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Title: Effect of pH and temperature on Hg2+ water decontamination using ETS-4 titanosilicate
Author: Lopes, Cláudia B.
Otero, Marta
Lin, Zhi
Silva, Carlos Manuel
Pereira, Eduarda
Rocha, João
Duarte, Armando C.
Keywords: pH
Mercury (II) removal
ETS-4 titanosilicate
Issue Date: 15-Mar-2010
Publisher: Elsevier
Abstract: Batch stirred tank experiments were carried out to study the effect of pH (range 2-10, at 294 K) and temperature (277, 294 and 313 K, at pH 5) on the uptake of Hg(2+) ions by ETS-4 microporous titanosilicate. Changes in the pH have a significant effect on the ETS-4 uptake efficiency, the optimal range being 4-6. Due to competition effects, the chemical used to adjust the pH of the Hg(2+) solution also influences the uptake efficiency. Thermodynamic parameters for the uptake of Hg(2+) ions were calculated. For the temperature range studied, the Hg(2+) sorption increased with decreasing temperature.
Peer review: yes
DOI: 10.1016/j.jhazmat.2009.10.025
ISSN: 0304-3894
Appears in Collections:CESAM - Artigos
CICECO - Artigos
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