[ RadSafe ] krypton-85 Very large activities may be needed to reach saturation levels

[parthasarathy k s]

The process should be effective even when the quanities are large. Since the specific activity of Kr-85 is very high, the quanitiy of Krypton in terms of mass will be very less. So I believe that to reach saturation levels you may need  humongous amounts of  activity!!

K.S.Parthasarathy

----- Original Message ----
From: Otto Raabe <ograabe at ucdavis.edu>
To: "Krzesniak, Michael F" <krzesniak at atd.crane.navy.mil>; radsafe at radlab.nl
Sent: Thursday, 17 August, 2006 9:38:15 PM
Subject: Re: [ RadSafe ] krypton-85

At 04:20 AM 8/16/2006, Krzesniak, Michael F wrote:
>Is it possible to capture krypton-85 gas using activated carbon or other
>filtration methods?
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Small limited quantities of the inert gas radon can be collected with an 
activated charcoal filter by physical adsorption, so I expect the same 
would be true for the inert gas krypton. However, one would expect that 
this process would not be effective for large quantities of krypton. You 
could do some experiments to measure the saturation level. The collected 
krypton can be measured by external measurement of the filter before and 
after heating it to release the adsorbed gases..

Otto


**********************************************
Prof. Otto G. Raabe, Ph.D., CHP
Center for Health & the Environment
University of California
One Shields Avenue
Davis, CA 95616
E-Mail: ograabe at ucdavis.edu
Phone: (530) 752-7754   FAX: (530) 758-6140
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