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Conversion therapy?

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Conversion therapy?

Old 23rd Apr 2021, 12:58
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Conversion therapy?

No, not seeking to subvert natural behaviour on behalf of the narrow-minded - this is triggered by President Biden's virtual Climate Change initiative and a hurriedly passed-over news item in yesterday's Beeb News at One.
A 'headline' mention was made of the news that the Mars Lander mission had used a recently established process to convert CO2 to oxygen, sufficient in quantity to sustain a human for ? an hour?. If there was a follow-up expansion, I missed it. Google search indicates that Caltech have developed this technology and the process is viable ... must be, if it can be accomplished remotely, in a distinctly hostile environment.!
Given the Planet's problems with the atmosphere, what are the problems associated with such an, apparently, ground-breaking process?
Anyone up to speed on this, please?
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Old 23rd Apr 2021, 15:42
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https://www.nasa.gov/press-release/n...rom-red-planet





Mars’ atmosphere is 96% carbon dioxide. MOXIE [Mars Oxygen In-Situ Resource Utilization Experiment] works by separating oxygen atoms from carbon dioxide molecules, which are made up of one carbon atom and two oxygen atoms. A waste product, carbon monoxide, is emitted into the Martian atmosphere.

The conversion process requires high levels of heat to reach a temperature of approximately 1,470 degrees Fahrenheit (800 Celsius). To accommodate this, the MOXIE unit is made with heat-tolerant materials. These include 3D-printed nickel alloy parts, which heat and cool the gases flowing through it, and a lightweight aerogel that helps hold in the heat. A thin gold coating on the outside of MOXIE reflects infrared heat, keeping it from radiating outward and potentially damaging other parts of Perseverance.

In this first operation, MOXIE’s oxygen production was quite modest – about 5 grams, equivalent to about 10 minutes worth of breathable oxygen for an astronaut. MOXIE is designed to generate up to 10 grams of oxygen per hour.

This technology demonstration was designed to ensure the instrument survived the launch from Earth, a nearly seven-month journey through deep space, and touchdown with Perseverance on Feb. 18. MOXIE is expected to extract oxygen at least nine more times over the course of a Martian year (nearly two years on Earth).

These oxygen-production runs will come in three phases. The first phase will check out and characterize the instrument’s function, while the second phase will run the instrument in varying atmospheric conditions, such as different times of day and seasons. In the third phase, Hecht said, “we’ll push the envelope” – trying new operating modes, or introducing “new wrinkles, such as a run where we compare operations at three or more different temperatures.”....

https://mars.nasa.gov/mars2020/space...or-scientists/

MOXIE for Scientists



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Old 23rd Apr 2021, 16:34
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Just to digress, slightly, thus far everything associated with this mission is proving to be an unquantifiable testimony to all involved in the design / construction / operation of the mission

Unfortunately, here on Earth, this success is being overshadowed by other rather pressing events
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Old 23rd Apr 2021, 17:16
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Thank you ORAC. The carbon monoxide waste factor wasn't mentioned in the headline. No real advantage, then?
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Old 24th Apr 2021, 12:50
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Is there any technology on earth for capturing carbon and converting carbon dioxide to oxygen.... than just planting trees ?
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Old 24th Apr 2021, 13:02
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It's going to need huge volumes of CO2 from the very thin Martian atmosphere to produce the quantities of O2 needed for human life on Mars and to fuel return trips to Earth. Are we going to bugger up the Martian environment even quicker that the Earth's?

And where is all the energy coming from to heat all that CO2 to 800C? Presumably a solar array. Has anyone done the sums as to the size required?
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Old 24th Apr 2021, 13:29
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Originally Posted by davidjohnson6 View Post
Is there any technology on earth for capturing carbon and converting carbon dioxide to oxygen.... than just planting trees ?
You'll probably find that plankton does even more than trees - mind you we're killing the oceans as well as deforesting the planet, so either way we're
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Old 25th Apr 2021, 03:58
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Originally Posted by Sallyann1234 View Post
...Are we going to bugger up the Martian environment even quicker that the Earth's?
I think the Martian ‘environment’ is pretty buggered already. We could hardly make it worse.
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Old 25th Apr 2021, 06:29
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^ It seems to me it isn't ours to fiddle with, that's the thing that troubles me.
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Old 25th Apr 2021, 08:49
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Originally Posted by Karearea View Post
^ It seems to me it isn't ours to fiddle with, that's the thing that troubles me.
Exactly. It seems that Man cannot go anywhere without destroying what he went to find.

It has already happened here on earth and now we're planning to do the same on other planets too. It won't stop until we have destroyed ourselves - and that doesn't look so far away.

Pass me the Prozac.
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Old 25th Apr 2021, 11:25
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Originally Posted by Sallyann1234 View Post
Exactly. It seems that Man cannot go anywhere without destroying what he went to find.

It has already happened here on earth and now we're planning to do the same on other planets too. It won't stop until we have destroyed ourselves - and that doesn't look so far away.

Pass me the Prozac.
Disagree. Mars missions are about pushing the frontiers of science and knowledge, without which most of us would still be working in fields rather than the sky and would usually lead short, brutal lives.

We’re not ‘destroying’ Mars any more than we damaged the moon.
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Old 25th Apr 2021, 12:16
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We've already left a lot of litter up on the moon

I hear there are now expeditions up Mt Everest organised just to pick up litter (including bags of poo) left by the summit expeditions

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