Removal of lead in aqueous solutions using amorphous nanoaluminophosphates

Wendy Rondón, Ángela B. Sifontes, David Freire, Manuelita Quintal, Edgar Cañizales, Franklin J. Méndez, Ligia Llovera, Yraida Diaz, Joaquín L. Brito


Amorphous aluminophosphates nanoparticles with diameter sizes from 23 to 30 nm were used for the adsorption of lead ions (Pb2+) in aqueous solutions. The materials were biosynthesized using Saccharomyces cerevisiae as a biological template. Adsorption studies were conducted using the batch method, employing 100 mg of the solid and 200 µg L-1 of lead ions. The quantitative determination of Pb2+ was carried out by electrothermal atomic absorption spectrometry (ETAAS). The percentage of removal (EF), adsorption capacity qe (µg g-1) and removal coefficient Kd (mL g-1) averaged 40, 90 and 800, respectively. The results showed the potential of these materials for the adsorption of Pb2+ ions, and that these materials are good candidates for use in the remediation of contaminated water.


adsorption; biosynthesis; nanoparticles

Revista Ambiente & Água. ISSN:1980-993X  DOI:10.4136/1980-993X



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