Microstructural Assessment of Magnetite Nanoparticles (Fe3O4) Obtained by Chemical Precipitation Under Different Synthesis Conditions

Autor: Luciana Barbosa Salviano, Thays Michelle da Silva Cardoso, Gabriela Cordeiro Silva, Maria Sylvia Silva Dantas, Angela de Mello Ferreira

Publikováno v: Materials Research, Vol 21, Iss 2 (2018)

Magnetite nanosized particles synthesis was achieved by two different routes. Assessment of microstructure was carried out aiming at comparing the outcome of synthesis parameters on the crystallinity, distribution of particle dimension and magnetic a

Externí odkaz: https://doaj.org/article/633dcfa0f5c44841ba73fd98dd000770

Galvanic effect of pyrite on arsenic release from arsenopyrite dissolution in oxygen-depleted and oxygen-saturated circumneutral solutions

Autor: Virginia S.T. Ciminelli, Claudia L. Caldeira, Maria Sylvia Silva Dantas, Erico T.F. Freitas, D. Majuste, P.M. Ferreira

Publikováno v: Journal of Hazardous Materials. 412:125236

Arsenopyrite (FeAsS), the most common arsenic-bearing mineral, is usually found associated with pyrite (FeS2) in gold mining tailings. This work examined the galvanic effect of FeS2 on As release from FeAsS oxidation in circumneutral media under oxyg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::853cc5bf9ce59fc8f0e84feb9e9d9628
https://doi.org/10.1016/j.jhazmat.2021.125236

Microstructural Assessment of Magnetite Nanoparticles (Fe3O4) Obtained by Chemical Precipitation Under Different Synthesis Conditions

Autor: Maria Sylvia Silva Dantas, Gabriela Cordeiro Silva, Thays Michelle da Silva Cardoso, Luciana Barbosa Salviano, Angela de Mello Ferreira

Publikováno v: Materials Research, Issue: ahead, Published: 15 FEB 2018
Materials Research, Vol 21, Iss 2 (2018)
Materials Research v.21 n.2 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 21, Issue: 2, Article number: e20170764, Published: 15 FEB 2018

Magnetite nanosized particles synthesis was achieved by two different routes. Assessment of microstructure was carried out aiming at comparing the outcome of synthesis parameters on the crystallinity, distribution of particle dimension and magnetic a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9d877d088abe18003c7aa75216a0428
https://doi.org/10.1590/1980-5373-mr-2017-0764

Selective adsorption of gold over copper cyanocomplexes on activated carbon

Autor: Maria Sylvia Silva Dantas, Carlos Henrique Medeiros de Souza, Virginia S.T. Ciminelli, D. Majuste

Publikováno v: Hydrometallurgy. :188-195

Copper cyanocomplexes have been recognized as competitors for the adsorption sites of activated carbon during gold adsorption. In this paper, the effects of practical parameters (excess free cyanide, calcium ions and aeration conditions) on the selec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72c4aa9f439fabb167a433b18ebf00bc
https://doi.org/10.1016/j.hydromet.2014.05.017

Raman and IR spectroscopic investigation of As adsorbed on Mn3O4 magnetic composites

Autor: Maria Sylvia Silva Dantas, Virginia S.T. Ciminelli, Fabiana S. Almeida, Gabriela C. Silva, Angela de Mello Ferreira

Publikováno v: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 100:161-165

Raman and IR spectra were recorded of the As-loaded Mn(3)O(4) magnetic composites obtained from the adsorption studies performed with As(III). XANES results for the composite after As(III) removal tests show that the As adsorbed is at the oxidized ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2d7567b1d71ae449236bfc94325d99e
https://doi.org/10.1016/j.saa.2012.04.061