Document
type: Class

Continuant
type: Class

Entity
type: Class

Generically Dependent Continuant
type: Class

individual
rights: termsOfUse
date: 2026-08-24T03:58:30
publisher: vivo
type: Document
label: RDF description of Chemical and surface analysis during evolution of arsenopyrite oxidation by Acidithiobacillus thiooxidans in the presence and absence of supplementary arsenic - http://orbis.uaslp.mx/vivo/individual/scopus4838

Science of the Total Environment
type: Information Content Entity
type: Periodical
type: Generically Dependent Continuant
type: Continuant
type: Collection
type: Thing
type: Journal
publication venue for: Chemical and surface analysis during evolution of arsenopyrite oxidation by Acidithiobacillus thiooxidans in the presence and absence of supplementary arsenic
type: Entity
type: Document

Article
type: Class

Consejo Nacional de Ciencia y Tecnología, CONACYT
type: Relationship
type: BFO_0000020
type: Entity
type: Thing
type: Grant
type: Continuant
funding vehicle for: Chemical and surface analysis during evolution of arsenopyrite oxidation by Acidithiobacillus thiooxidans in the presence and absence of supplementary arsenic

Information Content Entity
type: Class

Chemical and surface analysis during evolution of arsenopyrite oxidation by Acidithiobacillus thiooxidans in the presence and absence of supplementary arsenic
page end: 1119
chemicalscas: arsenic, 7440-38-2; pyrite, 1309-36-0; sulfide, 18496-25-8; Arsenic; Arsenicals; arsenopyrite; Iron Compounds; Minerals; Sulfides; Water Pollutants, Chemical
doi: 10.1016/j.scitotenv.2016.05.143
abstract: Bioleaching of arsenopyrite presents a great interest due to recovery of valuable metals and environmental issues. The current study aims to evaluate the arsenopyrite oxidation by Acidithiobacillus thiooxidans during 240 h at different time intervals, in the presence and absence of supplementary arsenic. Chemical and electrochemical characterizations are carried out using Raman, AFM, SEM-EDS, Cyclic Voltammetry, EIS, electrophoretic and adhesion forces to comprehensively assess the surface behavior and biooxidation mechanism of this mineral. These analyses evidence the formation of pyrite-like secondary phase on abiotic control surfaces, which contrast with the formation of pyrite (FeS2)-like, orpiment (As2S3)-like and elementary sulfur and polysulfide (Sn2 −/S0) phases found on biooxidized surfaces. Voltammetric results indicate a significant alteration of arsenopyrite due to (bio)oxidation. Resistive processes determined with EIS are associated with chemical and electrochemical reactions mediated by (bio)oxidation, resulting in the transformation of arsenopyrite surface and biofilm direct attachment. Charge transfer resistance is increased when (bio)oxidation is performed in the presence of supplementary arsenic, in comparison with lowered abiotic control resistances obtained in its absence; reinforcing the idea that more stable surface products are generated when As(V) is in the system. Biofilm structure is mainly comprised of micro-colonies, progressively enclosed in secondary compounds. A more compact biofilm structure with enhanced formation of secondary compounds is identified in the presence of supplementary arsenic, whereby variable arsenopyrite reactivity is linked and attributed to these secondary compounds, including Sn2 −/S0, pyrite-like and orpiment-like phases. © 2016 Elsevier B.V.
origen: scopus
related by: authorship_28896
type: Document
related by: authorship_28895
related by: authorship_28900
type: Thing
type: Generically Dependent Continuant
type: Article
most specific type: Document
related by: authorship_28898
date time value: article date 4839
crisid: 4839
type: Entity
related by: authorship_28897
freetext keyword: Acidithiobacillus thiooxidans; Arsenopyrite biooxidation; Biofilm modification; Direct cell attachment; Electrochemical impedance spectroscopy; Toxic arsenic Arsenic; Biofilms; Charge transfer; Chemical analysis; Cyclic voltammetry; Electrochemical impedance spectroscopy; Metal recovery; Oxidation; Pyrites; Surface analysis; Acidithiobacillus thiooxidans; Bio-oxidation; Cell attachments; Charge transfer resistance; Electrochemical characterizations; Electrochemical reactions; Recovery of valuable metals; Toxic arsenic; Arsenic compounds; arsenic; arsenic derivative; arsenopyrite; orpiment; polysulfide; pyrite; sulfur derivative; unclassified drug; arsenic; arsenopyrite; iron derivative; mineral; organoarsenic derivative; sulfide; arsenic; arsenopyrite; bacterium; biofilm; chemical analysis; electrochemistry; oxidation; Acidithiobacillus thiooxidans; adhesion; Article; atomic force microscopy; biofilm; chemical analysis; chemical reaction; controlled study; cyclic potentiometry; electrochemical impedance spectroscopy; electrochemistry; electrophoresis; nonhuman; oxidation; priority journal; Raman spectrometry; scanning electron microscopy; surface property; Acidithiobacillus thiooxidans; biofilm; bioremediation; chemistry; metabolism; oxidation reduction reaction; physiology; time factor; water pollutant; Acidithiobacillus thiooxidans; Acidithiobacillus thiooxidans; Arsenic; Arsenicals; Biodegradation, Environmental; Biofilms; Iron Compounds; Minerals; Oxidation-Reduction; Sulfides; Time Factors; Water Pollutants, Chemical
related by: authorship_28901
page start: 1106
type: Continuant
e iscopus: 2-s2.0-84989808191
has funding vehicle: Consejo Nacional de Ciencia y Tecnología, CONACYT
related by: authorship_28894
most specific type: Article
related by: authorship_28899
type: Information Content Entity
related by: authorship_28893
estado: published
has publication venue: Science of the Total Environment
related by: authorship_28902
pmid: 27312277
volume: 566-567