New technology can quickly turn sea water into drinking water

According to the latest research on materials science published in the British "Nature·Sustainable Development" magazine, Monash University in Australia recently announced that its researchers and international colleagues have developed a new type of salt water desalination technology that can use special materials to quickly remove seawater. Salt water is converted into drinking water, and related materials are reused after sunlight exposure.

The process of obtaining fresh water from seawater is called desalination. At present, more than one hundred scientific research institutions in many countries in the world are conducting research on seawater desalination. There are hundreds of seawater desalination facilities of different structures and different capacities in operation. The general seawater desalination methods used include seawater freezing and electrodialysis. , Distillation, reverse osmosis, ammonium carbonate ion exchange and so on.

This time, the researchers added polyspiropyran acrylate to the pores of a metal-organic framework material to obtain a material called "PSP-MIL-53". According to reports, this material can absorb salt and harmful particles in salt water such as sea water within 30 minutes, and make the water quality reach the drinking water safety standards set by the World Health Organization.

Subsequently, as long as it is exposed to sunlight, the material will quickly release particles such as adsorbed salt, which can be reused. Each kilogram of this material can filter out 139.5 liters of drinking water per day, and the energy consumption is much lower than the existing salt water desalination technology.

Research lead researcher Wang Huanting, a professor in the Department of Chemical Engineering at Monash University, said that one of the world's solutions to the crisis of drinking water shortage is to desalinate salt water such as seawater. However, the current commonly used technologies have disadvantages such as high energy consumption and the need to add additional chemical substances. This new type of technology can use sunlight to achieve sustainable salt water desalination, opening up the development of low energy consumption and sustainable salt water desalination technology. A brand new road. (Reporter Zhang Mengran)

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