Be careful with home electrolytic processes, especially if they'll be in
small, enclosed spaces. It doesn't take much current to dissociate water
molecules so you're liable to get an accumulation of gaseous oxygen and
hydrogen.
---
Scott Gomez
-----Original Message-----
From: T.Clausen@xxxxxxxxxxxx [mailto:T.Clausen@xxxxxxxxxxxx]
Sent: Friday, March 09, 2001 02:38
To: Zuikoholics Anonymous
Subject: [OM] [OT] Fixer...
Hi All,
Not sure, but I thought I'd ask...anyone with experience from electrolytic
filtering of fixer from b/w development?
I am considering building a unit for cleaning the silver remains out of
the used fixer from b/w processing (no, I do not hope to become rich from
silver - I just hope to protect the enviromnent a bit more). I've been
shopping around for information, however there is remarkably little other
than about large, comersial units which cost the same, or more, as a Zuiko
250/2.0 (and then I really prefer the Zuik over the environment *evil
grin*).
Lacking a chemistry degree, it does however appear to me that the most
usefull approach would be an electrolytic process with two electrodes
(stainless steel cathode and carbon or graphite anode) and a fairly low
voltage of 2-4V or so (probably I need to find the reccomended currency
for that process since that's as far as I can tell what counts). The
silver should then be platting on the cathode.
I think I will prototype something this weekend, and then do incremental
upgrades from there until I find some setting that works (and doesn't
smell too much)
However, if anyone on the list have experiences from something like this,
please share. That be both in the "what works and what doesn't" department
and in the "this is safe/unsafe to do" department.
OM-content...uhmm...I dunno. What if I promise to use the OM2n to take
pictures of the setup, and then scan them to show y'all? In any case, it's
at least on the topic of photography and has nothing atall to do with the
history of operating systems.... ;)
--
Mange hilsner / Sincerely
-------------------------------------------
Thomas Heide Clausen
Civilingeniør i Datateknik (cand.polyt)
M.Sc in Computer Engineering
E-Mail: T.Clausen@xxxxxxxxxxxx
WWW: http://www.cs.auc.dk/~voop
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