Sunday November 17, 2019
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Czech Scientists Find way to Extract Water From Air

The project will be showcased at the Dubai Expo 2020, to be held between October 2020 and April 2021

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Scientists, Water, Air
A team of scientists from the Technical University in Prague have said they found a method of extracting water from air using an autonomous solar-powered system. Pixabay

A team of scientists from the Technical University in Prague have said they found a method of extracting water from air using an autonomous solar-powered system.

The first prototype of Solar Air Water Earth Resource (SAWER) has the capacity to produce 100 litres of drinking water per day anywhere on the planet, even in the desert.

The experts installed SAWER in the United Arab Emirates’ town of Sweihan, located about 70 km east of Abu Dhabi.

“It is not a revolutionary process, but an unusual one,” civil and environmental engineering professor Tomas Matuska told Efe news, adding it used dehumidifiers that are often employed in the food industry.

Matuska explained that the two-stage system consists of a desiccant that holds water molecules in its surface and then an air heater produces water vapour to be taken back to the surface.

A group of 12 scientists started the project in the Czech Republic’s capital in 2017 and created the first prototype that can be transported in two six-meter-long cargo containers.

One of the containers holds the production unit including distilled water equipment, while the second contains the accumulators to boost heat and cold processes, as well as energy control systems.

The experts installed SAWER in the United Arab Emirates’ town of Sweihan, located about 70 km east of Abu Dhabi. Pixabay

Photovoltaic modules are placed on the two containers in order to produce the energy necessary to start the process.

The movable device aims to establish timely living conditions, or to facilitate civil-military operations in inhospitable places requiring an emergency water supply.

“The test (near Abi Dhabi) will last about six months, because we want to have information with data from summer, autumn and winter,” said Matuska, who is part of the team that developed SAWER in Prague.

The device will be tested in the laboratory during this period, although Matuska said it only requires “air filter changes, water canister emptying and cleaning for the photovoltaic modules.”

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The prototype cost about 360,000 euros ($400,000), making the water extracted very expensive – $10 per litre in the first year.

The project will be showcased at the Dubai Expo 2020, to be held between October 2020 and April 2021.

“There is a great interest in our project, from the US to Australia,” Matuska said, adding: “We have signed a confidentiality agreement with a company with businesses in the Persian Gulf area.” (IANS)

Next Story

Once Water-Starved, Chennai’s Cantonment Area Now Boast of 13 Brimful Water Bodies

A senior Indian Defence Estates Service (IDES) officer said that additional storage space for two-crore-litre water was created

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Water, Chennai, Cantonment Area
Water bodies -- 13 in all-- are revived and a water recycling mechanism was put in place. Pixabay

Once water-starved, Chennai’s Cantonment area and military station now boast of 13 brimful water bodies and recycling plants, and also generate their own electricity. Inspired by the innovation, the Ministry of Defence has directed its Estate Wing to implement the development work across all defence establishments.

The ministry has suggested Directorate General, Defence Estates (DGDE), an inter-services organisation of the ministry which directly controls the cantonment administration, to replicate the Chennai Cantonment area development model.

Water bodies — 13 in all– are revived and a water recycling mechanism was put in place at both Cantonment Board St. Thomas Mount cum Pallavaram and Military Station, where there was an acute shortage of water in 2018.

A senior Indian Defence Estates Service (IDES) officer said that additional storage space for two-crore-litre water was created. “Further, because of recycling plant, 2 lakh liters of treated water is used in these areas per day,” the officer said.

Water, Chennai, Cantonment Area
The ministry has suggested Directorate General, Defence Estates (DGDE), an inter-services organisation of the ministry which directly controls the cantonment administration. Pixabay

The board also created a waste management system where door-to-door collection of garbage is being carried out and then segregated into bio degradable and non-biodegradable. It is then treated in a bio-compost pit. Thereafter, biodegradable waste is put in centralised processing wind row system and then manure is created and made available for sale.

The board revived a green zone with around 2,000 plantations, set up solar power plants and a sewage treatment plant.

The solar power infrastructure set up in a year had generated electricity worth Rs 1 crore which is distributed within the cantonment areas.

Interestingly, the board has created a separate dumping zone for plastic bags. The board came up with an innovative idea of retrieval of ration milk and meat poly packets from consumers. It formalised collection and disposal, prevented littering and reaped financial benefits.

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A senior Indian Army officer said the innovative idea was of Lieutenant General S.T. Upasani, who was the General Officer Commanding (GOC) of Dakshin Bharat Area. Lt Gen Upasani recently took charge as Director General of Information System, the crucial post in Indian Army which was lying vacant for the last two months.

Further, the board carried out campaign to revive green zone and planted 2,022 trees with 98 per cent survivability.

This development model is set to be replicated at 61 cantonments areas across the country that had been notified under the Cantonments Act, 1924, which was succeeded by the Cantonments Act, 2006. There are 62 cantonment areas. The overall municipal administration is managed by the cantonment boards, which are democratic bodies.

The ex officio president of the board is the station commander and the Chief Executive Officer, who is also the Member-Secretary of the Board, is an officer of the IDES or Directorate General, Defence Estates (DGDE). (IANS)