Scientists have built a solar-powered desalination system that does not need expensive batteries and which could produce vast amounts of low-cost drinking water for millions around the world.
The innovative plant, which was designed by MIT researchers, responds quickly to subtle changes in the level of sunlight – such as a passing cloud – to make the most of the available solar energy.
As a result, it requires no extra batteries for energy storage, nor a supplemental power supply, and therefore can produce large amounts of drinking water with exclusively renewable energy.
The MIT engineers behind the project tested a community-scale prototype on groundwater wells in New Mexico in the US over six months.
The system produced up to 5,000 litres of water per day, despite large swings in weather and available sunlight, and used more than 94 per cent of the electrical energy generated from the system's solar panels.
“Conventional desalination technologies require steady power and need battery storage to smooth out a variable power source like solar,” said Amos Winter, a professor of mechanical engineering at MIT. “By continually varying power consumption in synch with the sun, our technology directly and efficiently uses solar power to make water.”
“Being able to make drinking water with renewables, without requiring battery storage, is a massive grand challenge. And we’ve done it.”
Climate change means there is an increasing reliance on desalination around the world. Some estimates suggest that, by 2030, there will be a 40 per cent gap between water supply and demand. The UAE, similar to its Gulf neighbours, has come to depend on desalination, which provides about half of the country's water needs.
Scientists say the technology will be particularly useful in areas far from the coast that only have access to salty, brackish groundwater that is difficult to convert into clean drinking water.
“The majority of the population actually lives far enough from the coast, that seawater desalination could never reach them,” said Jonathan Bessette, MIT PhD student in mechanical engineering. “They consequently rely heavily on groundwater, especially in remote, low-income regions. And unfortunately, this groundwater is becoming more and more saline due to climate change.”
“This technology could bring sustainable, affordable clean water to under-reached places around the world.”
The plant relies on a process known as electrodialysis, which uses an electric field to draw out salt ions as water is pumped through a stack of ion-exchange membranes.
The researchers felt that the process would be more effective than the alternative, known as reverse osmosis, which pumps salty water through a membrane and filters out salts. That method traditionally runs at a steady power level that is incompatible with naturally variable energy sources such as the sun, researchers say.
The team had hoped to use electrodialysis to create a “time-variant” system that would be responsive to variations in renewable, solar power. In their latest work, the researchers looked to eliminate the need for batteries, by shaving response time to a fraction of a second.
The new system is able to update its desalination rate, three to five times per second. This enables the system to adjust to changes in sunlight throughout the day, without having to make up any lag in power with additional power supplies.
“Compared to how you would traditionally design a solar desalination system, we cut our required battery capacity by almost 100 per cent,” Prof Winter said.
The researchers report details of the new system in a paper published in Nature Water. They plan to further test and scale up the system in hopes of supplying larger communities, and even whole municipalities, with low-cost, fully sun-driven drinking water.
“While this is a major step forward, we’re still working diligently to continue developing lower cost, more sustainable desalination methods,” Mr Bessette said.
In numbers: China in Dubai
The number of Chinese people living in Dubai: An estimated 200,000
Number of Chinese people in International City: Almost 50,000
Daily visitors to Dragon Mart in 2018/19: 120,000
Daily visitors to Dragon Mart in 2010: 20,000
Percentage increase in visitors in eight years: 500 per cent
UAE currency: the story behind the money in your pockets
Most match wins on clay
Guillermo Vilas - 659
Manuel Orantes - 501
Thomas Muster - 422
Rafael Nadal - 399 *
Jose Higueras - 378
Eddie Dibbs - 370
Ilie Nastase - 338
Carlos Moya - 337
Ivan Lendl - 329
Andres Gomez - 322
The biog
Name: Younis Al Balooshi
Nationality: Emirati
Education: Doctorate degree in forensic medicine at the University of Bonn
Hobbies: Drawing and reading books about graphic design
Premier Futsal 2017 Finals
Al Wasl Football Club; six teams, five-a-side
Delhi Dragons: Ronaldinho
Bengaluru Royals: Paul Scholes
Mumbai Warriors: Ryan Giggs
Chennai Ginghams: Hernan Crespo
Telugu Tigers: Deco
Kerala Cobras: Michel Salgado
The specs
Engine: 2-litre or 3-litre 4Motion all-wheel-drive Power: 250Nm (2-litre); 340 (3-litre) Torque: 450Nm Transmission: 8-speed automatic Starting price: From Dh212,000 On sale: Now
More from Neighbourhood Watch:
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
David Haye record
Total fights: 32
Wins: 28
Wins by KO: 26
Losses: 4
Yuki Means Happiness
Alison Jean Lester
John Murray
The five types of long-term residential visas
Obed Suhail of ServiceMarket, an online home services marketplace, outlines the five types of long-term residential visas:
Investors:
A 10-year residency visa can be obtained by investors who invest Dh10 million, out of which 60 per cent should not be in real estate. It can be a public investment through a deposit or in a business. Those who invest Dh5 million or more in property are eligible for a five-year residency visa. The invested amount should be completely owned by the investors, not loaned, and retained for at least three years.
