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dc.contributor.authorSilva, Luis F. O.
dc.contributor.authorCrissien, Tito J.
dc.contributor.authorMilanés Batista, Celene
dc.contributor.authorHoffmann Sampaio, Carlos
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.date.accessioned2020-11-25T12:46:08Z
dc.date.available2022-07-01T00:26:46Z
dc.date.issued2020-06-01
dc.identifier.citationSilva, L. [et al.]. A three-dimensional nanoscale study in selected coal mine drainage. "Chemosphere", 1 Juny 2020, vol. 248, p. 125946: 1-125946: 8.
dc.identifier.issn0045-6535
dc.identifier.urihttp://hdl.handle.net/2117/333150
dc.description© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.abstractSediments from coal mine drainages (CMDs) contain large quantities of suspended pollutants (possibly numerous chemical substances) along with sulfates and hazardous elements (e.g., chromium, zinc, copper, lead) that irreversibly accumulate in the water. As this accumulation can continue for decades after discontinuation of coal extraction, it is necessary to employ multidisciplinary approaches to control the threat in such zones. The quantity of amorphous material in some CMDs was evaluated by X-ray powder diffraction (XRD) using the Rietveld-based SIROQUANT software package. Modern Dual Beam Focused Ion Beam (FIB), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscope (H-TEM), and energy-dispersive X-ray spectrometer (EDS) were used to evaluate the occurrence and transformation of nanophases (NPs). FIB is used to determine the 3D distribution of different species (internal structure) within individual NPs, whereas EDS is used to observe NP features (e.g., shape, constituent, range, assembly, and form of polymerization). The mineralogy of the sediment from the Brazilian CMDs, including the proportions of quartz, clays, Al–Fe-oxides, and amorphous NPs, appears to be related to the nature of the mineral matter in the relevant coal cleaning rejects (CCRs). The sediments of CMDs from the Brazilian coal area derived at a lower-pH range have different amorphous compositions as compared to those derived at a higher pH range. These special amorphous compositions are shown to be related to several other sediment properties such as particle surface area. The information gleaned in this study will be useful for further geochemical evaluation of CMDs in other parts of the world.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Enginyeria de mines
dc.subject.lcshCoal mines and mining
dc.subject.lcshCoal mines and mining -- Brazil
dc.subject.lcshDrainage
dc.subject.lcshSuspended sediments
dc.subject.lcshNanoparticles
dc.subject.otherMulti-analytical approach
dc.subject.otherNon-destructive techniques
dc.subject.otherPotential impacts diagnosing
dc.subject.other3D nanoparticles study
dc.titleA three-dimensional nanoscale study in selected coal mine drainage
dc.typeArticle
dc.subject.lemacMines de carbó
dc.subject.lemacMines de carbó -- Brasil
dc.subject.lemacDrenatge
dc.subject.lemacNanopartícules
dc.contributor.groupUniversitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible
dc.identifier.doi10.1016/j.chemosphere.2020.125946
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0045653520301387
dc.rights.accessOpen Access
local.identifier.drac27211203
dc.description.versionPostprint (author's final draft)
local.citation.authorSilva, L.; Crissien, T.; Milanés, C.; Hoffmann, C.
local.citation.publicationNameChemosphere
local.citation.volume248
local.citation.startingPage125946: 1
local.citation.endingPage125946: 8


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