Articles tagged with Water Desalination
A team of engineers at UCR has created a self-heating carbon nanotube-based membrane that can recover nearly 100% of the water from highly concentrated salt solutions, alleviating water shortages in arid regions. The new system also prevents degradation of the carbon nanotubes in saline environments.
Academics at the University of Sheffield are collaborating with Egyptian partners to develop a system that could provide fresh and safe water to poor and rural communities. The hybrid system uses biogas and solar energy, which offers an alternative source of water production without high energy costs.
Researchers at the University of Manchester have developed graphene-oxide membranes that can filter out common salts from seawater, making it safe to drink. This technology has the potential to revolutionize water filtration worldwide, particularly in countries with limited access to clean water.
A new study by Tel Aviv University researchers suggests that Israel's Jordan River, with only 3% of its original flow, can serve as a case study for tackling water scarcity and pollution worldwide. A two-pronged strategy involving regional cooperation to remove pollution sources and increase water flow is proposed.
Researchers at MIT create a bubble-wrapped, sponge-like device that captures ambient sunlight and concentrates it to heat water to boiling temperatures. The structure achieves 20% conversion efficiency and can be used for desalination, residential heating, wastewater treatment, and medical tool sterilization.
A new Stanford study reveals that managed aquifer recharge (MAR) is an effective and affordable way to balance local groundwater decisions with regional and statewide management. The median cost of MAR projects is $410 per acre-foot, compared to $2,100 for surface water projects.
A new study by UCLA researchers proposes expanding the use of recycled water to reduce water and energy consumption, lower greenhouse gas emissions, and improve public health. The strategy has potential global applications, particularly in addressing water scarcity and related health issues.
Desalination plants can generate renewable hydropower for peak demand periods, improving water security without building new dams. This approach offers cost savings for consumers and government.
A study published in Environmental Science & Technology found that saline groundwater from coastal aquifers is a viable alternative to seawater for reverse osmosis desalination. The research revealed reduced membrane fouling and lower pre-treatment costs, making it a more efficient option.
University of Illinois engineers have developed a device that can desalinate seawater using electricity, potentially providing a more efficient and cost-effective alternative to traditional methods. The technology uses saltwater-filled batteries to draw out salt ions, leaving fresh water behind.
Pressure-retarded osmosis (PRO) technology is not feasible due to biofouling, which clogs membrane structures and feed channels. Researchers found that organic matter and bacteria in wastewater streams result in extreme biofouling development.
Researchers found that radioactive matter migrates more quickly through fractured carbonate rock when it has leaked from a tank near surface waste sites and geological repositories. Intrinsic colloid formation increases the mobility of leaked radioactive materials in the environment.
A new approach to desalination, called shock electrodialysis, uses an electrically driven shockwave to separate salty and fresh water streams, allowing easy separation without filters or boiling. This method can be scaled up for large-scale seawater desalination and may also sterilize contaminated water.
A team of University of Illinois engineers has created a new, energy-efficient material for desalination by exploiting the unique properties of molybdenum disulfide (MoS2) nanopores. The material can filter through up to 70% more water than graphene membranes, making it a promising solution to the global water crisis.
A historian examines how Saudi Arabia's quest for fresh drinking water led to the discovery of oil and highlights the country's precarious relationship between oil and water. The expert argues that the U.S. must consider the environmental impact of desalination, a technology used to produce drinking water.
A new study proposes a novel nanotechnology-based strategy to enhance water diffusion through sanitation filters using phonon oscillations, resulting in three times the efficiency of water transport. Crowdsourced computing played a crucial role in this project, with over 150,000 volunteers contributing their computing power.
Researchers have developed a process to repair leaks in graphene membranes, filling cracks and plugging holes using chemical deposition and polymerization techniques. The team created tiny, uniform pores in the material, allowing only water to pass through, resulting in high flow rates and efficient filtration.
A team of researchers from ORNL has successfully demonstrated an energy-efficient desalination technology using a porous graphene membrane. The new method, which uses a one-atom thick graphene sheet with pores as small as 0.5 nanometers, can purify water at an order of magnitude higher rate than traditional methods.
The new membranes show comparable performance to existing commercial membranes but with greater resistance to chlorine-containing chemicals. This technology can reduce operating costs and prevent decreased water flow due to biological fouling.
Researchers discovered that graphene's naturally occurring defects allow hydrogen protons to cross the barrier at unprecedented speeds, creating water channels. This breakthrough could lead to more efficient separation membranes for desalination and a new design for fuel cells.
