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THE ADSORPTION OF HEAVY METAL IONS ON POROUS CALCIUM ALGINATE MICROPARTICLES

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Author(s): Iulia Nita | Monica Iorgulescu | Manuela Florea Spiroiu | M. Ghiurea | C. Petcu | Otilia Cinteza

Journal: Analele Universitatii Bucuresti : Chimie
ISSN 1220-871X

Volume: XVI;
Issue: I;
Start page: 59;
Date: 2007;
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ABSTRACT
Microparticles from nontoxic biopolymer were prepared in order to investigate the adsorption process of heavy metals in polymeric porous beads. The aim of the study is a new method to remove bivalent ions (Pb2+; Cd2+) from synthetic wastewater using calcium alginate microparticles. The alginate (a natural polymer obtained from marine algae) was tested as adsorbent material, due to its good affinity for the bivalent metal ions. The adsorption of the heavy metals was studied as a function of contact time between the alginate and the synthetic wastewater samples and the morphology of polymeric beads. The calcium alginate microparticles were prepared using a laboratory procedure, dropping aqueous solution of sodium alginate in a calcium chloride solution. The polymeric microparticles with controlled porosity appear to be a suitable alternative to develop a method for heavy metal removal from industrial wastewater.
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