A seawater desalination device that does not require a filter, is portable, and works with solar panels won the competition and won a prize of about 13 million yen.



The Massachusetts Institute of Technology (MIT) has succeeded in reducing the power consumption to one-tenth by reducing the size of a high-pressure pump and seawater desalination equipment that would otherwise require a large amount of power to a portable size. The entrepreneurial spirit competition presented a winning prize of 100,000 dollars (13 million yen).

From seawater to drinking water, with the push of a button | MIT News | Massachusetts Institute of Technology

https://news.mit.edu/2022/portable-desalination-drinking-water-0428

Solar-powered desalination device wins MIT $ 100K competition | MIT News | Massachusetts Institute of Technology
https://news.mit.edu/2022/100k-competition-nona-0516

2021 World Water Day Judges Choice: Creative Communication --Portable Desal. Unit For Hydration --YouTube


The group of MIT's Jongyoon Han and others developed the new seawater desalination system. Conventional large seawater desalination equipment requires a high-pressure pump, and even a portable type requires multiple special filters called reverse osmosis membranes, but the equipment developed by Han et al. Powers electricity. It is used to remove salt and bacteria from seawater, eliminating the need for replacement filters.

The following cases owned by Junghyo Yoon, a member of the team, are the new seawater desalination equipment.



It contains a desalination module, a controller and a pump.



In the desalting module, the Ion Concentration Polarization (ICP) process, which was developed by Han et al. More than 10 years ago, is performed to apply an electric field to the internal membrane, and salt molecules and bacteria contained in water. It will remove viruses and the like. Subsequently, a desalination treatment called

electrodialysis is performed to finish the water as drinking water.



Yoon demonstrated at sea using solar panels, saying that this process can produce drinking water at a rate of 0.3 liters per hour and consumes only 20 Wh per liter. All you need is a solar panel, a portable battery, and a device.



Throw a tube that sucks in seawater ...



Within 30 minutes of starting the process, we succeeded in purifying about half a glass of water.



Yoon immediately drank water and had a satisfying look on his face.



in Hardware,   Science, Posted by log1p_kr