C02 Dangerous for humans?

[Solstice07]

CO2 depletes oxygen. depending on the amount, it might not b a good idea to use CO2 or store CO2 in a living space, especially where u sleep or in a basement. if i'm not mistaken CO2 also sinks.

again, depending on the amount, hoping the plants will use up the available CO2 would also not b a good idea

it's not uncommon in a CO2 environment to cause death -- i do not know the amount to make it lethal

It doesn't deplete it, it displaces it and yes, CO2 is heavier that oxygen so it sinks.

 

[x15]

It doesn't deplete it, it displaces it and yes, CO2 is heavier that oxygen so it sinks.

thanks for catching this

yeah, technically speaking, CO2 displaces oxygen first then depletes remaining oxygen through dilution

when i was a fireman we were not allowed to enter a room where the CO2 system had gone off, we had to first ventilate it well and have our breathers on prior to entering the room

 

[IAm5toned]

carbon dioxide can be toxic to animal life, so raising the concentration to 10,000 ppm (1%) or higher for several hours will eliminate pests such as whiteflies and spider mites in a greenhouse.
http://en.wikipedia.org/wiki/Carbon_dioxide#cite_note-hannan-36

that is actually some good solid info to know... non toxic way to get rid of mites.... veddy veddy intalestink

 

[doc111]

thanks for catching this

yeah, technically speaking, CO2 displaces oxygen first then depletes remaining oxygen through dilution

when i was a fireman we were not allowed to enter a room where the CO2 system had gone off, we had to first ventilate it well and have our breathers on prior to entering the room

You are confusing Carbon Monoxide (CO) with Carbon Dioxide (CO2). I am a retired firefighter and CO2 is not poisonous. It does displace Oxygen which can kill you. Carbon Monoxide is poisonous and will kill you quickly. You are thinking of CO monitors. CO is a product of combustion and can cause harm to humans with concentrations as little as 15 ppm. Carbon dioxide is a product of combustion as well but is also a waste byproduct of respiration of animals.

 

[x15]

You are confusing Carbon Monoxide (CO) with Carbon Dioxide (CO2). I am a retired firefighter and CO2 is not poisonous. It does displace Oxygen which can kill you. Carbon Monoxide is poisonous and will kill you quickly. You are thinking of CO monitors. CO is a product of combustion and can cause harm to humans with concentrations as little as 15 ppm. Carbon dioxide is a product of combustion as well but is also a waste byproduct of respiration of animals.

i never said carbon monoxide nor am i confusing it with CO2 and i never said CO2 is poisonous.

what i said was, "CO2 depletes oxygen. depending on the amount, it might not b a good idea to use CO2 or store CO2 in a living space, especially where u sleep or in a basement. if i'm not mistaken CO2 also sinks.

again, depending on the amount, hoping the plants will use up the available CO2 would also not b a good idea

it's not uncommon in a CO2 environment to cause death -- i do not know the amount to make it lethal"

i would suggest to error on the side of caution because some growers use CO2 with their grows .

peace,

see the reference below --

"The health effects associated with exposure to carbon dioxide are paradoxical. At the minimum design concentration (34 percent) for its use as a total flooding fire suppressant, carbon dioxide is lethal."
reference: http://www.epa.gov/Ozone/snap/fire/co2/co2report.html

"At concentrations greater than 17 percent, such as those encountered during carbon dioxide fire suppressant use, loss of controlled and purposeful activity, unconsciousness, convulsions, coma, and death occur within 1 minute of initial inhalation of carbon dioxide (OSHA 1989, CCOHS 1990, Dalgaard et al. 1972, CATAMA 1953, Lambertsen 1971)."

 

[brokeandwise]

Depends on the size of the room. I'd say if ya were a mouse, and lived in a shoe box, 7 gal bottles @ the right dose wud do ya

I read about a guy who died in a dry ice freezer over night from carbon monoxide poisoning

 

[doc111]

I read about a guy who died in a dry ice freezer over night from carbon monoxide poisoning

Again, dry ice is Carbon dioxide not Carbon Monoxide. Carbon Dioxide causes death by displacing oxygen. CO2 is not poisonous but that doesn't mean it's not dangerous. You can't die from Carbon Monoxide poison in a dry ice freezer because Carbon Monoxide isn't present in concentrations high enough to kill you. What happened was the guy suphocated because the Oxygen in the air was displaced by the Carbon dioxide.

