Let us explore how we can produce oxygen

Please let us aggregate methods of producing oxygen in this thread.

@Darshana @jtd @Anool

We would like to explore both chemical and oxygen concentrators using zeolites here.

The chemical method followed by Prof Srinivas Hota demonstrated a simple chemical route to produce > 98% produce oxygen by adding two easily available chemicals Sodium percarbonate and KMnO4 . However the reaction is highly exothermic and they need help to solve some design issues. They made progress in the last two days by deploying coils and pouring sodium percarbonate and titrating it with KMnO4. Please add more info @Darshana

Please post links and information asap.

this is the link about IISER Bhopal team

Oxykit is a DIY open source initiative

Some methods documneted here

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https://metastudio.org/t/medical-oxygen-single-patient-kit-project/11590

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another one

Link to today’s call recording of the MakerAsylum folks discussing several issues. They are going ahead with the oxykit

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Find a Zeolite for Medical Oxygen Concentration

For testing the produced oxygen concentration, one method is to use Oxygen Analyser /Sensor Device, In India I found the following links where they are available.

  1. https://medicalbulkbuy.com/product/oxygen-analyzer/

  2. https://eassycart.com/automobiles/measure-and-testing/others/buy-smart-sensor-oxygen-meter-digital-portable-automotive-o2-gas-tester-monitor-detector-handheld-oxygen-meter/?gclid=CjwKCAjw7J6EBhBDEiwA5UUM2oHnbHFREhqY7c2CjrmD_Pz8Nk1127to-EFuKN0Ha_IsWtZYHFYnChoCOfEQAvD_BwE

  3. https://www.industrybuying.com/gas-analyzers-kusam-meco-ME.IN.GA.160442/

If you know other sources please add them.

https://preserve.lib.lehigh.edu/islandora/object/preserve%3Abp-10368391

This is a research paper on efficiencies of physically separating gases of different densities, using turbulence at relatively low rotational speeds. Simple density separators need very high rotation, calling for extremely expensive bearings and motors, that usually need to be special made to order.

The gases described in the paper are methane and carbon dioxide, 0.000554 and 0.001836 g/cm³ at stp. Detailed schematics of the mesh employed to deliver better separation, resulting in high purity, are described and drawn, together with the test results.

As it happens, atmospheric gases, principally oxygen and nitrogen, are much farther apart in density, at 1.429 and 0.0012506 g/cm³ at stp respectively. The principal trace compound is carbon dioxide, whose density is much closer to nitrogen than oxygen, and which can therefore be expected to be found in much higher concentrations in the nitrogen ‘waste’ fraction than the desired high purity oxygen, after separation.

An added advantage to separating oxygen from the atmosphere is that (apart from the handy source) nitrogen exhausted or vented from the separator is mostly harmless. This compares favorably with electrolysis of water, which is relatively simple to fabricate from everyday hardware found in workshops, but needs very high maintenance to minimise the risk of explosive fires.

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Flare it at source . One might feed the water so generated back into the electrolysis chamber.

I used the carbon electrode from exhausted dry cells - 4 of which were used in the venerable transistor radio we had at home and had an interminable supply of from the neighbourhood.
They are very hardy and would not deteriorate at all.

Although not very efficient it is super easy. 1 Li of water when completely electrolysed will produce 660Li of O_2 and consume 3.67Kwh - this sucked out from the web.
One will have to add NaHCO_3 to get water to conduct for elctrolysis .

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https://hackaday.io/project/178334/files

An oxygen sensing system, part of the oxifit ecosystem

DIY Oxygen Concentrator | OIST Groups

The stripped down version of the Oxygen concentrator experiment

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