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A review of the effects of installing air filters in classrooms

(statmodeling.stat.columbia.edu)
90 points thatcat | 1 comments | 09 Jan 20 22:30 UTC | HN request time: 0.001s | source
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feistypharit ◴[10 Jan 20 03:30 UTC] No.22008103[source]▶
I can't figure out what kind of common air filter would filter out natural gas?! Am I won't out would they have never worked for their intended purpose?
replies(2): >>22008114 #>>22008256 #
1. kortex ◴[10 Jan 20 04:14 UTC] No.22008256[source]▶
You are correct. The best you can do would be an activated carbon filter, which some better filters have. However, if I am reading/interpreting the graphs correctly, this is talking about over four miles from the leak. You'd be in the 2-5 ppm range (based on surveys) or less for NG (ethane and methane). so, maybe some reduction, but I doubt it would have a physiological effect.

That may be still in the range for mercaptan tracer gas olfaction, in which case carbon would decrease the smell, but that's about it.