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SonoChem wins £150k Aqualunar Challenge for lunar water extraction

Astronauts could extract potable water from lunar regolith with the SonoChem System, a microwave and ultrasound technology that has won the £150,000 Aqualunar Challenge.

This prototype of a lunar regolith processing system has been built using a BBQ wood pellet feeder on the left, a domestic microwave oven in the middle, and an auger on the right, with building sand used as a lunar regolith simulant
This prototype of a lunar regolith processing system has been built using a BBQ wood pellet feeder on the left, a domestic microwave oven in the middle, and an auger on the right, with building sand used as a lunar regolith simulant - Max Alexander/Aqualunar Challenge

The Aqualunar Challenge - a £1.2m international prize funded by the UK Space Agency’s International Bilateral Fund and delivered by Challenge Works - aims to drive the development of technologies that make human habitation on the Moon viable by purifying water beneath the lunar surface.

Naicker Scientific’s SonoChem System was named the winner by the UK Space Agency’s Meganne Christian at a ceremony in Canada House, London, where the team was awarded its cash prize.

In a statement, Christian, said: “NASA has set the goal of establishing a permanent crewed base on the Moon by the end of the decade. The Artemis programme…is supported by the UK Space Agency through its membership of the European Space Agency. Astronauts will need a reliable supply of water for drinking and growing food, as well as oxygen for air and hydrogen for fuel. 5.6 per cent of the soil [regolith] around the Moon’s south pole is estimated to be water frozen as ice. If it can be successfully extracted, separated from the soil and purified, it makes a crewed base viable.”

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