Extraction of chlorpyrifos and malathion from water by metal nanoparticles

Sreekumaran Nair, A. ; Pradeep, T. (2007) Extraction of chlorpyrifos and malathion from water by metal nanoparticles Journal of Nanoscience and Nanotechnology, 7 (7). pp. 1-7. ISSN 1533-4880

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Official URL: http://www.dstuns.iitm.ac.in/listpdf/152.pdf

Related URL: http://dx.doi.org/10.1166/jnn.2007.733

Abstract

The nanoparticles of gold and silver in solution state and supported over activated alumina are effective systems for the quantitative removal of chlorpyrifos and malathion, two common pesticides found in surface waters of developing nations, from water. In the solution phase, these pesticides adsorb onto the nanoparticles' surfaces and upon interaction for a long time, the nanoparticles with adsorbed pesticides precipitate. In contrast, complete removal of these pesticides occurs when contaminated water is passed over nanoparticles supported on alumina. A prototype of an on-line filter was made using a column of activated alumina powder loaded with silver nanoparticles and the device was used for pesticide removal for extended periods. We believe that the method has great technological potential in drinking water purification, especially using silver nanoparticles.

Item Type:Article
Source:Copyright of this article belongs to American Scientific Publishers.
ID Code:84224
Deposited On:24 Feb 2012 13:22
Last Modified:24 Feb 2012 13:22

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