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Purification

The LIFESAVER Jerrycan is a large water purification jug that could be of great use to everyone from campers to inhabitants of remote villages. The Jerrycan incorporates a built-in filtration system which can purify 18.5 liters (4.9 gallons) of water at a time, along with an integrated shower attachment that lets you use the water for cleaning as well as drinking. Read More
Silver is known for its antibacterial qualities, and has thus found its way into water filters created at institutions such as Stanford and McGill universities. Given that these filters are often used in developing nations, however, it would be nice if they could also contribute to the local economy – instead of being just one more thing that’s brought in from outside. Well, that’s just the idea behind the University of Virginia’s PureMadi filters and MadiDrops. Read More
A team of researchers at Rice University has developed a new technology that uses light-absorbing nanoparticles to convert solar energy directly into steam. Even though it is already significantly more efficient than solar panels at producing electricity, the technology will likely find its first applications in low-cost sanitation, water purification and human waste treatment for the developing world. Read More
Lack of access to clean water causes the deaths of millions of people worldwide and in regions such as sub-Saharan Africa, clean water can be several days walk away. Producing a simple and cheap method of purifying water which doesn’t rely on first-world amenities such as a steady electricity supply, or batteries, has proven a significant challenge thus far, but a new prototype device created by Ryan Lynch and Marcus Triest offers hope of doing just this, for an estimated cost of around US$5. Read More
This rather novel solar collector draws inspiration from the lotus flower to provide small-scale solar energy - both electric and thermal - to domestic and small business users. The aptly named Monarch Lotus' (rebranded from the Solar Umbrella) 18 petals unfold to to form a 4-meter (13-foot) diameter flower that will, if development goes to plan, produce 3 kW of photovoltaic electrical power and 3 kW of solar thermal power per 100-kg (220-pound) unit in ideal conditions. Read More
When you're dealing with the impurities of your local city water supply, a Brita filter should be enough to give you clean-tasting water. But when you're dealing with the impurities lingering in a raw, untreated stream in the woods, you'll need something stronger. This solution from Camelbak - the All Clear bottle - gives you an integrated UV purifier designed to kill all those nasty microorganisms that just live to wring your intestines out. Read More
Water purifier manufacturer SteriPEN has updated its lineup of portable products, with a UV-based unit called the SteriPEN Freedom. Billed as the smallest, lightest and first rechargeable UV water purifier on the market, it disinfects up to 16 oz (0.5 L) of water in 48 seconds. Read More
When he set out on a trip to Cambodia in 2008, Industrial Design student Jonathan Liow had no idea it was going to be a life-changing experience. Upon seeing the poverty and poor living conditions in that country, however, he decided that he wanted to build things that could help people. After hearing about the need for cheap and effective water purification in Africa, he proceeded to create the Solarball for his graduate project at Australia's Monash University. The ball is reportedly capable of producing 3 liters (about 3 quarts) of drinkable water per day, using nothing but polluted water and sunlight. Read More
The skin of a banana has been used to great comic effects in numerous slapstick routines for many years. It's also good for the skin and is a traditional cure for warts. You can polish shoes and silver with it. You can make wine with it and it's even been known to find itself being dried, wrapped in paper and smoked. Now, research published in the journal of the American Chemical Society claims that mashed up peel can remove heavy metals from river water. Read More
Concerned about our rising population having serious water supply issues in the not too distant future, Lilypad floating city designer Vincent Callebaut has come up with a floating amphibious garden that can clean our rivers as it travels the waterways of Europe. His proposed "audacious, avant-garde" Physalia project will be a self-sufficient, nomadic research vessel which can also host aqua-focused exhibitions and conferences. Read More
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