Re: [PSUBS-MAILIST] Methane scrubber

[Warren Greenway <opensourcesub@yahoo.com>]

Activated charcoal is a good idea for a secondary
scrubber. It will remove many bio-based nasties,
which should include hydrocarbons.

Warren.

--- Ian Roxborough <irox@ix.netcom.com> wrote:
> 
> Some sort of activated-charcoal type filter would
> probably
> do the trick:
> 
>
http://www.luftfilterbau.de/English/E-Aktiv/aktivk1.htm
> 
> It also mentions adsorping "diesel oil fog" and
> gasoline
> pollutants from the air, in it's not very scientic
> looking
> "effectiveness table".  This might be something to
> consider
> if you have a diesel or gas engine onboard.  I've
> heard
> that spending time with a (running) diesel engine in
> a
> small space isn't much fun smell wise.
> 
> Ian.
> 
> 
> 
> 
> On Thu, 11 Sep 2003 12:17:52 +0700 (GMT+07:00)
> peter  mckellar <mckellar@earthlink.net> wrote:
> 
> > Hi Warren,
> > 
> > thanks for the reply.  I'm just researching
> submarine life support requirements at present.  I
> had thought one of the list members had mentioned
> this as areq for their sub (multiday missions).
> > 
> > In my research i have been hitting NASA sites
> pretty heavily - especially those related to long
> mission closed system life support (eg the mars
> mission), and it was certainly an issue for them 
> Flatulence may not be a problem (unless i had a lot
> of vegetarian passengers hahah), and this is one
> place i am seeking advice.  is it an issue, or at
> what mission length does it need to be factored in.
> > 
> > I am also interested in methane removal on another
> unrelated project and i thought this group may have
> some expertise.
> > 
> > thx in advance
> > peter
> > 
> > -----Original Message-----
> > From: Warren Greenway <opensourcesub@yahoo.com>
> > Sent: Sep 10, 2003 10:57 AM
> > To: personal_submersibles@psubs.org
> > Subject: Re: [PSUBS-MAILIST] Methane scrubber
> > 
> > Methane? The scrubber technology I have played
> with
> > won't remove methane. Carbon Monoxide and Carbon
> > Dioxide. Why are you concerned about methane? :)
> > 
> > Warren.
> > 
> > --- peter  mckellar <mckellar@earthlink.net>
> wrote:
> > > Hi all,
> > > 
> > > I have only seen discussion on this group for
> > > CO2/Methane scrubbers, with no real specifics.
> > > 
> > > I've been assuming that the CO2 scrubber also
> > > intrinsicly scrubs methane (indisciminately), is
> > > this the case or are they two different
> specialised
> > > scrubbers?
> > > 
> > > Is it possible to easily separate the methane
> from
> > > the CO2?
> > > 
> > > Also, I have read of a lithium hydroxide (?)
> > > scrubber that is a reversible process, allowing
> the
> > > compound to be 'cleaned' and reused.  Does
> anyone
> > > have any experience with this and able to
> comment on
> > > its effectiveness?
> > > 
> > > thx
> > > peter
> > 
> > 
> > __________________________________
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