Friday, May 20, 2005
This Day:

Centennial Challenges is a NASA program of prize contests to stimulate innovation and competition in solar system exploration and ongoing NASA mission areas. The goal is to offer prize money to encourage private individuals, companies and researchers to think about challenging problems and come up with a state-of-the-art solution. NASA has now announced a new challenge, in association with the Florida Space Research Institute. The MoonROx (Moon Regolith Oxygen) challenge will award $250,000 to the first team that can extract breathable oxygen from simulated lunar soil before the prize expires on June 1, 2008:).

Lunar Base Art (Courtesy: NASA Science)
The teams must design and construct hardware that can extract at least five kilograms of breathable oxygen from simulated lunar soil during an eight-hour period. The soil simulant, called JSC-1, is derived from volcanic ash. The extraction technologies required are currently beyond our reach, and the teams must reach their goal while operating under equipment and energy constraints.
To establish a lunar base, or to use the moon for future human explorations, using lunar resources efficiently is key. Once oxygen can be extracted from its soil, engineers can construct liveable bases, where (genetically engineered) plants could be grown, and humans can thus live and work for extended periods of time, without being dependent on the Earth for everything. Thus, moon can be a stepping stone to future explorations to Mars and beyond, which will undoubtedly be much harder, and more complex.

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7 Comments:

At May 21, 2005 9:28 PM, Blogger Unknown said...
What are the components of the soil, in terms of chemicals? Since the oxides will be stabler than oxygen, the process will have to be endothermic, so it will be more energy draining.

2008! Thats pretty close! Although I know i wont make it there, its still worth exploring with some of my chem friends!
 
At May 21, 2005 10:06 PM, Blogger Sray said...
If you check this site, you will find detailed description and composition of the JSC-1 soil simulant that will be used.

The oxides are mainly SiO2 (47.3%), FeO (10.5%) and CaO (11.4%). Obviously, the easiest one to extract would be the one with the least binding energy (assuming that the ore is easily extracted). Also, it will be nice if solar energy could be used, and the process has to be efficient enough.

Any ideas, anyone?
 
At May 22, 2005 1:16 PM, Blogger Sray said...
I am not sure if anyone will win it. It is a much harder problem actually, than even designing SpaceShipOne. With the ship, one could design models on the computer, and do virtual tests that cut down both costs and time. But with inorganic chemistry, you have to experiment, and that is the only way.

But 2008 is three years away.. so a lot can happen. I am keeping my fingers crossed :D.
 
At May 22, 2005 10:40 PM, Blogger Unknown said...
We will need to treat it with something more electronegative than Oxygen, say F or Cl. And form FeCl2 SiCl2 and stuff (after concentrating it to only the oxides). Then this has to be decomposed at a higher temperature to give back he chlorine and fluorine.

There obviously would be zillion pitfalls in this approach. But, definitely worth p[ondering over. Havent worked out the numbers, catalysts or anything. All my Chem friends are busy right now. Have to hear what other mechanisms they can imagine.
 
At May 23, 2005 2:38 AM, Blogger Sray said...
I agree. But, you have to consider the problem of transporting so much F or Cl (both of which are volatile) to moon! So even though it looks like a good solution, it is not practical. Also, extracting F or Cl on Earth will be quite energy intensive, and also the scientists would need something they can do on moon itself.. they cannot wait for F or Cl shipments from Earth!

One interesting approach would be to use bacteria. On earth, there are anaerobic bacteria that reduce iron compounds. Some of these bacteria reduce Ferryl/Ferric to Ferrous, for example, and release one oxygen atom for every one/two iron atoms.

The trick would be to make this bacteria live on moon... so one might need some genetic engineering to do it.
 
At May 23, 2005 7:05 AM, Blogger Unknown said...
Hmmmm. If it were so simple as i told, they wouldnt have offered a $250K prize for it anyway!
 
At September 16, 2005 3:42 AM, Blogger wise donkey said...
:)
 

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