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desalination process

Posted by bonnie2922 on Dec 13, 2010 12:23:40 AM

The lack of clean drinking water is a major problem worldwide. The  World Health Organization says more than one billion people live in  areas where renewable water resources are not available. The problem is  especially serious in Asia and the Pacific. A United Nations report says  water availability in that area is the second lowest in the world,  after Africa.Nearly seven hundred thousand people in Asia and the Pacific lack  safe drinking water. The U.N. report notes that the world's poorest  countries are also the ones that use the most water for agriculture.  Agriculture uses about eighty percent of the water in the Asia-Pacific  area. There has also been an increase in water used for industry. China  and India more than tripled their industrial water use between nineteen  ninety-two and two thousand two.

The lack of clean drinking water around the world forces millions of  people to drink unsafe water. bailey button ugg boots This leads to an increase in diseases like  diarrhea, the second leading cause of death in children under five.  Floods, droughts, pollution and climate change have created even more  problems.The Millennium Development Goals for two thousand fifteen call for a  fifty percent decrease in the number of people without safe drinking  water and basic sanitation.

Scientists, ugg boots sale governments and aid organizations around the world are  increasing their efforts to meet these goals.ugg bailey button Still the U.N. says there  is much work to be done. During its yearly World Water Day observance  last month it called on the international community to work together to  solve the water crisis. Researchers at the Massachusetts Institute of  Technology are doing just that ugg bailey button boots.The American and South Korean researchers are investigating a new  technology for turning sea water into drinking water. The new technology  is called ion concentration polarization. The process uses electricity  to help separate electrically charged salt particles from water to make  it drinkable.

The researchers tested their desalination process on a computer chip  the size of a postage stamp. The chip removed ninety-nine percent of the  salt and other harmful substances from water samples. So far the method  purifies only small amounts of water. But the researchers say it may  someday be available as a personal water purification product.

And that's the VOA Special English Development Report, written by June Simms. I'm Steve Ember.

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