 

[doc111]

thanks for catching this

yeah, technically speaking, CO2 displaces oxygen first then depletes remaining oxygen through dilution

when i was a fireman we were not allowed to enter a room where the CO2 system had gone off, we had to first ventilate it well and have our breathers on prior to entering the room

Sorry. I thought you were talking about CO monitors not CO2 suppression systems. We weren't allowed to overhaul without SCBA until CO concentrations had fallen below 15 ppm. That's what I thought you were talking about. My bad.

 

[doc111]

Here is a little info on CO2 and CO.

http://www.ilpi.com/msds/ref/carbondioxide.html

 

[x15]

Sorry. I thought you were talking about CO monitors not CO2 suppression systems. We weren't allowed to overhaul without SCBA until CO concentrations had fallen below 15 ppm. That's what I thought you were talking about. My bad.

no biggie, doc

sometimes the growers in here concern me when they use CO2 tanks or have wires going all over the place or do things haphazardly etc, don't want anyone getting hurt

 

[doc111]

no biggie, doc

sometimes the growers in here concern me when they use CO2 tanks or have wires going all over the place or do things haphazardly etc, don't want anyone getting hurt

Hey man. Did you get my friendship request?

 

[x15]

Hey man. Did you get my friendship request?

yes, sir

thanx!

 

[woodsmaneh!]

The elevation in CO2 levels in humans is termed as Hypercapnia. Extremely high levels can kill you!

Physical effects on human beings as detailed in the extract given
below:

"With respect to the direct health effects of CO2-enriched air, it is
known that very high concentrations of atmospheric CO2 can produce a
state of hypercapnia (Nahas et al., 1968; Brackett et al., 1969; van
Ypersele de Strihou, 1974) or an excessive amount of CO2 in the blood
that typically results in acidosis (Poyart and Nahas, 1968; Turino et
al., 1974), which is a serious and sometimes fatal condition
characterized in humans by headache, nausea and visual disturbances.
However, several studies have indicated that these phenomena have
little to no negative impact on human health until the CO2
concentration of the air reaches approximately 15,000 ppm (Luft et
al., 1974; Schaefer, 1982), which is 40 times greater than the air's
current CO2 concentration and far higher than any concentration that
could ever be produced by the burning of fossil fuels..."
How Will Future CO2-Enriched Air Affect Human Health?
Volume 5, Number 48: 27 November 2002
http://www.co2science.org/edit/v5_edit/v5n48edit.htm

Sudden increase in CO2 concentration has taken its toll in the
past. While plants flourish with higher CO2 levels, most animals
struggle to breath withextremely high CO2 levels. Rapid elevation of
CO2 levels can be catastrophic (e.g., Lake Nyos) In 1986, volcanic
Lake Nyos erupted huge quantities of CO2, resulting in the deaths of
approximately 1800 people and thousands of livestock upto 25 km away.
High CO2 levels made it difficult for biota that formed
calcareous(CaCO3) shells to make their shells. High CO2in water
isessentially carbonic acid. Silica-shelled life did much better.

Effects on the plant life kingdom. This particular point is
important as it indirectly affects us:

"As shown by Idso and Idso (2001), Loladze (2002), and Jablonski et
al. (2002), there are bound to be certain changes in the chemical
composition of wild and agricultural plants in a CO2-enriched world of
the future; and some of the changes in plant quality, such as a
possible decline in the concentrations of essential elements, could
have negative repercussions for human health (Loladze, 2002). So what
should be done about it? ..."
Researchers Must Pay More Attention to The Role of CO2 in Human
Nutrition and Health
Volume 5, Number 48b: 27 November 2002
http://www.co2science.org/edit/v5_edit/v5n48bedit.htm


Several other points can be drawn from a reading of the excellent
article, "How Will Future CO2-Enriched Air Affect Human Health?" which
I have listed above.

Additional Links and Further Reading:

1) Researchers Must Pay More Attention to The Role of CO2 in Human
Nutrition and Health
Volume 5, Number 48b: 27 November 2002
http://www.co2science.org/edit/v5_edit/v5n48bedit.htm

2) Health Effects of CO2 -- Summary Center for the Study of Carbon
Dioxide and Global Change (http://www.co2science.org).
http://www.co2science.org/subject/h/summaries/healtheffectsco2.htm

3) Van Ypersele de Strihou, C. 1974. Acid-base equilibrium in
chronic hypercapnia. In: Carbon Dioxide and Metabolic Regulations. G.
Nahas and K.E. Schaefer (Eds.). Springer-Verlag, New York, NY, pp.
266.

Search Strategy:

"elevated CO2" effects
"elevated CO2" effects human beings
hypercapnia human health
hypercapnia human begins

Peace