Researchers say engineered CNT membranes have potential to tackle water purification challenges, offering purified water with reduced energy consumption. However, hurdles remain, including high production costs and need for uniform pore distribution.
Researchers at the University of Houston are developing new nanofiltration methods to remove salt from brackish waters, a potentially cheaper alternative to existing desalination techniques. The methods could help alleviate drought-stricken regions' water scarcity issues.
Researchers at MIT and Saudi Arabia have developed a method to remove salt from produced water using electrodialysis, which can be economically viable for treating extremely high-salinity water. The technology could reduce the need for fresh water from other sources and minimize contaminated water disposal.
The Deshpande Center has awarded $976,000 in grants to fourteen MIT research teams working on early-stage technologies with potential impact on quality of life. The projects aim to develop innovative solutions for disease monitoring, cancer treatment, water desalination and other areas.
Researchers from McGill and Utrecht University outline six strategies to reduce water stress, including improving irrigation techniques, increasing water-recycling facilities, and limiting population growth. By applying these strategies simultaneously, significant reductions in water-stressed populations are possible by 2050.
The Bureau of Reclamation's Desalination and Water Purification Research Program will provide funding for four laboratory-scale projects and three pilot testing projects. This funding aims to develop new technologies to address desalination needs in river basins throughout the West, ultimately improving US water supply resilience.
Researchers discover that only 20-30% of water vapor molecules condense on a liquid surface, while the majority bounce away. The study's findings could lead to more efficient desalination membranes and fundamental understanding of fluid flow at the nanoscale.
Researchers at MIT developed a new method to create controlled-size holes in graphene sheets, enabling the production of highly selective filters for improved desalination. The graphene filters can sustain higher water flow rates than conventional membranes, making them suitable for efficient desalination and nanofiltration applications.
The MARSOL project aims to address water shortage in the Mediterranean region by storing excess water in aquifers, reducing crop losses and mitigating droughts. Eight field sites across Greece, Portugal, Spain, Malta, Italy, and Israel are being studied for their specific approaches to water storage.
Researchers have created a novel method to desalinate wastewater from oil and gas production, producing up to 90% pure water. The 'ice that burns' technique uses chunks of ice retrieved from deep below the sea to remove salt and other impurities.
A new method for desalinating seawater has been developed by chemists at the University of Texas at Austin and the University of Marburg. The process uses a small electrical field to remove salts from seawater, achieving 25% desalination rates.
A new membrane developed by researchers at Wits University can effectively separate waste from water, making it suitable for treating pollutants in various processes. The technology has the potential to filter pure water from wastewater produced during mining, oil and gas exploration, and nuclear activities.
A new process developed by MIT engineers can produce clean water at relatively low cost, making it a crucial step towards U.S. energy independence and addressing the issue of produced water from natural gas wells. The technology has been patented and is expected to be commercially available within two years.
Researchers at MIT have developed a new surface architecture that significantly improves the performance of condensers, turning steam back into water in powerplants. The design boosts hydrophobic surfaces, allowing droplets to move 10,000 times faster and increasing efficiency.
A UCI-led review reveals creative methods for capturing liquid sewage, highway runoff, and household water to supplement drinking water. The study concludes that transforming individual habits and adopting sustainable practices are crucial to breaking the cycle of waste and over-reliance on freshwater resources.
Researchers at Ben-Gurion University successfully tested a solar-powered desalination system that provides high-quality irrigation water for crops in arid regions. The system uses nanofiltration membranes to treat brackish water, resulting in 25% less irrigation and fertilizer needed compared to traditional practices.
The study reveals that water diffusion is unusually fast in nanochannels above 1nm, while below 1nm, fewer hydrogen bonds need to be broken, enabling macroscopic diffusion. This breakthrough may lead to innovative water desalination and filtration methods.
Researchers at MIT have discovered new ways to pattern collecting surfaces to encourage droplets to form more rapidly, leading to improved efficiency in power plants and desalination systems. The findings also have potential applications in improving the performance of solar-power systems and computer chips.
The Lemelson-MIT InvenTeam initiative inspires a new generation of inventors by engaging students in creative thinking and hands-on learning. This year's projects include a natural disaster emergency relief filtration station and a portable medical support system.
A new paper reviews the state-of-the-art desalination technologies and their potential to improve energy demand reductions. The authors also explore advanced materials and innovative technologies for improving performance and sustainability.