Entrepreneurs:
A five-year multiple entry visa is available to entrepreneurs with a previous project worth Dh0.5m or those with the approval of an accredited business incubator in the UAE.
Specialists
Expats with specialised talents, including doctors, specialists, scientists, inventors, and creative individuals working in the field of culture and art are eligible for a 10-year visa, given that they have a valid employment contract in one of these fields in the country.
Outstanding students:
A five-year visa will be granted to outstanding students who have a grade of 95 per cent or higher in a secondary school, or those who graduate with a GPA of 3.75 from a university.
Retirees:
Expats who are at least 55 years old can obtain a five-year retirement visa if they invest Dh2m in property, have savings of Dh1m or more, or have a monthly income of at least Dh20,000.
Scoreline
Syria 1-1 Australia
Syria Al Somah 85'
Australia Kruse 40'
Killing of Qassem Suleimani
Killing of Qassem Suleimani
UAE currency: the story behind the money in your pockets
SPEC%20SHEET
%3Cp%3E%3Cstrong%3EProcessor%3A%3C%2Fstrong%3E%20Apple%20M2%2C%208-core%20CPU%2C%20up%20to%2010-core%20CPU%2C%2016-core%20Neural%20Engine%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EDisplay%3A%3C%2Fstrong%3E%2013.6-inch%20Liquid%20Retina%2C%202560%20x%201664%2C%20224ppi%2C%20500%20nits%2C%20True%20Tone%2C%20wide%20colour%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EMemory%3A%3C%2Fstrong%3E%208%2F16%2F24GB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStorage%3A%3C%2Fstrong%3E%20256%2F512GB%20%2F%201%2F2TB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EI%2FO%3A%3C%2Fstrong%3E%20Thunderbolt%203%20(2)%2C%203.5mm%20audio%2C%20Touch%20ID%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EConnectivity%3A%3C%2Fstrong%3E%20Wi-Fi%206%2C%20Bluetooth%205.0%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EBattery%3A%3C%2Fstrong%3E%2052.6Wh%20lithium-polymer%2C%20up%20to%2018%20hours%2C%20MagSafe%20charging%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ECamera%3A%3C%2Fstrong%3E%201080p%20FaceTime%20HD%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EVideo%3A%3C%2Fstrong%3E%20Support%20for%20Apple%20ProRes%2C%20HDR%20with%20Dolby%20Vision%2C%20HDR10%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EAudio%3A%3C%2Fstrong%3E%204-speaker%20system%2C%20wide%20stereo%2C%20support%20for%20Dolby%20Atmos%2C%20Spatial%20Audio%20and%20dynamic%20head%20tracking%20(with%20AirPods)%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EColours%3A%3C%2Fstrong%3E%20Silver%2C%20space%20grey%2C%20starlight%2C%20midnight%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EIn%20the%20box%3A%3C%2Fstrong%3E%20MacBook%20Air%2C%2030W%20or%2035W%20dual-port%20power%20adapter%2C%20USB-C-to-MagSafe%20cable%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20From%20Dh4%2C999%3C%2Fp%3E%0A
Global state-owned investor ranking by size
|
1.
|
United States
|
|
2.
|
China
|
|
3.
|
UAE
|
|
4.
|
Japan
|
|
5
|
Norway
|
|
6.
|
Canada
|
|
7.
|
Singapore
|
|
8.
|
Australia
|
|
9.
|
Saudi Arabia
|
|
10.
|
South Korea
|
More on Quran memorisation:
The National's picks
4.35pm: Tilal Al Khalediah
5.10pm: Continous
5.45pm: Raging Torrent
6.20pm: West Acre
7pm: Flood Zone
7.40pm: Straight No Chaser
8.15pm: Romantic Warrior
8.50pm: Calandogan
9.30pm: Forever Young
More from Rashmee Roshan Lall
Electoral College Victory
Trump has so far secured 295 Electoral College votes, according to the Associated Press, exceeding the 270 needed to win. Only Nevada and Arizona remain to be called, and both swing states are leaning Republican. Trump swept all five remaining swing states, North Carolina, Georgia, Pennsylvania, Michigan and Wisconsin, sealing his path to victory and giving him a strong mandate.
Popular Vote Tally
The count is ongoing, but Trump currently leads with nearly 51 per cent of the popular vote to Harris’s 47.6 per cent. Trump has over 72.2 million votes, while Harris trails with approximately 67.4 million.
MATCH INFO
Real Madrid 2
Vinicius Junior (71') Mariano (90 2')
Barcelona 0
Red flags
- Promises of high, fixed or 'guaranteed' returns.
- Unregulated structured products or complex investments often used to bypass traditional safeguards.
- Lack of clear information, vague language, no access to audited financials.
- Overseas companies targeting investors in other jurisdictions - this can make legal recovery difficult.
- Hard-selling tactics - creating urgency, offering 'exclusive' deals.
