Work

Study of simultaneous complexation of heavy metals by a mixed heteropolyanion of dawson type

Year: 2013

Type: article

Abstract: In this work, the simultaneous complexation of the bivalent elements (Ni2+, Pb2+, Cd2+) by a lacunar mixed heteropolyanion of Dawson type (α2P2W15Mo2O61·nH2O)10− was studied. These elements are in couple (Ni2+, Pb2+), (Ni2+, Cd2+), and (Pb2+, Cd2+) in aqueous solutions. From the characterization of UV visible spectroscopy, the stability of the formed complexes [NiPbP2W15 Mo2]6−, and [CdNiP2W15 Mo2]6−, [CdPbP2W15 Mo2]6− according to the pH, the time, and the temperature of the reactional medium was studied. The stoechiometry and the constant of stability of these formed complexes were also given. From where it was noted that new mixed compounds having rather high constants of stability were ended, thus they could be steady to the elimination of heavy metals existing in water of industrial wastes.

Source: Desalination and Water Treatment

DOI: 10.1080/19443994.2013.848653

Authors: Nacéra Zabat, Mostefa Abbessi

Institution: Badji Mokhtar-Annaba University

Language: English

Topic: Polyoxometalates: Synthesis and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: hybrid

Estimated APC paid: $1,000