I posted the information on this list some years ago with pictures, and
it should still be available in the archives. Basically I use a
magnetic pump I got from Grainger, with a flow meter to adjust the flow
from a 55 gallon barrel of distilled water. This is the aquarium I
use: http://www.ocreef.com/marineland_eclipse_explorer_ii_aquarium_kit
I drilled one hole in the top, and attach the fill tube to it, and
another in the side and connect the drain tube in it. Make sure the
drain tube is high enough for the pump to work, if the water level is
too low it won't prime. I do not use the filter in the pump, and it
runs during operation to "stir" the water in the cell (aquarium).
In the water I have 3 silver plates, 6"X8", the center one twice as
thick as the outside ones. I use nylon stand-offs and nylon screw and
nuts to hold the plates parallel and 1" apart.
I use a timer I got from Grainger to switch polarity every minute, and a
30 volt power supply with a 100 mA constant current circuit to supply
the current. The center plate is attached to one polarity and the two
outside plates to the other. It drains into another 55 gallon drum.
It makes 20 ppm IES at the rate of about 2 gallons an hour, and more if
you are making a lower ppm CS. I use a DVM to monitor the voltage
between the places, it generally runs about 21 volts, and a Hanna meter
to check conductivity.
Marshall
On 10/13/2014 10:53 AM, Top Dog wrote:
Can you elaborate more on how you are able to do that and what
generator you are using to do that with. That's exactly what I am
looking for although I don;t think I need 2 gallons per hour but a
gallon an hour would be perfect.
Thanks,
-Bob
On Mon, Oct 13, 2014 at 10:43 AM, Marshall <[email protected]
<mailto:[email protected]>> wrote:
One can also spike the distilled water with previously made CS to
increase its initial conductivity. Or go from a batch process to
a flow through. For instance my flow through system produces 2
gallons per hour.
Marshall
On 10/13/2014 10:03 AM, Ode Coyote wrote:
The only way to make EIS faster is to use bigger electrodes to
spread the current out....or more voltage, but that tends to
overload the Nernst Diffusion layer resulting in high silver
hydroxide and silver oxide content [ yellow-brown-black CS].
Ode
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