M. G. Devour wrote: > > On 18 Jul 98 at 22:08, Bill K. wrote: > > > the reversal of polarity might 'unbuild' the black buildup, > > molecule by molecule, while you relax. All I'm suggesting is that > > nobody seems to have investigated, or at least reported, on this. > > It's an interesting idea, Bill, and I think Bruce Stenulson has done > something with it recently. (Bruce, you there?) It's easy to > implement with a 555 timer chip and a small relay. (A couple of > switching transistors could do the job for less, if you were building > a million of 'em.)
I've been working with pulsing the current to minimize certain undesirable effects of the constant current process; I personally have reservations, however, about reversing the polarity... > > > It seems possible that some of the gray silver particles which > > collect on the cathode would be quickly converted to CS, each time > > the cathode switched and became the anode -- thus improving the net > > efficiency of CS production by up to several hundred percent. The assumption here is that agglomerations of silver particles, which have made contact with the negatively charged electrode and consequently gained an electron / been stripped of their positive ionic charge, might revert into very small, positively charged ionic silver particles again.... but will the ideal actually happen? The thought that occurs to me is: It's also possible that all that would result is that *the weak attraction* between the negatively charged electrode and the particles of reduced 'silver sludge', which holds them in place, would be reversed, repelling this residue back into the water in it's charge-stripped state... IF positively charged silver ions, of a very small particle size, are what Becker's work seems to indicate are the most biologically active form of silver for our use, then suspended non-charged particles may not be quite as desirable in our product... Considering that silver chloride and silver carbonate solutions are still being made and used by many, who still seem to report positive effects, we're left with the underlying question, "IS the positively charged ionic silver particle the most desirable to produce *exclusively* in our 'home brew' efforts? > This is a well put statement of the possible advantage. That would be > a great benefit, if it worked that way. > > > Likewise, the black silver oxide on the 'anode' (now cathode) > > might be rapidly converted into CS plus H2O. Thus leaving both > > electrodes relatively 'clean'. The positively charged electrode forms a black (silver oxide?) coating; will changing the charge on the electrode cause the oxygen to un-bond with the silver, or will it instead simply repel smaller silver oxide particles (too fine to easily identify) back into the water? I tend to expect that the latter is the case. Avoiding re-dispersal of accumulated products from the surface of the electrodes seems advisable; once they've gone through a reaction in contact with one of the electrodes, current reversal may *not* provide the desired reversal of that reaction, but instead simply propel them away from those surfaces, to be suspended in the water. This subject, therefore, may need further study. I'm inclined personally to not reverse the polarity at this time. If a methodology is available to analyze the resulting product, this would be interesting to investigate further, but I am unsure what means for testing would actually be required... Bruce -- 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: silver-list-requ...@eskimo.com -or- silver-digest-requ...@eskimo.com with the word subscribe or unsubscribe in the subject: line. To post, address your message to: silver-list@eskimo.com List maintainer: Mike Devour <mdev...@id.net>
