INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
Microorganism mediated biosynthesis of metal chalcogenides; a powerful tool to transform toxic effluents into functional nanomaterials
MARÍA PAULA VENA; SARA A. BILMES; MATÍAS JOBBÁGY
SCIENCE OF THE TOTAL ENVIRONMENT
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2016 p. 804 - 804
Cadmiumcontained in soil and water can be taken up by certain crops and aquatic organisms and accumulate in the food-chain, thus removal of Cd from mining or industrial effluents ? i.e. Ni-Cd batteries, electroplating, pigments, fertilizers ? becomes mandatory for human health. In parallel, there is an increased interest in the production of luminescent Q-dots for applications in bioimaging, sensors and electronic devices, even the present synthesis methods are economic and environmentally costly. An alternative green pathway for producing Metal chalcogenides (MC: CdS, CdSe, CdTe) nanocrystals is based on the metabolic activity of living organisms. Intracellular and extracellular biosynthesis of can be achieved within a biomimetic approach feeding living organisms with Cd precursors providing newroutes for combining bioremediationwith green routes for producing MC nanoparticles. In this mini-reviewwe present the state-of-the-art of biosynthesis of MC nanoparticles with a critical discussion of parameters involved and protocols. Few existing examples of scaling-up are also discussed. A modular reactor based on microorganisms entrapped in biocompatible mineral matrices ? already proven for bioremediation of dissolved dyes ? is proposed for combining both Cd-depletion and MC nanoparticle´s production.