Ecology

5 innovative water purification methods

Researchers at the Massachusetts Institute of Technology (MIT) are constantly proposing new methods for a myriad of goals, including water treatment and purification. In recent years they have invented very interesting solutions to improve the use of what is the most basic and indispensable resource. water purification methods

One of them, recently published, for example, consists of an electrochemical method that allows to selectively eliminate even the smallest particles of pollution. In this post we are going to review 5 of the most brilliant inventions that MIT has generated in recent years to overcome the problem of water resources, specifically in order to purify water.

Elimination of micro-pollution in water

The application of an electrochemical process , in effect, allows to selectively eliminate chemical pollutants of different types, such as pesticides or residues from drugs.

Compared to traditional electrochemical separation methods, the new method developed at MIT offers a selective alternative to kill even very low levels of unwanted compounds, as explained in the journal Energy and Environmental Science. water purification methods

The simple use of a twig is the proposal of scientists from MIT as a system to purify water and thus kill 99.9 percent of bacteria. The system is as simple as placing a twig and filtering water through it, using the same system as plants to filter the water.

The intention is to help minimize the incidence of waterborne diseases around the world simply by using a pinewood twig, removing the bark and inserting it into the end of a plastic tube that we will finally use to absorb water and so on. filter it out, explains its inventor, Rohit Karnik, a mechanical engineer at MIT. water purification methods

Make salt water drinkable thanks to the sun

This third proposal won the award in the Desal Prize competition, an event organized by USAID that rewards low-cost desalination solutions, feasible for developing countries.

A team of MIT scientists in collaboration with the Jain Irrigation System company has invented a method to make this possible through the use of solar energy. For this, solar panels are used with which batteries are charged that feed a system that removes salt from the water through water purification methods water purification methods at home electrodialysis. A very practical invention that, however, has yet to lower its costs.

MIT scientists David Cohen-Tanugi and Jeffrey C. Grossman propose a nanoporous filter to desalinate seawater. Specifically, they have developed a graphene filter to purify salt water much faster than before.

As explained in Physorg, graphene nanopores can filter salt from water at a much higher rate than reverse osmosis, the best commercial desalination technology available. water purification methods water purification methods at home

Cohen-Tanugi says his system can run “hundreds of times faster than current techniques, at the same pressure” or deliver the same performance at lower pressure. If applied, at least that is the case in theory, it could be desalinated at a lower cost and, therefore, popularize the invention.

Ending the water crisis is the challenge for these scientists, given the measures applied to date depend not only on technology, but also on geopolitical issues, as well as already endemic social inequalities .

In their case, they propose this filter as a giant step towards extending its use to regions that until now could not afford the costs of current desalination technology. Although, on the other hand, it has a great drawback, and it is the need for an adequate treatment of the water used to carry out the process, since it cannot be directly discharged into marine ecosystems. water purification methods water purification system

A washing machine filter allows water to be reused

Chris Lai, Sasha Huang and Alina Rwei were awarded in the MIT “Water Innovation Prize” competition, which seeks new solutions to make better use of the liquid element.

The award went to the creation of the startup “Aqua Fresco”, formed by the three university students in order to develop their invention , a filter capable of reusing 95 percent of the water in the washing machines in the next wash. water purification steps

Aqua Fresco’s objective is to reduce water consumption in the hospitality sector, in laundries or in hospitals, let’s say. “Basically the same batch of water could be used to wash clothes for up to six months,” they conclude. Their creators. water purification methods water purification methods at home water purification system water purification steps

MIT is a private university located in Cambridge, Massachusetts (United States), which includes a faculty and five schools. Its main characteristic is its focus on research and technological innovation from engineering

Founded in 1861, it was created to support the growing industrialization of the country. Without abandoning conventional scientific research, he placed a great emphasis from the beginning on applied technology, usually in close collaboration with industry. water purification methods water purification steps

It is, therefore, a university with a strong business culture, currently very oriented to the new challenges of a society that aspires to be low in carbon and to solve the problem of supplying basic resources for life , such as water. . In fact, at a time as important for humanity as it is today, MIT plays an important role.

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