Mostrar el registro sencillo del ítem
Combined bioreduction and volatilization of SeVI by Stenotrophomonas bentonitica: Formation of trigonal selenium nanorods and methylated species
dc.contributor.author | Ruiz Fresneda, Miguel Ángel | |
dc.contributor.author | Fernández Cantos, María V. | |
dc.contributor.author | Gómez Bolívar, Jaime | |
dc.contributor.author | Pinel Cabello, María | |
dc.contributor.author | Merroun, Mohamed Larbi | |
dc.date.accessioned | 2023-12-14T11:54:32Z | |
dc.date.available | 2023-12-14T11:54:32Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Published version: RUIZ-FRESNEDA, Miguel A., FERNÁNDEZ-CANTOS, María V., GÓMEZ-BOLÍVAR, Jaime, ESWAYAH, Abdurrahman S., GARDINER, Philip H.E., PINEL-CABELLO, Maria, SOLARI, Pier L. and MERROUN, Mohamed L. (2023). Combined bioreduction and volatilization of SeVI by Stenotrophomonas bentonitica: Formation of trigonal selenium nanorods and methylated species. The Science of the total environment, 858 (Pt 2): 160030 | es_ES |
dc.identifier.uri | https://hdl.handle.net/10481/86208 | |
dc.description.abstract | Nowadays, metal pollution due to the huge release of toxic elements to the environment has become one of the world’s biggest problems. Bioremediation is a promising tool for reducing the mobility and toxicity of these contaminants (e.g. selenium), being an efficient, environmentally friendly, and inexpensive strategy. The present study describes the capacity of Stenotrophomonas bentonitica to biotransform SeVI through enzymatic reduction and volatilization processes. HAADF-STEM analysis showed the bacterium to effectively reduce SeVI (200 mM) into intra- and extracellular crystalline Se0 nanorods, made mainly of two different Se allotropes: monoclinic (m-Se) and trigonal (t-Se). XAS analysis appears to indicate a Se crystallization process based on the biotransformation of amorphous Se0 into stable t-Se nanorods. In addition, results from headspace analysis by gas chromatography-mass spectometry (GC-MS) revealed the formation of methylated volatile Se species such as DMSe (dimethyl selenide), DMDSe (dimethyl diselenide), and DMSeS (dimethyl selenenyl sulphide). The biotransformation pathways and tolerance are remarkably different from those reported with this bacterium in the presence of SeIV. The formation of crystalline Se0 nanorods could have positive environmental implications (e.g. bioremediation) through the production of Se of lower toxicity and higher settleability with potential industrial applications. | es_ES |
dc.description.sponsorship | Grant RTI2018. 101548.B.I00 to M.L.M awarded by the Spain Ministry of Science and Innovation | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | |
dc.subject | Bacteria | es_ES |
dc.subject | Selenate | es_ES |
dc.subject | Reduction | es_ES |
dc.subject | Bioremediation | es_ES |
dc.subject | Nanorod | es_ES |
dc.subject | Volatilization | es_ES |
dc.title | Combined bioreduction and volatilization of SeVI by Stenotrophomonas bentonitica: Formation of trigonal selenium nanorods and methylated species | es_ES |
dc.type | journal article | es_ES |
dc.rights.accessRights | open access | es_ES |
dc.identifier.doi | https://doi.org/10.1016/j.scitotenv.2022.160030 | |
dc.type.hasVersion | AM | es_ES |