Ivan Anderson wrote: > ----- Original Message ----- > From: Marshall Dudley <[email protected]> > To: <[email protected]> > Sent: Thursday, 9 December 1999 03:07 > Subject: Re: CS>RE:Particle size -LV and HV > > > > > I believe that the smaller particles make it far away from the > electrode > > at the high voltage and 1/120 of a second to mostly not get pulled > back > > in. The larger particles don't diffuse very far and likely do get > pulled > > back to the electrode, to get redeposited as silver, for another try > next > > cycle. This is why I believe that the particle size profile on HVAC > tends > > to be for much smaller particles than with the LVDC systems. The > larger > > ones get recycled. > > > > Marshall > > Hi Marshall, > My take on this is that the larger particles found in *some* LVDC > systems come from the accumulation of metallic silver at the cathode > finding its way into the solution. It is my view that the silver > leaves the anode as single ions in all systems, and the process of > aggregation begins after the power is withdrawn. > > Ivan.
That is certainly possible. What would we expect if this were the case then? The concentration near the anode would be quite high, which would cause aggregation until the ions diffused out far enougth to lower the concentration. The diffusion rate should be proportional to voltage, and the density proportional to current. Thus I would expect particle size to be smaller with higher voltages (which is is with HVAC), and larger with higher currents, which others have reported, and I have seen in HVAC systems, but feel is due to the additional temperature rise with higher currents since I can reduce this effect with cooling. I think the jury is out on this, but it is certainly a possibility. Marshall -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
