Application of nanotechnology in water purification and removal of pollutants
Subject Areas : The Application of Chemistry in Environment
1 - Department of Physics, Naragh Branch, Islamic Azad University, Naragh, Iran
Keywords: : nano technology, catalyst, pollutants, membrane, nano filter,
Abstract :
Water is one of the most essential elements of life on earth, and although more than 70% of the earth's surface is covered with water, less than 3% of it is fresh water. Of this amount, 79% belongs to the ice peaks, 20% is underground water that is not easily accessible, and in total, only one ten thousandth of the total water on the planet is easily accessible to humans at any time. The availability of safe and clean water is one of the most important issues facing mankind, and gradually, as the amount of water consumption increases, pollutants also contaminate water sources in various ways, and this issue will become more critical in the future. . Accepting the right to enjoy water as a human right may be the most important step in solving the difficulty of providing this most basic element of people's lives. Nanotechnology has led to tremendous changes in the use of natural resources, energy and water and has reduced sewage and pollution. In the new nano technology, by using various methods, it is possible to recycle water from polluted waste water for agricultural, industrial and even domestic purposes. Also, nano technology has the ability to remove small pollution from water sources (less than 200 nm) and air (below 20 nm) and continuously measure and reduce pollution in larger areas. Due to the effective removal of pollutants and the reduction of the costs of water production, the use of nanotechnology has received more attention and acceptance from the people than the old methods.
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