What removes the oxygen from the air
How trees clean the air
ESTEC extracts oxygen using a technique known as molten salt electrolysis, which involves placing regolith in a metal basket with molten calcium chloride salt as an electrolyte and heating it to 950°C. The regolith stays solid at this temperature. As a current is passed through it, the oxygen in the regolith is removed and migrates through the salt to be deposited at an anode. As a bonus, the regolith is converted into functional metal alloys during this process.
In reality, the UK company Metalysis invented this molten salt electrolysis method for commercial metal and alloy manufacturing. Beth’s PhD work included studying the procedure at the business before recreating it at ESTEC. “At Metalysis, the oxygen emitted by the process is an undesirable by-product that is instead released as carbon dioxide and carbon monoxide, meaning the reactors are not built to withstand oxygen gas itself,” Beth explains. “As a result, we had to redesign the ESTEC version in order to be able to calculate oxygen. The lab team was extremely helpful in getting it up and running in a safe manner.”
Ozone generators, which are marketed as air cleaners, emit the gas ozone on purpose. Ozone generator manufacturers often make announcements and distribute materials that lead the public to believe that these machines are always healthy and efficient at reducing indoor air pollution. Health practitioners have been debunking these claims for nearly a century (Sawyer, et. al 1913; Salls, 1927; Boeniger, 1995; American Lung Association, 1997; Al-Ahmady, 1997). This document’s aim is to provide detailed information about the usage of ozone-generating devices in occupied indoor spaces. This information is focused on the most recent and reliable scientific evidence.
Some vendors claim that the federal government has approved these devices for use in occupied spaces. On the contrary, no federal agency has permitted the use of these devices in occupied spaces. Because of these statements, and because high concentrations of ozone can cause health issues, many federal government agencies collaborated with the US Environmental Protection Agency to create this public information document.
Oxygen not included – ep. 3 – cleaning up the air – oxygen
Good evening, everybody. Basically, I want to extract the oxygen from a stream of air as cheaply as possible, preferably using the materials I already have. I think I’ve come up with a concept that could work after doing some research and ruling out costly options like pyrogallol. I’m wondering if you could look it over for me?
A cylinder filled with steel wool and finely powdered calcium chloride, well packed and interspersed within the wool, will be the basic structure. The theory is that the calcium chloride can absorb moisture from the air (a nice side effect) and provide enough moisture and concentrated electrolyte for the iron in the steel wool to oxidize easily. To begin, maybe some especially moist air (such as from breath) could be introduced to get things moving.
I don’t need the air to be completely devoid of oxygen, but it should be as near as possible. Unfortunately, I won’t be able to tell how good it was because I don’t have anything like pyrogallol to measure the oxygen content, so could you tell me if you think this would suffice?
Using the air scrubber without a lot of water – oxygen not
A new electrochemical method for removing oxygen has been developed, in which oxygen-rich water flows through a three-dimensional electrochemical cell’s cathode. The anode extracts dissolved oxygen from the water, while the cathode releases it as a gas into the atmosphere. This technique can achieve oxygen levels of less than 3 mg per kilogram of water (starting level: oxygen-saturated water, 8000 g kg1). This finding is superior to that obtained using physical methods and comparable to that obtained using chemical methods. The electrochemical process has many advantages over traditional methods, including high efficiency, low energy consumption, and the avoidance of harmful deoxygenation chemicals.