Hi Theodore,
I presume what you are talking about is using it as
a 'sock' - slipping it straight over a wire electrode, rather than winding
it around in a coiling fashion. Give it a go! As with my own arrangement,
dampen the cotton before placing in cell.
regards, Kevin Nolan
----- Original Message -----
From: "Theodore Corbett" <miesenbac...@yahoo.com>
To: <silver-list@eskimo.com>
Sent: Saturday, February 16, 2002 11:18 AM
Subject: Re: CS>'bagged' cathode
> Hi all;
> Just wondering how cotton shoe laces like the ones
> used on tennis shoes would work for electrode bags?
> Theodore
> --- Kevin Nolan <ken...@optusnet.com.au> wrote:
> > Hello all. Another report on trying to eliminate
> > plate-out, inspired by a recent mailing to and from
> > 'Ole Bob'. Some months ago I posted a speculation
> > that wrapping a cathode in eg artificial chamois may
> > dramatically reduce plate-out - because that would
> > greatly reduce the amount of fresh fluid contacting
> > the cathode surface. Since then Bob posted a comment
> > about success using cotton bias tape wrapping - what
> > is called 'bagging the electrode'. I have tried it
> > using fairly thick cotton twill, wrapped twice
> > around a stainless steel plate (40mm X 200mm
> > section) and secured with small rubber bands. For
> > everything else the same, current is reduced about
> > 20% - from ~ 8.5mA to ~ 6.5mA owing to cotton wrap.
> > The big improvement is a dramatic reduction in
> > cathode plate-out, which is now just a thin, fairly
> > adherent film that barely stains the cotton (only at
> > the plate edges). No gunk fall out, no filtering,
> > perfectly clear and sparkly free CS, with moderate
> > levels of both tyndale and metallic taste.
> >
> > NOTE: This is using demineralised water to which
> > citric acid was added, which dramatically boosts
> > conductivity. It means the majority of charge
> > carriers reaching the cathode and reducing there
> > will be H+ ions, not Ag+. Not sure how effective
> > wrapping would be using the traditional LVDC method
> > - ie relying on residual impurities in DW to start
> > things yields nearly all the positive ions in
> > solution as Ag+.
> >
> > regards, Kevin Nolan
> >
>
>
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