[PSUBS-MAILIST] charcoal filter

[Stephen Fordyce via Personal_Submersibles]

Yes, I think that's a reasonable line of thinking.

Steve

On Sat, Feb 3, 2018 at 11:19 AM, Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Thanks Steve,
> I haven't started my scrubber design, but it shouldn't be too
> far away. I presume the carbon would go in the intake side to
> avoid the moisture that's a bi-product of scrubbing.
> Alan
>
> Sent from my iPad
>
> On 3/02/2018, at 12:59 PM, Stephen Fordyce via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hi guys,
> I can't see any particular issues with adding activated carbon to your
> scrubber (and it's used as the final filtration in most SCUBA compressor
> filters) so long as you avoid dust.  One thing to be mindful of is that
> it's a fuel and shouldn't see high oxygen concentrations.  If you wanted to
> be really fancy, you could also add some "hopcalite"/"monoxycon", which is
> a granular catalyst to convert carbon monoxide into carbon dioxide (also
> used in SCUBA compressor filtration).
>
> Alan, I have Lawrence Factor (high grade breathing-air) activated carbon
> and hopcalite in Australia already if you need some, but I think you would
> find them in NZ.
>
> Cheers,
> Steve Fordyce
>
> On Sat, Feb 3, 2018 at 10:41 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Sorry forgot link, (getting old)
>> https://www.amronintl.com/comex-lung-powered-carbon-dioxide-
>> co2-scrubber.html
>> Alan
>>
>>
>> Sent from my iPad
>>
>> On 3/02/2018, at 11:47 AM, Alan via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Just doing a quick Google I came across this lung powered CO2
>> scrubber that has a carbon filter in it as well. The addition of
>> the carbon filter mustn't restrict the flow too much especially
>> as it's a lung powered device.
>> Alan
>>
>> Sent from my iPad
>>
>> On 3/02/2018, at 10:39 AM, hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Steve,
>> I have proper absorbent coming and will do another life support test with
>> both scrubbers for two people and will test the charcoal affect.
>> Hank
>>
>> On Friday, February 2, 2018, 2:09:40 PM MST, Steve McQueen via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> Yes I have a scrubber from Emile. However, I reduced it's stock height to
>> mount vertically. I am planning on testing the charcoal configuration as
>> part of the scrubber tests. Would be interested in hearing any
>> results/observations you eventually have.
>> Thanks,
>> Steve
>>
>> ---- hank pronk via Personal_Submersibles <personal_submersibles at psubs.o
>> rg> wrote:
>> >  Steve, I agree, I figure with my radial scrubber witch is also my
>> manual backup scrubber.  I would put the charcoal at the bottom, witch
>> makes it contact the air first.  My reasoning is if there is smoke in the
>> sub, it will get cleaned up first ahead of the Soda Sorb.  If I recall you
>> have a scrubber from Emile?  so the same would apply.  Hank
>> >    On Friday, February 2, 2018, 11:37:27 AM MST, Steve McQueen via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> >
>> >  Hank, I was thinking the same.  In my mind as long as the scrubber
>> media in the reduced capacity (80%) is understood and acceptable I can't
>> see any issues with this combined process. Maybe the charcoal should be
>> first?
>> >
>> > Thanks,
>> > Steve
>> >
>> > ---- hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>> > > Hi All,Okay maybe crazy idea.  I want a charcoal  air filter in Gamma
>> and in the interest of keeping it simple.  I though I could fill my
>> scrubber with CO2 absorbent to say 80% then place a screen barrier and
>> finish filling with  activated charcoal.  Thoughts?Hank
>> >
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