max absorbing capacity of sorb

paulraymaekers · 20th January 2008, 16:18

hallo, can anyone point me to data that gives the max CO2 absorbtion of different brands of sorb??

meaning

chemically sorb X can absorb Y liters of CO2 / kg until it is saturated for 100%

would do the tests myself, but if data would be available..

regards and thanks

paul

***Beanie*** · 20th January 2008, 16:24

softnolime is on mol prods site

paulraymaekers · 20th January 2008, 16:37

Quote: (Originally Posted by Beanie)

softnolime is on mol prods site

hi Beanie, yes, but I find no data... X liter CO2 / kg sofnolime...

paul

***Beanie*** · 20th January 2008, 17:23

http://www.molecularproducts.com/upl...DS6%20REV1.pdf

paulraymaekers · 20th January 2008, 17:47

Quote: (Originally Posted by Beanie)

http://www.molecularproducts.com/upl...DS6%20REV1.pdf

thanks, I saw this graph before, but what I am looking for is what chemically the max absorption capacity is, meaning for a 100% used sorb

the graph shows it will be more then 160 or 180 l/kg, probably more then 200, but... how much?

paul

jaap · 20th January 2008, 18:37

Quote: (Originally Posted by paulraymaekers)

thanks, I saw this graph before, but what I am looking for is what chemically the max absorption capacity is, meaning for a 100% used sorb

the graph shows it will be more then 160 or 180 l/kg, probably more then 200, but... how much?

paul

Hi

I have no hard data but your question made me do a quick, very rough estimate of a theoretical max capacity.

This is perhaps too simplified but I did the following more or less faulty assumptions:

Only one reaction considered, Ca(OH)2 + CO2 -> CaCO3 + H2O
Mw of Ca(OH)2 : 74 g/mol

I assume that 1 kg of sorb holds about 800 gram of Ca(OH)2 Don't know how good that guess is. There is quite alot of water in the sorb and usually a few percent of strong base.

One mole of Ca(OH)2 removes one mole of CO2
So 800 grams can remove: 800/74 = 10.81 moles of CO2
One mole of an ideal gas has a volume of about 24 liters.

So if all the Ca(OH)2 in the 800 grams reacts it can theoretically remove about 10.81 x 24 = 259 liters of CO2

Take it for what it is, a very quick and dirty estimate.

As a sidenot: One would also get alot of heat and 10.81 moles of water, that is about 195 gram (in the form of vapour, liquid and adsorbed in the sorb).

paulraymaekers · 20th January 2008, 20:50

Quote: (Originally Posted by jaap)

Hi

I have no hard data but your question made me do a quick, very rough estimate of a theoretical max capacity.

This is perhaps too simplified but I did the following more or less faulty assumptions:

Only one reaction considered, Ca(OH)2 + CO2 -> CaCO3 + H2O
Mw of Ca(OH)2 : 74 g/mol

I assume that 1 kg of sorb holds about 800 gram of Ca(OH)2 Don't know how good that guess is. There is quite alot of water in the sorb and usually a few percent of strong base.

One mole of Ca(OH)2 removes one mole of CO2
So 800 grams can remove: 800/74 = 10.81 moles of CO2
One mole of an ideal gas has a volume of about 24 liters.

So if all the Ca(OH)2 in the 800 grams reacts it can theoretically remove about 10.81 x 24 = 259 liters of CO2

Take it for what it is, a very quick and dirty estimate.

