Using Solar Energy, New Device Created by U.S. Scientists to Remove Impurities from Water

Scientists From Princeton University in the US Created a Device That Filters Water Through the Use of Solar Energy, Making It Drinkable

At Princeton University in the US, a group of scientists created a filter that works through solar energy to make water drinkable. The SAG (Solar Absorbent Gel) is a sponge that absorbs water at room temperature, which when exposed to sunlight, filters the water, retaining contaminants such as lead, oil, and metal. According to the scientists, this method can be used for at least ten cycles.

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Filter Through Solar Energy

The creation by scientists in the US is not only a low-impact solution for the environment and ecology, but also low-cost and solely reliant on solar energy, thus an excellent opportunity in developing countries where drinking water is scarce.

Rodney Priestley, a scientist and corresponding author of the study, said that for him, the most fascinating aspect of this work was being able to operate completely off the grid, on both small and large scales. According to the scientist, the filter can also be used in underdeveloped countries where low-cost energy water purification is needed.

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Contract Signed for Construction of New Solar Power Plants in the State of São Paulo

The mayor Paulo Serra said that the city of Santo André, in the ABC Paulista region, may see the construction of four new solar power plants. The mayor of São Paulo stated that he signed a contract with a company for the design and installation of a photovoltaic solar plant project, signing a contract with Rennove Engenharia e Consultoria Ltda, worth R$ 326,500.

Construction of the 4 New Solar Power Plants

The project integrates plans to improve the maintenance and expansion of the city’s public lighting network. According to the Municipal City Hall of Santo André, in São Paulo, the goal is to implement up to four solar plants with a generation capacity of 1.2 MWh in the city to reduce expenses on inputs in the coming years.

The city hall of the state of São Paulo stated that “Despite being quite widespread in the private sector, through the installation of solar panels on residential and commercial rooftops, the cogeneration of electricity from photovoltaic systems in the public sector is restricted to small isolated projects. The initiative by Santo André City Hall to install municipal plants is unprecedented. Municipalities bear enormous energy costs to maintain the operation of schools, hospitals, public buildings, public lighting systems, among others.”

This is not the only project by Mayor Paulo Serra involving plants. Since the last administration, the potential for enabling PPP (public-private partnership) is quite high, and its projects include the construction of waste incineration plants and the energy they generate. This measure could replace the limited lifespan of urban waste landfills.