Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 20, Issue 11, Pages 8220-8226Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-013-1797-4
Keywords
Heavy metal; Environment; Eichhornia crassipes; Polymethyl methacrylate; Thin film; Ni; Cd; Laser-induced breakdown spectroscopy
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Funding
- Cairo University, National Institute of Laser Enhanced Sciences, Department of Laser Application in Metrology, Photochemistry and Agriculture, Cairo, Egypt
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Release of heavy metals into waterways without treatment can cause a significant threat to the environment. In this paper, we present a method of improving the removal of heavy metals by using Eichhornia crassipes roots (ECR) supported on a polymethyl methacrylate (PMMA) thin film. The functional groups of the synthesized PMMA sample were identified by Fourier transform infrared spectroscopy. ECR roots dried fine powder has a small size and large surface area. They contain many polyfunctional metal-binding sites for both cationic and anionic metal complexes. The results show that using 0.1 g of ECR, about 70 % of Cd present in the water was removed in 4 h; while under the same conditions, about 55 % of Ni was removed. The concentrations of Ni and Cd were measured by laser-induced breakdown spectroscopy, a promising technique for the elemental analysis of heavy metals.
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