Uptake of Hg2+ from aqueous solutions by microporous titano- and zircono-silicates
AUTOR(ES)
Lopes, Cláudia B., Coimbra, Joana, Otero, Marta, Pereira, Eduarda, Duarte, Armando C., Lin, Zhi, Rocha, João
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2008
RESUMO
Being mercury one of the most toxic heavy metals present in the environment, it is of major concern to develop cleanup technologies to remove it from wastewater and recover mercury polluted ecosystems. In this context, we study the potential of some microporous titanosilicates and zirconosilicates for taking up Hg2+ from aqueous solutions. These materials have unique chemical and physical properties, and here we are able to confirm that they readily remove Hg2+ from aqueous solutions. Moreover, the presence of the competitive Mg2+ and Na+, which are some of the dominant cations in natural waters, does not reduce the uptake capacity of some of these materials. Thus, several inorganic materials reported here may have important environmental applications, efficiently removing Hg2+ from aqueous solutions.
Documentos Relacionados
- Adaptation of Aquatic Microbial Communities to Hg2+ Stress †
- Poly(2-Furyl)Methylenesulfide as a Resin to Uptake of Metal Ions from Aqueous Solutions
- Sorption of 2-Chlorophenol from aqueous solutions by functionalized cross-linked polymers
- Role of Na+ in transport of Hg2+ and induction of the Tn21 mer operon.
- Environmental significance of the potential for mer(Tn21)-mediated reduction of Hg2+ to Hg0 in natural waters.