Courtesy: Carol Glynn, founder of Conscious Finance Coaching
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
More coverage from the Future Forum
Tori Amos
Native Invader
Decca
Company%20Profile
%3Cp%3E%3Cstrong%3ECompany%20name%3A%3C%2Fstrong%3E%20Cargoz%3Cbr%3E%3Cstrong%3EDate%20started%3A%3C%2Fstrong%3E%20January%202022%3Cbr%3E%3Cstrong%3EFounders%3A%3C%2Fstrong%3E%20Premlal%20Pullisserry%20and%20Lijo%20Antony%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20Dubai%3Cbr%3E%3Cstrong%3ENumber%20of%20staff%3A%3C%2Fstrong%3E%2030%3Cbr%3E%3Cstrong%3EInvestment%20stage%3A%3C%2Fstrong%3E%20Seed%3C%2Fp%3E%0A
Labour dispute
The insured employee may still file an ILOE claim even if a labour dispute is ongoing post termination, but the insurer may suspend or reject payment, until the courts resolve the dispute, especially if the reason for termination is contested. The outcome of the labour court proceedings can directly affect eligibility.
- Abdullah Ishnaneh, Partner, BSA Law
AI traffic lights to ease congestion at seven points to Sheikh Zayed bin Sultan Street
The seven points are:
Shakhbout bin Sultan Street
Dhafeer Street
Hadbat Al Ghubainah Street (outbound)
Salama bint Butti Street
Al Dhafra Street
Rabdan Street
Umm Yifina Street exit (inbound)
Infiniti QX80 specs
Engine: twin-turbocharged 3.5-liter V6
Power: 450hp
Torque: 700Nm
Price: From Dh450,000, Autograph model from Dh510,000
Available: Now
The details
Heard It in a Past Life
Maggie Rogers
(Capital Records)
3/5
Our family matters legal consultant
Name: Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
COMPANY%20PROFILE%20
%3Cp%3E%3Cstrong%3EName%3A%3C%2Fstrong%3E%20Haltia.ai%0D%3Cbr%3E%3Cstrong%3EStarted%3A%3C%2Fstrong%3E%202023%0D%3Cbr%3E%3Cstrong%3ECo-founders%3A%3C%2Fstrong%3E%20Arto%20Bendiken%20and%20Talal%20Thabet%0D%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20Dubai%2C%20UAE%0D%3Cbr%3E%3Cstrong%3EIndustry%3A%3C%2Fstrong%3E%20AI%0D%3Cbr%3E%3Cstrong%3ENumber%20of%20employees%3A%3C%2Fstrong%3E%2041%0D%3Cbr%3E%3Cstrong%3EFunding%3A%3C%2Fstrong%3E%20About%20%241.7%20million%0D%3Cbr%3E%3Cstrong%3EInvestors%3A%3C%2Fstrong%3E%20Self%2C%20family%20and%20friends%26nbsp%3B%3C%2Fp%3E%0A
Russia's Muslim Heartlands
Dominic Rubin, Oxford
Key findings of Jenkins report
- Founder of the Muslim Brotherhood, Hassan al Banna, "accepted the political utility of violence"
- Views of key Muslim Brotherhood ideologue, Sayyid Qutb, have “consistently been understood” as permitting “the use of extreme violence in the pursuit of the perfect Islamic society” and “never been institutionally disowned” by the movement.
- Muslim Brotherhood at all levels has repeatedly defended Hamas attacks against Israel, including the use of suicide bombers and the killing of civilians.
- Laying out the report in the House of Commons, David Cameron told MPs: "The main findings of the review support the conclusion that membership of, association with, or influence by the Muslim Brotherhood should be considered as a possible indicator of extremism."
UAE currency: the story behind the money in your pockets
What is a black hole?
1. Black holes are objects whose gravity is so strong not even light can escape their pull
2. They can be created when massive stars collapse under their own weight
3. Large black holes can also be formed when smaller ones collide and merge
4. The biggest black holes lurk at the centre of many galaxies, including our own
5. Astronomers believe that when the universe was very young, black holes affected how galaxies formed
england euro squad
Goalkeepers: Dean Henderson (Man Utd), Sam Johnstone (West Brom), Jordan Pickford (Everton)
Defenders: John Stones (Man City), Luke Shaw (Man Utd), Harry Maguire (Man Utd), Trent Alexander-Arnold (Liverpool), Kyle Walker (Man City), Tyrone Mings (Aston Villa), Reece James (Chelsea), Conor Coady (Wolves), Ben Chilwell (Chelsea), Kieran Trippier (Atletico Madrid)
Midfielders: Mason Mount (Chelsea), Declan Rice (West Ham), Jordan Henderson (Liverpool), Jude Bellingham (Borussia Dortmund), Kalvin Phillips (Leeds)
Forwards: Harry Kane (Tottenham), Marcus Rashford (Man Utd), Raheem Sterling (Man City), Dominic Calvert-Lewin (Everton), Phil Foden (Man City), Jack Grealish (Aston Villa), Jadon Sancho (Borussia Dortmund), Bukayo Saka (Arsenal)
