FAQ: Heavy Water Electrolysis Deuterium Source

If you have a question about this topic, the answer is probably in here!
Andrew Seltzman
Posts: 815
Joined: Sun Feb 01, 2004 8:02 pm
Real name: Andrew Seltzman
Contact:

Re: Heavy Water Electrolysis Deuterium Source

Post by Andrew Seltzman »

Yes, wilmad labglass was the supplier.

Andrew Seltzman
www.rtftechnologies.org
Andrew Seltzman
www.rtftechnologies.org
User avatar
Richard Hull
Moderator
Posts: 14992
Joined: Fri Jun 15, 2001 9:44 am
Real name: Richard Hull

Re: Heavy Water Electrolysis Deuterium Source

Post by Richard Hull »

I assume the ml/min figures are for STP. If it is then 25ml/min STP would be more than enough.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Roberto Ferrari
Posts: 364
Joined: Tue Mar 02, 2004 12:21 pm
Real name: Roberto Ferrari
Location: Argentina
Contact:

Re: Heavy Water Electrolysis Deuterium Source

Post by Roberto Ferrari »

Yes Richard,

you are right, at STP conditions.

Roberto
User avatar
Adam Szendrey
Posts: 1333
Joined: Fri Mar 29, 2002 5:36 pm
Real name: Adam Szendrey
Location: Budapest, Hungary

Re: Heavy Water Electrolysis Deuterium Source

Post by Adam Szendrey »

Hi guys,

I have sent an email a while back to UN, to ask them if they can provide a certificate.
Here is their reply:

"Yes, we can provide certification un request.
We supply Heavy Water to most Universities and they also require purity certification and ACS traceable certificates for their analysis and work.
Certification is available for any of out Reagent chemicals."

I haven't got a reply from Wilmad-Labglass yet.

Adam
Starfire
Posts: 1482
Joined: Wed Oct 24, 2001 2:14 pm
Real name:

Re: Heavy Water Electrolysis Deuterium Source

Post by Starfire »

Aldrich will supply Deuterium Oxide Ultra - D at 99.999 atom % isotopic purity certified ( cat ref 61.340-1 ) -- $120 for 10g

But Richard is correct - Palladium foil is the best drying filter/barrier but it takes a very long time for the D2 to permeate. It works better with a heated foil. Was used in;-

viewtopic.php?f=18&t=7715#p55674
image one.

The pallidium foil is the sealed filter in photo on the left calibrated electrolyliser. This calibrated tube ( 1ml syringe ) allowed gas transfer volume to be measured. The Oxygen side recorded the total O produced and was proportional to the total gas ratio at one bar.
The amount of gas needed for a Fusor is tiny
Attachments
Electrolyliser2x.jpg
Andrew Seltzman
Posts: 815
Joined: Sun Feb 01, 2004 8:02 pm
Real name: Andrew Seltzman
Contact:

Re: Heavy Water Electrolysis Deuterium Source

Post by Andrew Seltzman »

Looks nice. How fast did the D2 penatrate the foil? how thin was the foil?

Andrew Seltzman
www.rtftechnologies.org
Andrew Seltzman
www.rtftechnologies.org
Starfire
Posts: 1482
Joined: Wed Oct 24, 2001 2:14 pm
Real name:

Re: Heavy Water Electrolysis Deuterium Source

Post by Starfire »

sorry for delay Andrew - I only get on at week ends now. Foil was hot rolled down from a 0.1 mm foil to about 0.005 and Indium soldered on to a SS ring washer then sealed in the plastic tube, but it took forever for the D2 to permeate the foil at 1 bar - the D2O had a bit of Sodium added and was electrolyzed at atmosphere. It would be better with the foil hot and the pressure higher - but how? This was a high school project and on a very small budget.

see Richards post -
viewtopic.php?f=6&t=2220#p11730
and followups

also of interest is Franks ;-
viewtopic.php?f=6&t=2440#p11950
User avatar
Richard Hull
Moderator
Posts: 14992
Joined: Fri Jun 15, 2001 9:44 am
Real name: Richard Hull

Re: Heavy Water Electrolysis Deuterium Source

Post by Richard Hull »

I upgraded this superb thread to a "FAQ".

Now a Simple search of "FAQ" in "titles" only within this forum will bring up this prime discussion on heavy water electrolysis.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Post Reply

Return to “FAQs: Fusor Construction & Operation”