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dc.contributor.authorRamírez‑Aldaba, Hugo-
dc.contributor.authorVázquez‑Arenas, Jorge-
dc.contributor.authorSosa‑Rodríguez, Fabiola S.-
dc.contributor.authorValdez‑Pérez, Donato-
dc.contributor.authorRuiz‑Baca, Estela-
dc.contributor.authorTrejo‑Córdoba, Gabriel-
dc.contributor.authorEscobedo‑Bretado, Miguel A.-
dc.contributor.authorLartundo‑Rojas, Luis-
dc.contributor.authorPonce‑Peña, Patricia-
dc.contributor.authorLara, René H.-
dc.identifier.citationRamírez-Aldaba, H., Vázquez-Arenas, J., Sosa-Rodríguez, F. S., Valdez-Pérez, D., Ruiz-Baca, E., Trejo-Córdoba, G., . . . Lara, R. H. (2018). Changes in biooxidation mechanism and transient biofilm characteristics by as(V) during arsenopyrite colonization with acidithiobacillus thiooxidans. Journal of Industrial Microbiology & Biotechnology, 45(8), 669-680. doi:10.1007/s10295-018-2051-3es
dc.descriptionElectronic supplementary material The online version of this article ( contains supplementary material, which is available to authorized
dc.description.abstractChemical and surface analyses are carried out using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM–EDS), atomic force microscopy (AFM), confocal laser scanning microscopy (CLSM), glow discharge spectroscopy (GDS) and extracellular surface protein quantification to thoroughly investigate the effect of supplementary As(V) during biooxidation of arsenopyrite by Acidithiobacillus thiooxidans. It is revealed that arsenic can enhance bacterial reactions during bioleaching, which can strongly influence its mobility. Biofilms occur as compact-flattened microcolonies, being progressively covered by a significant amount of secondary compounds (S n 2- , S0, pyrite-like). Biooxidation mechanism is modified in the presence of supplementary As(V), as indicated by spectroscopic and microscopic studies. GDS confirms significant variations between abiotic control and biooxidized arsenopyrite in terms of surface reactivity and amount of secondary compounds with and without As(V) (i.e. 6 μm depth). CLSM and protein analyses indicate a rapid modification in biofilm from hydrophilic to hydrophobic character (i.e. 1–12 h), in spite of the decrease in extracellular surface proteins in the presence of supplementary As(V) (i.e. stressed biofilms). (i.e. stressed biofilms).es
dc.description.sponsorshipFacultad de Ciencias Químicas, Departamento de Ciencia de Materiales, Laboratorio de Electroquímica y Análisis de Superficies, Universidad Juárez del Estado de Durango (UJED), Av. Veterinaria S/N, Circuito Universitario, Col. Valle del Sur, 34120, Durango, DGO, Mexico Facultad de Ciencias Forestales, UJED, Av. Río Papaloapan S/N, Col. Valle del Sur, 34120, Durango, DGO, Mexico Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Avenida Acueducto S/N, Col. La Laguna Ticomán, 07340, Mexico City, Mexico Crecimiento Económico y Medio Ambiente, Departamento de Economía, Universidad Autónoma Metropolitana-Azcapotzalco (UAM-A), Av. San Pablo 180, Azcapotzalco, 02200, Mexico City, Mexico Instituto Politécnico Nacional (IPN), UPALM, Edif. Z-4 3er Piso, 07738, Mexico City, Mexico Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Parque Tecnológico Querétaro-Sanfandila, 76703, Pedro Escobedo, QRO, Mexico Instituto Politécnico Nacional (IPN), CNMN, Av. Luis Enrique Erro S/N, Unidad Profesional Adolfo López Mateos, Zacatenco, 07738, Mexico City, Mexicoes
dc.subjectArsenopyrite biooxidationes
dc.subjectStressed biofilmses
dc.subjectAcidithiobacillus thiooxidanses
dc.subjectGlow discharge spectroscopyes
dc.subjectSupplementary As(V)es
dc.titleChanges in biooxidation mechanism and transient biofilm characteristics by As(V) during arsenopyrite colonization with Acidithiobacillus thiooxidanses
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