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Activated carbon cloth could find its way into a variety of filtration applications

Researchers have discovered that activated carbon cloth is very effective at filtering harmful compounds out of air and liquids. The material was first developed in the 1980s, to protect British soldiers from chemical attacks. It is still in use today, in chemical, biological and radiological warfare suits for the military. This recent study, however, indicates that it could have a number of other uses.  Read More

The filter being treated with silver and CNTs (B,C), and SEM images of the cotton, silver ...

Yi Cui, an Assistant Professor of Material Science and Engineering at Stanford University, has invented quite the water filter. It’s inexpensive, is very resistant to clogging, and uses much less electricity than systems that require the water to be pumped through them. It also kills bacteria, as opposed to just trapping them, which is all that many existing systems do.  Read More

The 'tea bag' in place near the mouth of the special water bottle

Stellenbosch University's Hope Project has produced a disposable water filter shaped like a tea bag. When placed in the neck of a water bottle, the bag removes all harmful chemicals and microbes. Each bag cleans one liter (1.06 quarts) of water, so a lot will be needed to make any significant impact on water-related health issues globally. However, when compared to competition such as the LifeStraw or LifeSaver, it would seem to be a cost effective solution. The product is currently being tested by the South Africa Bureau of Standards.  Read More

The Emergency Bra as a facemask

Sexy red lingerie and heavy breathing have traditionally gone hand in hand. But a bra from inventor, Dr. Elena Bodnar, is designed to let people breathe easier. Her Emergency Bra is a protective device that transforms from a bra into two respiratory pace masks to filter out harmful airborne particles, such as those released by fire, explosion, terrorist, radiological, biological attack, and natural disasters.  Read More

SEM image of the silver nanowires in which the cotton is dipped during the process of cons...

As their name suggests, most existing water purifying filters clean the water by physically trapping or filtering out bacteria. Stanford researchers have now developed a new kind of water purifying filter that isn’t really a filter at all. Instead of trapping bacteria, the new filter actually lets them pass right through. But, by the time they emerge from the filter they have been killed by an electrical field running through it. Not only is the new filter more than 80,000 times faster than existing filters, it is also low-cost, has no moving parts and uses very little power, which should make it particularly attractive for use in the developing world where it is needed most.  Read More

EyeTV can now filter out much of the annoying droning on World Cup broadcasts thanks to a ...

With FIFA President, Sepp Blatter, defending the rights of South African fans to blow their horns at World Cup matches, TV viewers have turned to technology to tone down the incessant buzzing that accompanies the on field action of World Cup TV coverage. In what is sure to be music to the ears of many of the users of Elgato’s EyeTV software, the company has announced a free update that features a Vuvuzela Filter.  Read More

A fan plays the 'instrument' that has become the sound of the 2010 World Cup - the vuvuzel...

Riddle me this. What sounds like an elephant when all alone, but sounds like a swarm of bees when numbers grow? The answer, as any World Cup aficionado will tell you, is the vuvuzela. A meter long plastic horn that has become synonymous with the 2011 World Cup in South Africa and has had many fans reaching for the mute button on their TV remote controls. The BBC has received so many complaints it is looking at ways to minimize the noise of the so-called instrument. Now researchers at the Centre for Digital Music (C4DM) at Queen Mary, University of London have come up with a "devuvuzelator" that filters out the droning sounds of vuvuzela for anyone watching the World Cup on a computer.  Read More

The bobble reusable water bottle features an activated carbon filter

Bottled water might seem like a very innocuous, ecologically-friendly beverage, but it does have its dark side – it has been estimated that 1.5 million barrels of oil are used annually for the production of one-use water bottles. About 38 million of those get tossed out each year. True, many of them go to recycling facilities, but those facilities aren’t exactly carbon footprint-free themselves. Then of course, there’s also the whole matter of wondering if you’re a sucker for paying to drink what is likely just filtered tap water. That’s where the bobble water bottle comes in. You just fill it from the faucet, and it filters the water as you drink.  Read More

The deployment of MMP units in Darfur Refugee Camps has brought  clean water and power to ...

Recently we reported on Marines and their deployment of GREENS solar-power for technological devices on the battlefield. World Water and Solar Technologies (WWST) has also placed solar-powered water purification units throughout the world including war-torn Darfur, Sudan. Working with the Humanitarian International Services Group (HISG), two high-volume Mobile Max Pure (MMP) water filters have been installed that use the sun for their power. Placed in a carefully selected location where it could do the most good, each unit can generate up to 3.5kW of solar electric power and provide 30,000 gallons of clean drinking water for the many thousands of displaced civilians.  Read More

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