As a sidenot: One would also get alot of heat and 10.81 moles of water, that is about 195 gram (in the form of vapour, liquid and adsorbed in the sorb).

thanks!!!
now we should try to test that and see :-)
regards
paul

20th January 2008, 16:18	#1 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,349	max absorbing capacity of sorb hallo, can anyone point me to data that gives the max CO2 absorbtion of different brands of sorb?? meaning chemically sorb X can absorb Y liters of CO2 / kg until it is saturated for 100% would do the tests myself, but if data would be available.. regards and thanks paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
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20th January 2008, 16:24	#2 (permalink)
*Beanie* Cheif tea maker Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,141	Re: max absorbing capacity of sorb softnolime is on mol prods site __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk www.divelife.co.uk
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20th January 2008, 16:37	#3 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,349	Re: max absorbing capacity of sorb Quote: (Originally Posted by Beanie) softnolime is on mol prods site hi Beanie, yes, but I find no data... X liter CO2 / kg sofnolime... paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
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20th January 2008, 17:23	#4 (permalink)
*Beanie* Cheif tea maker Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,141	Re: max absorbing capacity of sorb http://www.molecularproducts.com/upl...DS6%20REV1.pdf __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk www.divelife.co.uk
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20th January 2008, 17:47	#5 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,349	Re: max absorbing capacity of sorb Quote: (Originally Posted by Beanie) http://www.molecularproducts.com/upl...DS6%20REV1.pdf thanks, I saw this graph before, but what I am looking for is what chemically the max absorption capacity is, meaning for a 100% used sorb the graph shows it will be more then 160 or 180 l/kg, probably more then 200, but... how much? paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
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20th January 2008, 18:37	#6 (permalink)
jaap Normal people worry me Current Rebreather/s: Classic Kiss Other CCR RB80 / Clone Ray Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Ray Other SCR Home Build Join Date: Jun 2005 Location: Stockholm Sweden Posts: 438	Re: max absorbing capacity of sorb Quote: (Originally Posted by paulraymaekers) thanks, I saw this graph before, but what I am looking for is what chemically the max absorption capacity is, meaning for a 100% used sorb the graph shows it will be more then 160 or 180 l/kg, probably more then 200, but... how much? paul Hi I have no hard data but your question made me do a quick, very rough estimate of a theoretical max capacity. This is perhaps too simplified but I did the following more or less faulty assumptions: Only one reaction considered, Ca(OH)2 + CO2 -> CaCO3 + H2O Mw of Ca(OH)2 : 74 g/mol I assume that 1 kg of sorb holds about 800 gram of Ca(OH)2 Don't know how good that guess is. There is quite alot of water in the sorb and usually a few percent of strong base. One mole of Ca(OH)2 removes one mole of CO2 So 800 grams can remove: 800/74 = 10.81 moles of CO2 One mole of an ideal gas has a volume of about 24 liters. So if all the Ca(OH)2 in the 800 grams reacts it can theoretically remove about 10.81 x 24 = 259 liters of CO2 Take it for what it is, a very quick and dirty estimate. As a sidenot: One would also get alot of heat and 10.81 moles of water, that is about 195 gram (in the form of vapour, liquid and adsorbed in the sorb). __________________ My initials: JAAP
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20th January 2008, 20:50	#7 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,349	Re: max absorbing capacity of sorb Quote: (Originally Posted by jaap) Hi I have no hard data but your question made me do a quick, very rough estimate of a theoretical max capacity. This is perhaps too simplified but I did the following more or less faulty assumptions: Only one reaction considered, Ca(OH)2 + CO2 -> CaCO3 + H2O Mw of Ca(OH)2 : 74 g/mol I assume that 1 kg of sorb holds about 800 gram of Ca(OH)2 Don't know how good that guess is. There is quite alot of water in the sorb and usually a few percent of strong base. One mole of Ca(OH)2 removes one mole of CO2 So 800 grams can remove: 800/74 = 10.81 moles of CO2 One mole of an ideal gas has a volume of about 24 liters. So if all the Ca(OH)2 in the 800 grams reacts it can theoretically remove about 10.81 x 24 = 259 liters of CO2 Take it for what it is, a very quick and dirty estimate. As a sidenot: One would also get alot of heat and 10.81 moles of water, that is about 195 gram (in the form of vapour, liquid and adsorbed in the sorb). thanks!!! now we should try to test that and see :-) regards paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
(Offline)

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