AW: Radionuclides in "Green Sand"-Are there any?

["Franz Schoenhofer" <franz.schoenhofer@CHELLO.AT>]

Dale,



Interesting to hear that you are an "environmental radiation specialist"

searching for information. I do not regard myself as an "environmental

radiation specialist", but I think I could give you some hints and probably

explanations. I have participated and even coordinated some research on the

removal of naturally occurring radioactive material (NORM) in drinking

water.  In order to answer your question quite a lot of information is

needed: What is the radionuclide specific concentration of radionuclides in

the feed water? What is it for the purified water? What is the radionuclide

concentration in the original green sand? What is it in the green sand after

filtration? Etc. etc. With other words: A lot of input parameters are

needed. I have a lot of experience just regarding "green sand" and water

purification. But:



Your inquiry seems to be to me a little queer. Obviously you work for a

company and this company earns money for an expertise. Now you want the

RADSAFE community to solve your problem. This means that you want us to work

for you free of charge.



I will not work free of charge, though I am convinced that I could easily

solve the problem you put forward, nor do I think that most of other

RADSAFErs do it. If you want an expertise, please forward a financial offer

to RADSAFE.



Best regards,



Franz







-----Ursprüngliche Nachricht-----

Von: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]Im Auftrag von Dale Dusenbury

Gesendet: Donnerstag, 03. Juni 2004 23:09

An: radsafe@list.vanderbilt.edu

Cc: alan.hardy@ncmail.net; Dale Dusenbury

Betreff: Radionuclides in "Green Sand"-Are there any?





My name is Dale Dusenbury and I am an environmental radiation specialist

with the North Carolina Radiation Protection Section. Does anyone have

any information on the presence of  radionuclides( particularly natural

ones),  found in "green sand", a filtering media used in water

purification plants? This is the definition I found on the web for green

sand:"/Greensand is a mineral mined from natural deposits of glauconite.

These deposits are composed primarily of iron-potassium silicate. ... A

great source of potassium and other trace elements."  /Is this natural

greensand used primarily or is there a synthetic substitute for water

purification purposes?

There is a question at a ground water supply in our area due to levels

of natural nuclides in water that appear to increase following treatment

by "green sand". If such nuclides are present in this material, what ph

or other conditions(water hardness from manganese or iron from example)

could move these nuclides into solution where they could enter the

treated water? Radsafers are welcome to reply to the list or to my

e-mail if you like.

Dale Dusenbury, CHP, MSPH

NC Radiation Protection Section

3825 Barrett Drive

Raleigh, NC 27609-7221

e-mail:dale.dusenbury@ncmail.net







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