Medcram: Clean Air, Covid, Health. MUST WATCH
This is an amazing presentation covering indoor air quality, getting kids in schools, masks, the 80,000 chemicals in our environment, including the chemicals that will NEVER go away. We need healthier buildings.
I recently did a major 1500 sf add on/ remodel. I installed an ERV. It exhausts stale air and replaces it with conditioned filtered air (Merv 13) ERV’s are good for warm climates HRV’s are good for cold climates. They can be stand alone or fitted to existing duct work. You can leave windows and doors closed and still have tons of fresh air. You keep out mold, pollen and dust. Your house stays much cleaner and healthier.
Agreed well worth watching. Here is a link directly to the youtube video:
and here is a link to how to build your own hepa filter cheaply;
As far as solutions for chemicals in the environment you may find the work of John Warner’s work with “green chemistry”. for example:
Also if you haven’t heard it Ray Anderson’s transformation of Interface carpets. Here is a nice intro to that story
Thanks alphabet 2
I live next to a 150 square mile chunk of “raw native forest” and the dust is AMAZING.
I guess I’ve mostly lived in suburban places, and yes, you might need to cover your file cabinet with a towel to keep the dust off. But nothing like this !
The indigenous dirt is largely de-composed granite, until it gets some biomass mixed in. It has ALL particle sizes. I have a concrete mixing tub filled with dry dirt, with some bark fines mixed in, so that pet birds can get a dust bath during the winter.
When they bathe, it creates a miniature dust cloud that threatens to fill the entire bedroom.
However, I don’t look at it as completely hopeless. My own property is on the edge of a former placer gold mine, and where there is gold there is often Copper.
I was also surprised a few years ago to read an article about Mercury becoming somehow ensconced in dust, and becoming a health threat, in some geographical area. I always thought Mercury was Heavy. That it could become part of a dust “molecule” ?!? Metals in dust ? That could be useful ! !
I had the water tested, I think it was 39 ppm of Copper. Not neurotoxic, just something to be aware of.
The next step, which is turning out to be difficult, is to have the dust tested. It is essentially just a soil component. I have a hunch that this dust may have some copper.
But I am running into a blank/ brick wall. Mining company labs that do assays tell me, I have to submit a hundred samples, they don’t do onesy twosy.
The local water lab & soil lab also declined to test my dust (soil) for copper.
One qualitative test that I did with Dilute Nitric acid, yielded some large clue Copper Nitrate di-Hydrate crystals. These are beautiful blue crystals that contain water. So they are temporary.
They sit on the window-sill looking beautiful for a few weeks, and then one day, all that is left is some blue dust. When the water migrates out of the copper nitrate molecule.
Long story short, I am hoping that the dust that fouls up the air in my neck of the woods, contains enough copper to be a literal source of copper.
In mining, one of the main things you spend energy on is grinding up the input material.
Well, this dust does not need to be ground up.
Anybody know an independent chem lab that would be willing to measure the copper content in my dust ?