title: Bio-absorption of Ni and Cd on Eichhornia crassipes root thin film.
abstract: 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.
authors.affiliation: National Institute of Laser Enhanced Sciences (NILES), Department of Laser Applications in Metrology, Photochemistry and Agriculture, Cairo University, Giza, Egypt, dr_souad_elfeky@niles.edu.eg.
authors.forename: Souad A
authors.initials: SA
authors.lastname: Elfeky
authors.forename: Hisham
authors.initials: H
authors.lastname: Imam
authors.forename: Alsayed A
authors.initials: AA
authors.lastname: Alsherbini
mesh_terms: D000042:Absorption; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000032:analysis / Q000378:metabolism*; D031806:Eichhornia / Q000737:chemistry / Q000378:metabolism*; D009532:Nickel / Q000032:analysis / Q000378:metabolism*; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium; D009532:Nickel