallons at a > time, at > the rate of about 1..5 gallon per hour per 10 ppm. > > Marshall > > HRBE wrote: > > > I have been doing some experimenting with making bulk CS. > > > > I have come up with the following setup. > > > > 1 x 5 gallon (imperial) fish tank > > 1 x 36 square inches 99.99% silver plate > > 1 x 36 square inches brass plate. > > 1 x aquarium water pump > > 1 x 30volt DC power supply, with adjustable current regulation. > > > > I spaced the plates @ 3 inches, I wrapped the brass plate in paper > towel to > > prevent the gunge from being circulated in the water. I limited the > current > > to 100ma. > > > > By wrapping the brass plate in paper towelling I don't need to wipe > the > > plate clean. > > > > 8 hours later, I have 5 gals of perfectly clear CS solution, which > reads > > 25uS on my Hanna HI98308 TDS meter. > > > > I used current control because I didn't have the time to "babysit" > the > > process > > > > I used Bob Berger's book as a guide for construction and I am > building 45 > > volt dc current regulated power supply to try to shorten the brew > process > > time. > > > > Hope this is of interest to the group > > > > John McLean > > Australia > > > > -- > > The Silver List is a moderated forum for discussing Colloidal > Silver. > > > > Instructions for unsubscribing are posted at: http://silverlist.org > > > > To post, address your message to: [email protected] > > > > Address Off-Topic messages to: [email protected] > > > > The Silver List and Off Topic List archives are currently down... > > > > List maintainer: Mike Devour <[email protected]> > >