A Yale University study argues that seawater desalination can help combat worldwide fresh water shortages once conservation methods are exhausted. Researchers suggest making pre- and post-treatment stages more efficient for substantial energy and cost savings.
Carbon nanotubes (CNTs) offer a promising solution to the global water crisis by transforming abundant seawater into pure, clean drinking water. CNT-based reverse osmosis membranes can remove salt ions efficiently, reducing costs and energy consumption compared to traditional methods.
Researchers at NC State University have developed a material that can bind and trap radioactive iodide in drinking water, making it safe for human consumption. The material, which combines hemicellulose and chitosan, can also extract heavy metals from water, providing a sustainable solution for desalination.
Researchers found that golf courses in the Canary Islands receive 83% more water than needed, reducing soil fertility and increasing risk of contaminating the aquifer. The study calls for adjusting watering amounts to plant needs and using internationally-accepted evapotranspiration equations.
A new study by the University of Colorado Denver has discovered a way to simultaneously desalinate water, produce hydrogen gas, and treat wastewater. The technology uses microbial electrolysis and desalination cells, which can generate pure hydrogen gas and facilitate desalination with an external power supply.
Researchers are using analytics to identify patterns in the Dutch water system, enabling improvements in overall water management. Advanced algorithms and software will provide real-time insight into the water system, aiding decision-making for water boards and municipalities.
Researchers have observed single ions marching through a tiny carbon nanotube channel, allowing for extremely sensitive detectors or new water-desalination systems. The channels can also study chemical reactions at the single-molecule level.
A new Pacific Institute report identifies key actions for California to conserve a million acre-feet of water through improved efficiency in the urban and agricultural sectors. The analysis finds that upfront investments of less than $1.9 billion can yield significant savings, while also conserving energy and reducing costs.
Researchers from Ben-Gurion University have received a US-AID MERC grant to develop novel techniques for reducing biofouling on Reverse Osmosis membranes. This project aims to increase access to clean water in the Palestinian Authority and Israel.
Researchers at Tel Aviv University have developed an optimal UV wavelength to keep water clean of microorganisms, preventing health threats and reducing bio-fouling. This approach could be used in water treatment plants and desalination facilities to make them more efficient and reduce costs.
The US Department of Homeland Security is developing portable water purification systems to address the global issue of dirty water, which claims over a million lives annually. Several companies are participating in the SECURE program, creating self-contained and self-powered systems that can be used in emergency situations.
Researchers at UCLA have created a novel desalination membrane that resists clogging, allowing for lower energy demands and increased lifespan. The membrane's surface topography and chemistry enable it to repel impurities, making it suitable for various water sources.
Researchers at MIT and Korea have developed a new approach to desalination called ion concentration polarization that can remove contaminants, viruses, and bacteria while producing fresh water. The system is small, portable, and efficient, making it suitable for disaster sites or remote locations.
Researchers at the University of Nevada, Reno have devised a new solar pond distillation system that uses patented membrane distillation and renewable energy to produce freshwater. The system has shown high success in lab experiments and is expected to provide a sustainable solution for terminus lakes around the world.
Sumita B. Mitra's research on dental materials has restored millions of decayed teeth, while William E. Mickols and John Cadotte invented filters to desalinate seawater, providing fresh water for millions worldwide. Their innovations have led to significant breakthroughs in medicine and technology.
Researchers have developed a process that cleans wastewater and generates electricity, also removing 90% of salt from brackish water or seawater. The system uses microbial desalination cells to convert wastewater into clean water producing electricity.
The study reveals that human impacts, such as dams and agriculture, are the main cause of sediment accumulation in Catalan rivers. Global warming also exacerbates the problem by reducing river discharge.
The Dead Sea's water levels are decreasing at an accelerated rate, primarily caused by increased human water consumption from the Jordan and Yarmouk Rivers. The study suggests that desalination of seawater or construction of new channels could help slow down the receding water levels.
Geoscientist David Kreamer proposes recycling decommissioned U.S. Navy vessels into mobile desalinization plants to address global water scarcity. The plan harnesses wind, wave, and solar power to create fresh water, potentially reaching remote areas quickly.
Researchers propose using carbon nanotubes to replace conventional materials in water-purification systems due to their unique chemical properties. The technology could efficiently remove arsenic, fluoride, heavy metals and toxic organic chemicals from contaminated water.