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Use of steel slag to neutralize acid mine drainage (AMD) in sulfidic material from a uranium mine Rev. Bras. Ciênc. Solo
Leite,Camila Marcon de Carvalho; Cardoso,Luisa Poyares; Mello,Jaime Wilson Vargas de.
Acid Mine Drainage (AMD) is one of the main environmental impacts caused by mining. Thus, innovative mitigation strategies should be exploited, to neutralize acidity and prevent mobilization of trace elements in AMD. The use of industrial byproducts has been considered an economically and environmentally effective alternative to remediate acid mine drainage. Therefore, the objective of this study was to evaluate the use of steel slag to mitigate acid mine drainage in a sulfidic material from a uranium mine, as an alternative to the use of limestone. Thus, increasing doses of two neutralizing agents were applied to a sulfidic material from the uranium mine Osamu Utsumi in Caldas, Minas Gerais State. A steel slag from the company ArcelorMittal Tubarão and a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acid mine waters; Trace element mobilization; Waste reuse; Global warming.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300027
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Soil-applied Zn effect on soil fractions Scientia Agricola
Leite,Camila Marcon de Carvalho; Muraoka,Takashi; Colzato,Marina; Alleoni,Luís Reynaldo Ferracciú.
ABSTRACT The interaction of Zn with soil compartments influences its bioavailability and uptake by plants. In this study, rice and soybean were cultivated under greenhouse conditions with the aim of evaluating Zn bioavailability and fractionation in a clayey-textured Typic Hapludox as a function of Zn rates (4 or 8 mg kg –1 Zn). The experiment was conducted until grain filling. Two soil subsamples (t 1 and t 2 ) that referred to the seeding and flowering stages, were collected and compared with two single extraction schemes, DTPA (Zn DTPAt1 and Zn DTPAt2 ) and Mehlich-1 (Zn Mt1 and Zn Mt2 ) for Zn available contents. Zn fractionation was carried out with t 2 soil subsamples for the testing of the following fractions: exchangeable Zn (Zn Exc ), Zn bound to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DTPA; Mehlich-1; Soil phases; Soil chemistry; Micronutrient.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000201400
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