New membrane technology offers cheap drinking water from seawater
The consumption of drinking water is still increasing, while the availability of drinking water decreases. About 1 billion people in the world have no access to enough clean drinking water, while 70% of the Earth is covered with water.
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Other techniques to convert seawater into drinking water, like RO, MSF, or MED, use a lot of energy to vaporize the water or push the water through a membrane under high pressure. Memstill uses cheap waste-energy, which cuts down the energy consumption and CO2 emissions. The cost of desalination of one cubic meter water with Memstill could be under $0.50, where other distillation techniques cost about 1 dollar for the same amount of water.
State-of-the-art desalination technology - more information on the memstill web site.
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January 16th, 2007 at 7:07 pm
[...] Pretty cool. Getting clean water is a large problem throughout the world. Unfortunately this is not the solution yet - each machine costs $500,000. [...]
June 10th, 2008 at 7:02 pm
“The water needs to be shaded because when sunlight mixes with the bromide and chlorine in Ivanhoe’s water, the carcinogen bromate forms…”