Re: CS>Precipitating calcium before distillation

[Marshall Dudley]

You don't have to worry about it, it is left behind when you do the 
distillation.

Marshall
On 1/10/2011 11:33 AM, h.godavari wrote:

I am afraid you do get some of that Sodium remaining in the water. I 
am not sure how to get rid of it altogether. May be there is a chemist 
around who can step in :-)

regards
hg

PT Ferrance wrote:
Thanks, it does help.  One more question.  If one uses this to 
precipitate out the calcium, does one get water that is high in 
sodium chloride?  This would create a whole other problem... and 
perhaps a more serious one for someone trying to control their salt.
Thanks again.
PT

------------------------------------------------------------------------
*From:* h.godavari <h.godav...@shaw.ca>
*To:* silver-list@eskimo.com
*Sent:* Mon, January 10, 2011 10:16:58 AM
*Subject:* Re: CS>Precipitating calcium before distillation

I think it was a typing error - a matter of mind racing ahead of the 
fingers :-) -  Calcium carbonate is insoluble in water  its what 
sea-shells are made of.

Sodium bicarbonate (baking soda) and sodium carbonate (washing soda) 
are both highly soluble in water When you heat baking soda above 70 c 
, it looses on e carbon dioxide (NaHCO3 -> Na2CO3) , ignore 
stoichiometry for now, and it becomes washing soda.

When you add this to water containing Calcium (probably Calcium 
Chloride) they swap parts and the resulting Calcium carbonate 
precipitates  out of solution and you get de-calcified water.

Sodium Carbonate + Calcium Chloride ->Sodium Chloride + Calcium 
Carbonate

hope that helps.

regards
hg

PT Ferrance wrote:
I'm confused.  Daddy Bob said he uses calcium carbonate to 
precipitate out calcium and then said we could make our own by 
baking sodium bicarbonate.  Am I missing something here?
Thanks.
PT

------------------------------------------------------------------------ 

*From:* Frank <frankcuns-r...@comcast.net>
*To:* silver-list@eskimo.com
*Sent:* Mon, January 10, 2011 7:52:13 AM
*Subject:* Re: CS>Precipitating calcium before distillation

Hi sodium bicarbonate “baked” at 350F may become sodium carbonate, 
NOT calcium carbonate.
Cheers

*From:* PT Ferrance <mailto:ptf2...@bellsouth.net>
*Sent:* Sunday, January 09, 2011 11:14 PM
*To:* silver-list@eskimo.com <mailto:silver-list@eskimo.com>
*Subject:* Re: CS>Precipitating calcium before distillation

Hi,
Can anyone tell me why baking 'sodium' bicarbonate at 350 degrees 
for 2-2.5 hours will become 'calcium' carbonate?  How does sodium 
magically become calcium? Thanks.
PT

------------------------------------------------------------------------ 

*From:* "rans...@atmc.net" <rans...@atmc.net>
*To:* silver-list@eskimo.com
*Sent:* Mon, January 3, 2011 12:49:40 PM
*Subject:* CS>Precipitating calcium before distillation

For years I wanted my own water distiller but I knew that my calcium
carbonate loaded water would prematurely destroy one. We have to 
vigorously
clean any pot after boiling water in it and have to religiously 
descale the
coffee maker. I also wanted to build my own larger scale water 
distiller but
the same problem applied- not worth the money and trouble because of 
the
rapid calcium buildup.

I have finally found two methods that will bring this closer to 
reality for
me but have very practical applications already.

I now de-calcify nearly all our drinking water. We do it in the 
common 5
gallon polycarbonate water jugs thusly:

The secret precipitating agent is not at all a secret- it's calcium
carbonate- plain old washing soda. It's still made by Arm & Hammer 
and can
be bought on eBay if you can't find it locally. The dose for my 
water is
about 1/2 teaspoon per gallon. Stir in and dissolve well and watch the
calcium cloud the water then fall to the bottom of the jug. About 24 
hours
later, siphon off with a small tube and through a funnel with 
several coffee
filters. I use my filters over many times.

Concerned about non-food grade calcium carbonate? Make your own. 
Spread some
baking soda out in a pan and bake it at 350F for 2-2.5 hours.

This preemptive process should add much life to any distiller.

The best calcium cleaning solution I ever used in a coffee maker will
probably work fine for distillers too: Standard 5% white vinegar to 
which I
add powdered citric acid until it turns yellow.

DaddyBob


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