Water Technology / Treatment

  • Study: No direct link between fracking, groundwater contamination

    Hydraulic fracturing (fracking) involves the high-pressure injection of water, sand and chemicals into a shale seam, which causes the rock to shatter, releasing natural gas; preliminary findings from a study on the use of hydraulic fracturing in shale gas development suggest no direct link to reports of groundwater contamination

  • Groundwaterin some parts of U.S. susceptible to radium contamination

    A recent U.S. Geological Survey (USGS) study found that groundwater in aquifers on the East Coast and in the Central United States has the highest risk of contamination from radium, a naturally occurring radioactive element and known carcinogen

  • Advances in the use of photocatalysts to help keep water clean safe

    Photocatalysis involves the acceleration of chemical reactions using the power of light; researchers experiment with different types of photocatalysts to reduce nitrates in water

  • Innovative method of water purification

    The UN estimates that about 1.1 billion people currently lack access to safe water; forecasts suggest that freshwater may become the “oil” of the twenty-first century — expensive, scarce, and the cause of geo-political conflicts; scientists show a new method for purifying water

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  • Using bacteria to detect toxins in water

    Biologists and bioengineers at UC San Diego have created a living neon sign composed of millions of bacterial cells that periodically fluoresce in unison like blinking light bulbs; because bacteria are sensitive to many kinds of environmental pollutants and organisms, the scientists believe this approach could be used to design low cost bacterial biosensors capable of detecting an array of heavy metal pollutants and disease-causing organisms

  • Sustaining high-quality groundwater

    Intensive agriculture practices developed during the past century have helped improve food security for many people but have also added to nitrate pollution in surface and ground waters

  • Innovative device removes heavy metals from water

    Engineers at Brown University have developed a system that cleanly and efficiently removes trace heavy metals from water; in experiments, the researchers showed the system reduced cadmium, copper, and nickel concentrations, returning contaminated water to near or below federally acceptable standards; the technique is scalable and has viable commercial applications, especially in the environmental remediation and metal recovery fields

  • Portable wastewater system generates energy, produces drinking water

    Researchers are working to develop a portable wastewater treatment system that could improve the military’s efficiency; the solar-bio-nano project also will generate energy and produce drinking water, thus providing a potential blueprint for the future of municipal/agricultural wastewater treatment systems

  • Ionized plasmas as cheap sterilizer in tough places

    Scientists show that ionized plasmas like those in neon lights and plasma TVs not only can sterilize water, but make it antimicrobial; these plasma devices could be life-savers in developing countries, disaster areas, or on the battlefield where sterile water for medical use is in short supply and expensive to produce

  • Innovative ultrasonic nozzle changes the way water cleans

    Scientists have developed a revolutionary ultrasonic attachment for taps, which massively enhances the ability of water to clean; currently, industry uses excessive water, power, and additives for cleaning

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  • Waste glass cleans up water

    A simple method converts waste glass into a material which can be used to remove pollutants from contaminated water; the method uses colored glass which is being stockpiled in the United Kingdom as there is less recycling demand for green and brown bottles than there is for clear bottles

  • Reducing exposure to groundwater arsenic

    Well diggers in Bangladesh will soon be able to take advantage of a cell phone-based data system, developed at the Earth Institute, to target safe groundwater aquifers for installing new wells that are not tainted with arsenic

  • Virus movement in Wisconsin groundwater

    Drinking water taken from a deep aquifer protected by a semi-permeable layer of rock should be safe because the water is protected from many contaminants, including viruses — but is it safe? University of Wisconsin scientists find virus particles in many deep Madison, Wisconsin water wells, raising questions about how viruses, which should not survive more than two years underground, reached so deep and survive for so long

  • Solar UV disinfects drinking water

    More than 800 million people around the world lack access to clean water; the water available for people to drink in many developing countries has not been treated to remove contaminants, including pathogenic microorganisms; half of the world’s hospital beds are occupied by people who are sickened by the water they drink; Purdue University researchers have invented a water-disinfection system that uses the sun’s ultraviolet radiation to inactivate waterborne pathogens