Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/4927
Título: Green synthesis of covellite nanocrystals using biologically generated sulfide: potential for bioremediation systems
Autor: Costa, J. P. da
Girão, Ana Violeta
Lourenço, J. P.
Monteiro, O. C.
Trindade, Tito
Costa, Maria Clara
Palavras-chave: CuS
Nanoparticles
Nanocomposites
Sulfate-reducing bacteria
Bioremediation
Data: Out-2013
Editora: Elsevier
Citação: da Costa, J.P.; Girão, Ana Violeta; Lourenço, João P.; Monteiro, O.C.; Trindade, Tito; Costa, Maria Clara. Green synthesis of covellite nanocrystals using biologically generated sulfide: Potential for bioremediation systems, Journal of Environmental Management, 128, 226-232, 2013.
Resumo: This work describes the synthesis of CuS powders in high yield and via an environmentally friendly and straightforward process, under ambient conditions (temperature and pressure), by adding to aqueous copper (II) a nutrient solution containing biologically generated sulfide from sulfate-reducing bacteria (SRB). The powders obtained were composed of CuS (covellite) nanoparticles (NPs) exhibiting a spheroid morphology (<5 nm). The relevance of this method to obtain CuS supported solid substrates has been demonstrated by performing the synthesis in the presence of TiO2 and SiO2 submicron particles. We further extended the work carried out, which substantiates the potential of using biogenic sulfide for the production of covellite nanocrystals and composites, using the effluent of a bioremediation column. Hence, such process results in the synthesis of added value products obtained from metal rich effluents, such as metallurgical and industrial ones, or Acid Mine Drainage (AMD), when associated with bioremediation processes.
Peer review: yes
URI: http://hdl.handle.net/10400.1/4927
DOI: http://dx.doi.org/10.1016/j.jenvman.2013.05.034
ISSN: 0301-4797
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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