Ionic air, functioning and health

Discussion of methods of remediation and control air quality.
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Capt_Maloche
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Ionic air, functioning and health




by Capt_Maloche » 17/03/08, 15:55

Hello,

I have been learning about air ionizers and their favorable effects in a home for a while

Negative ions would have the particularity of clinging to particles suspended in the air and thus weighing them down to confine them to the ground.

But ion production equipment also often produces ozone, a notorious irritant

Not to mention that in the dark, on 50 € devices, you can clearly see the light points, which means the presence of a plasma and therefore certainly nitrogen oxides ...

here is what I have on hand:
http://www.psychologue.fr/ioniseur/ioni ... lution.htm

It is imperative that the operating voltage applied to the tips or the carbon braid is less than 4650 Volts (ozone production threshold).


your opinion?
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by elephant » 17/03/08, 15:59

weed .....

part of the problem is that most of the literature is published by people who sell it!
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by Capt_Maloche » 17/03/08, 16:08

yes, but what about ion production - ozone free?
is it only possible?

Anyone know which technology to apply?

Personally, on the last ionizer that I bought, it smells like after a storm, so certainly ozone ...
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by Arthur_64 » 17/03/08, 17:55

I had looked into the matter for my aunt:


Here is what I had sent him (it all started from a discussion on salt lamps):

Modern activity (electrical equipment, air conditioning, confinement) generates positive ions (cations) known to have a certain number of negative effects (fatigue, morale, even more "physical" effects).

Negative ions (anions) have a proven beneficial effect (it is thanks to them that one feels good near a waterfall or after a thunderstorm), but are rare far from nature.

Various concentrations of negative ions depending on the environment (in anions / cm3), approximate figures:

* Forest 3000
* Campaign 800 to 1800
* "In town" 200
* At home 30 to 50
* At office 20

So, as we can see, our homes are deficient in anions.

Regular ventilation helps limit damage. But to significantly improve the quantity of negative ions, it is better to have enough to produce them. Green plants generate a certain number of them thanks to photosynthesis (in fact oxygen ions). However, our electrical devices used daily largely cancel the benefits of this production.

An air ionizer may be a solution. But be careful because the inexpensive models generate ozone!
An air ionizer also has the advantage of placing the dust on the ground (the dust is positively charged).

Furthermore, no study has shown that salt lamps produce negative ions. According to reviews and tests, their effects are zero. Aesthetic interest only therefore.


Come to think of it, I wonder if the solution is not all the same to favor green plants ...
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by Tagor » 17/03/08, 19:42

Capt_Maloche wrote:yes, but what about ion production - ozone free?
is it only possible?

Anyone know which technology to apply?

Personally, on the last ionizer that I bought, it smells like after a storm, so certainly ozone ...


there are many commercially available ionizers
they only produce a HT on a tip

actually if the voltage is too high it produces ozone
very harmful to health

the ions produced tackle the particles in suspension on the ground
so then you have to vacuum

but the danger because there are vacuum cleaners without particle filter
in this case after the vacuum cleaner the situation is much worse than before
because the air breathed is even more polished than before !!!


so you must pass a vacuum cleaner that does not reject micro particles ...
I no longer remember the standard for this type of filter
(but those with asthma are well aware of the problem)

the schematic diagram is extremely simple
can i find it if you want?
Last edited by Tagor the 17 / 03 / 08, 19: 54, 1 edited once.
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by Tagor » 17/03/08, 19:49

Arthur_64 wrote:Here is what I had sent him (it all started from a discussion on salt lamps):


air purification is due to the fact that negative micro particles
are stuck on the ground

I was yesterday at the ECOBAT fair the speaker replied that the salt lamps had no effect on the purification

among other things candles and incense generate many microparticles

but hey sometimes pleasure comes before sanitized health
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by Arthur_64 » 17/03/08, 20:15

... And Armenian paper releases benzene when it burns (but it seems less than other deodorants).

For the salt lamps, this is what I said below:

Furthermore, no study has shown that salt lamps produce negative ions. According to reviews and tests, their effects are zero. Aesthetic interest only therefore.


For the particulate filter, wouldn't that be a HEPA filter ??
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by Tagor » 18/03/08, 07:47

Arthur_64 wrote:For the particulate filter, wouldn't that be a HEPA filter ??


yes we find these vacuum cleaners with hepa filter

it seems to me that the minimum is hepa H10
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by Capt_Maloche » 18/03/08, 11:36

History of filtration regulations: http://www.photocleanquartz.com/societe/historique.php

Image

Bacteria whose size is almost always less than 0,1 [mm] are present in the air at a
numerical concentration which is of the order of 1 / 10000th of the particulate concentration.
F Asbestos is in the form of cylindrical rods 1 to 10 [mm] long and 0,02 to 1 [mm] in diameter.

II.3. CONCENTRATION
It is clear that the number of particles (as well as their nature) varies with the situation
geographic and activity of the place.
Guide values ​​for overall dust concentrations
- Rural area 0,01 mg / m3 to 0,15 mg / m3
- Urban area 0,1 mg / m3 to 0,75 mg / m3
- Industrial zone 0,5 mg / m3 to 3 mg / m3


There are 4 methods selected by AFNOR and EUROVENT, which are distinguished in particular by the aerosol used.
Method Type of aerosol
Gravimetric (ASHRAE) Synthetic
Atmospheric Opacimetric (ASHRAE)
Photometric Solid particles of sodium chloride
Fluorometric Solid particles of uranine
NB:


Image

And more in pdf HERE
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by Capt_Maloche » 18/03/08, 11:39

In theory, a HEPA filter traps 99,97% of dirt, pollens, bacteria and any particle in the air having a size greater than 0,3 micrometer.

The EN 1882 standard of 1995 which defines the test protocol for high and ultra efficiency filters:
particle size mist between 0,1 and 0,2 μm.
Particulate counting is carried out upstream and downstream of the filter and the most particle size is deduced therefrom.
penetrating as well as its minimum efficiency for this particle size.
The EN 1882 standard defines eight filter efficiencies:


Image
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