Zobrazeno 1 - 10
of 58
pro vyhledávání: '"D. Majuste"'
Publikováno v:
Journal of Materials Research and Technology, Vol 22, Iss , Pp 2062-2077 (2023)
Fluoride (F−) impurity at 20 mg L−1 in the zinc sulphate electrolyte increased by 73% and 98% the corrosion rate of Al-1050 and Al-1070 alloys, respectively, which are used as cathode in zinc electrowinning process. The addition of aluminium ions
Externí odkaz:
https://doaj.org/article/5e4ae544e3524b338e465f9dc1b586ee
Publikováno v:
Hydrometallurgy. 215:105970
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d1a2c5c46360100a63ef89af4580535
https://doi.org/10.1016/j.hydromet.2022.105970
https://doi.org/10.1016/j.hydromet.2022.105970
Autor:
Ruberlan Gomes Silva, Virginia S.T. Ciminelli, Leandro Augusto Viana Teixeira, D. Majuste, Angela Nair Avelar
Publikováno v:
Mining, Metallurgy & Exploration. 36:235-244
Rare earth elements are essential for modern life products and green technologies. Recent supply constraints have boosted the development of rare earth projects after the price peak of 2011. The feasibility of a project depends on the definition of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82546a48ff79a6b3109c380557a6c880
https://doi.org/10.1007/s42461-018-0035-5
https://doi.org/10.1007/s42461-018-0035-5
Publikováno v:
Process Safety and Environmental Protection. 120:107-117
This paper describes a detailed chemical characterization of connector pins separated from diverse electronic components removed from waste printed circuit boards (WPCB) of computers. Chemical maps by SEM-EDS (Scanning Electron Microscopy - Energy Di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38b1f0bea3c18db6f58e77d661f25bdd
https://doi.org/10.1016/j.psep.2018.09.002
https://doi.org/10.1016/j.psep.2018.09.002
Autor:
Clóvis Henrique Leite de Souza, Virginia S.T. Ciminelli, Maria Sylvia Silva Dantas, D. Majuste
Publikováno v:
Hydrometallurgy. 176:78-86
This paper describes the effect of zinc ions on copper speciation and adsorption on activated carbon in solutions with varied cyanide levels and containing calcium. Batch and column adsorption experiments were carried out under atmospheric conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e972c695b8a2aaea0ddd2d454a9ad8f5
https://doi.org/10.1016/j.hydromet.2018.01.012
https://doi.org/10.1016/j.hydromet.2018.01.012
Autor:
N.C. Pissolati, D. Majuste
Publikováno v:
Hydrometallurgy. 175:193-202
The current paper describes the effect of key operating variables (i.e. pH, presence of sodium sulfate, boric acid and sodium lauryl sulfate – SLS) on important features of nickel deposits by means of morphologic and surface roughness analyses and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18208e95a934a8464fe2fe0c36bfa78b
https://doi.org/10.1016/j.hydromet.2017.11.012
https://doi.org/10.1016/j.hydromet.2017.11.012
Autor:
N.G.S. Almeida, Virginia S.T. Ciminelli, D. Majuste, P.R. Cetlin, S.L.S.P. Rezende, F.M. Teixeira, N.H.J. Freire
Publikováno v:
Hydrometallurgy. 204:105701
This work describes the stripping behavior of zinc cathodes with focus on the effect of current density, fluoride ion concentration in the electrolyte and acidity on their adherence to the aluminum blanks. The adhesion strength was measured using a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2e2b0db2364311938580e1736476a62
https://doi.org/10.1016/j.hydromet.2021.105701
https://doi.org/10.1016/j.hydromet.2021.105701
Publikováno v:
Hydrometallurgy. 169:112-123
The present work describes the effects of certain organic compounds used in industrial operations on nickel electrowinning and product quality. The organic compounds tested here consisted of a commercial extractant (Cyanex 272), a diluent (Escaid 110
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a40648c3c35cc758b0f543e115a9875
https://doi.org/10.1016/j.hydromet.2016.12.009
https://doi.org/10.1016/j.hydromet.2016.12.009
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
https://doi.org/10.1016/j.jhazmat.2021.125236
Publikováno v:
Hydrometallurgy. 201:105572
The selective cementation of cadmium, cobalt, and nickel from synthetic and an industrial zinc sulfate (150–160 g.L−1) electrolyte was investigated. The desired cadmium removal (from 640 to 740 mg.L−1 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02e4da5675b1a32abec1783ef283f7e4
https://doi.org/10.1016/j.hydromet.2021.105572
https://doi.org/10.1016/j.hydromet.2021.105572