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Journal of Chemistry
Volume 2015 (2015), Article ID 374190, 7 pages
http://dx.doi.org/10.1155/2015/374190
Research Article

Adsorption of Basic Brown and Chrysophenine from Water Solution by Magnesium Silicate Gel

1Chinese American Chemical Society, Houston, TX 77054, USA
2Dongchang College, Liaocheng University, Shandong 252059, China
3College of Science, Agricultural University of Hebei, Baoding 071001, China

Received 25 March 2015; Revised 7 June 2015; Accepted 8 June 2015

Academic Editor: José Morillo Aguado

Copyright © 2015 Zhun Zhao 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

Noncrystalline, high surface area magnesium silicate gel was successfully prepared by hydrothermal method. Such product was characterized by BET and XRD to determine surface area 576.4 m2·g−1, average pore width 2.76 nm, and amorphous surface. The adsorption behaviors of Basic Brown and Chrysophenine on magnesium silicate gel were investigated through changing initial concentration, adsorbent dosage, solution pH, contact time, and temperature. The experimental data was analyzed by the adsorption isotherms and kinetics. The results showed the adsorption progress was fast for Basic Brown, and the adsorption equilibrium was finished in 2 h, while the adsorption equilibrium of Chrysophenine was finished in 7 h. Freundlich isotherm model and second-order kinetic models described the adsorption process very well.