Green synthesis of covellite nanocrystals using biologically generated sulfide: potential for bioremediation systems. | - CCMAR -

Journal Article

TitleGreen synthesis of covellite nanocrystals using biologically generated sulfide: potential for bioremediation systems.
Publication TypeJournal Article
Authorsda Costa, JP, Girão, AVioleta, Lourenço, JP, Monteiro, OC, Trindade, T, Costa, MClara
Year of Publication2013
JournalJ Environ Manage
Volume128
Date Published2013 Oct 15
Pagination226-32
ISSN1095-8630
KeywordsBiodegradation, Environmental, Copper, Desulfovibrio desulfuricans, Microscopy, Electron, Scanning, Nanoparticles, Silicon Dioxide, Titanium, X-Ray Diffraction
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.

DOI10.1016/j.jenvman.2013.05.034
Sapientia

http://www.ncbi.nlm.nih.gov/pubmed/23747373?dopt=Abstract

Alternate JournalJ. Environ. Manage.
PubMed ID23747373