An introductory TEM study of Fe-nanominerals within coal fly ash
The investigation presented here was conducted during a wider experiment on the technical feasibility and environmental impacts of tire combustion in a Brazilian coal-fired power station. Nanometric-sized crystalline phases in fly ash were characterised using energy-dispersive X-ray spectrometer (EDS) and high-resolution transmission electron microscopy (HR-TEM) images. The nanoparticles, which register abundance peaks at 10 nm and 100 nm, include iron-rich oxide (e.g. hematite), Fe-sulphate (e.g., yavapaiite: KFe(SO4)2), and Fe-aluminumsilicate glass. Individual metalliferous nanoparticles have a heterogeneous microstructure in which elements such as iron, aluminum and silicon are not uniformly distributed. HR-TEM offers a powerful analytical technique in the study of fly ash nanoparticles, providing a better understanding of the detailed chemistry of this potentially strongly bioreactive component of atmospheric particulate matter. © 2009 Elsevier B.V. All rights reserved.
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dig-idaea-es-10261-632602020-05-29T10:18:10Z An introductory TEM study of Fe-nanominerals within coal fly ash Silva, L.F.O. Moreno, Teresa Querol, Xavier The investigation presented here was conducted during a wider experiment on the technical feasibility and environmental impacts of tire combustion in a Brazilian coal-fired power station. Nanometric-sized crystalline phases in fly ash were characterised using energy-dispersive X-ray spectrometer (EDS) and high-resolution transmission electron microscopy (HR-TEM) images. The nanoparticles, which register abundance peaks at 10 nm and 100 nm, include iron-rich oxide (e.g. hematite), Fe-sulphate (e.g., yavapaiite: KFe(SO4)2), and Fe-aluminumsilicate glass. Individual metalliferous nanoparticles have a heterogeneous microstructure in which elements such as iron, aluminum and silicon are not uniformly distributed. HR-TEM offers a powerful analytical technique in the study of fly ash nanoparticles, providing a better understanding of the detailed chemistry of this potentially strongly bioreactive component of atmospheric particulate matter. © 2009 Elsevier B.V. All rights reserved. The authors express their gratitude to the heartfelt help of FEHIDRO, Environmental Foundation of Santa Catarina State — FATMA and Ferrovia Teresa Cristina. The manuscript was much improved by the comments of Drs. Frans Waanders, Jim Hower and Wes Gibbons. Peer Reviewed 2012-12-19T11:02:43Z 2012-12-19T11:02:43Z 2009 2012-12-19T11:02:43Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.scitotenv.2009.05.044 issn: 0048-9697 e-issn: 1879-1026 Science of the Total Environment 407 (17): 4972-4974 (2009) http://hdl.handle.net/10261/63260 10.1016/j.scitotenv.2009.05.044 en none Elsevier |
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The investigation presented here was conducted during a wider experiment on the technical feasibility and environmental impacts of tire combustion in a Brazilian coal-fired power station. Nanometric-sized crystalline phases in fly ash were characterised using energy-dispersive X-ray spectrometer (EDS) and high-resolution transmission electron microscopy (HR-TEM) images. The nanoparticles, which register abundance peaks at 10 nm and 100 nm, include iron-rich oxide (e.g. hematite), Fe-sulphate (e.g., yavapaiite: KFe(SO4)2), and Fe-aluminumsilicate glass. Individual metalliferous nanoparticles have a heterogeneous microstructure in which elements such as iron, aluminum and silicon are not uniformly distributed. HR-TEM offers a powerful analytical technique in the study of fly ash nanoparticles, providing a better understanding of the detailed chemistry of this potentially strongly bioreactive component of atmospheric particulate matter. © 2009 Elsevier B.V. All rights reserved. |
| format |
artículo |
| author |
Silva, L.F.O. Moreno, Teresa Querol, Xavier |
| spellingShingle |
Silva, L.F.O. Moreno, Teresa Querol, Xavier An introductory TEM study of Fe-nanominerals within coal fly ash |
| author_facet |
Silva, L.F.O. Moreno, Teresa Querol, Xavier |
| author_sort |
Silva, L.F.O. |
| title |
An introductory TEM study of Fe-nanominerals within coal fly ash |
| title_short |
An introductory TEM study of Fe-nanominerals within coal fly ash |
| title_full |
An introductory TEM study of Fe-nanominerals within coal fly ash |
| title_fullStr |
An introductory TEM study of Fe-nanominerals within coal fly ash |
| title_full_unstemmed |
An introductory TEM study of Fe-nanominerals within coal fly ash |
| title_sort |
introductory tem study of fe-nanominerals within coal fly ash |
| publisher |
Elsevier |
| publishDate |
2009 |
| url |
http://hdl.handle.net/10261/63260 |
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