Green synthesis of covellite nanocrystals using biologically generated sulfide: Potential for bioremediation systems

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abstract

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. (C) 2013 Elsevier Ltd. All rights reserved.

keywords

SULFATE-REDUCING BACTERIA; ACID-MINE DRAINAGE; METAL NANOPARTICLES; HYDROGEN-SULFIDE; PRECIPITATION; CUS; GROWTH; WATER; REACTOR; CARBON

subject category

Environmental Sciences & Ecology

authors

da Costa, JP; Girao, AV; Lourenco, JP; Monteiro, OC; Trindade, T; Costa, MC

our authors

foto Ana Violeta Girão

Ana Violeta Girão

Junior Researcher
foto João Miguel Martins Novaes Pinto da Costa

João Miguel Martins Novaes Pinto da Costa

Research Fellowship
foto Tito Trindade

Tito Trindade

Full professor

Groups

G1 - Porous Materials and Nanosystems
G3 - Electrochemical Materials, Interfaces and Coatings

acknowledgements

Funding by Fundacao para a Ciencia e a Tecnologia (FCT) through a PhD grant (SFRH/BD/43784/2008) and through project PTDC/AAG-TEC/2721/2012 is acknowledged. A. V. Girao also thanks FCT for the Post-Doc grant (SFRH/BPD/66407/2009).

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Publication Details

type
Journal Article
year
2013
journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
volume
128
publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
issn
0301-4797
digital object identifier
10.1016/j.jenvman.2013.05.034
web of science article identifier
WOS:000326203400026

Journal Metrics (JCR 2019)

Journal Impact Factor
5.647
Journal Impact Factor (5 yrs)
5.708
category normalized journal percentile
87.736

Citations

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