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http://hdl.handle.net/10773/19212
Title: | Green synthesis of covellite nanocrystals using biologically generated sulfide: Potential for bioremediation systems |
Author: | da Costa, J. P. Girao, Ana Violeta Lourenco, Joao P. Monteiro, O. C. Trindade, Tito Costa, Maria Clara |
Keywords: | SULFATE-REDUCING BACTERIA ACID-MINE DRAINAGE METAL NANOPARTICLES HYDROGEN-SULFIDE PRECIPITATION CUS GROWTH WATER REACTOR CARBON |
Issue Date: | 2013 |
Publisher: | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19212 |
DOI: | 10.1016/j.jenvman.2013.05.034 |
ISSN: | 0301-4797 |
Publisher Version: | 10.1016/j.jenvman.2013.05.034 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Green synthesis of covellite nanocrystals using biologically generated sulfide Potential for bioremediation systems_10.1016j.jenvman.2013.05.034.pdf | 1.52 MB | Adobe PDF |
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