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The Scientific World Journal
Volume 2017, Article ID 2675897, 12 pages
https://doi.org/10.1155/2017/2675897
Research Article

Titanium Pyrophosphate for Removal of Trivalent Heavy Metals and Actinides Simulated by Retention of Europium

1Dirección de Investigación Tecnológica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, CP 11801, Ciudad de México, Mexico
2Universidad Autónoma del Estado de México, Instituto Literario 100, CP 50000, Toluca, Estado de México, Mexico
3Dirección de Investigación Científica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, CP 11801, Ciudad de México, Mexico

Correspondence should be addressed to Huemantzin Balan Ortiz-Oliveros; xm.xemeau@ozitrobh

Received 6 January 2017; Revised 24 April 2017; Accepted 9 May 2017; Published 12 July 2017

Academic Editor: Mu. Naushad

Copyright © 2017 Huemantzin Balan Ortiz-Oliveros et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work addresses the synthesis of titanium pyrophosphate, as well as the characterization and evaluation of the sorption process of europium, for removal of trivalent heavy metals and actinides simulate. The evaluation of the surface properties of titanium pyrophosphate was carried out determining the surface roughness and surface acidity constants. The values obtained from the determination of the surface roughness of the synthesized solid indicate that the surface of the material presents itself as slightly smooth. The FITEQL program was used to fit the experimental titration curves to obtain the surface acidity constants: and . The results of sorption kinetics evidenced that the pseudo-order model explains the retention process of europium, in which the initial sorption velocity was 8.3 × 10−4 mg g−1 min−1 and kinetic constant was 1.8 × 10−3 g mg min−1. The maximum sorption capacity was 0.6 mg g−1. The results obtained from sorption edge showed the existence of two bidentate complexes on the surface.