Water Purification
"Water purification is a process of removing undesirable chemicals, materials, and biological contaminants from raw water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water) but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacology, chemical and industrial applications. In general the methods used include physical processes such as filtration and sedimentation, biological processes such as slow sand filters or activated sludge, chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light. " (Wikipedia, 10/13/2010, Water Purification)
Recent US Patents
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8/3/2010
7,767,091
Method for encapsulating pollutants from water using modified dendrimeric polymers
Paleos et al of the The National Center for Scientific Research "Demokritos" in Greece, developed a dendritic copolymer which will remove water contaminants at parts per billion and below. The polymer consists of iminio branches extended with lipophilic hydrocarbons. These branches become molecular claws which remove pollutants such as benzene and polyaromatic compounds to less than 5 parts per billion. (RDV 10/13/2010)