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Articles, 2 registres trobats
Articles 2 registres trobats  
1.
9 p, 558.5 KB XRD, FTIR, and thermal analysis of bauxite ore-processing waste (red mud) exchanged with heavy metals / Castaldi, Paola (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari) ; Silvetti, Margherita (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari) ; Santona, Laura (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari) ; Enzo, Stefano (Dipartimento di Chimica. University of Sassari) ; Melis, Pietro (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari)
The present work shows the results of X-ray diffraction (XRD), Fourier transform infrared (FTIR), and thermal analysis of untreated (RM) and acid-treated red mud (RM), a bauxite ore-processing waste, exchanged with Pb, Cd, and Zn cations. [...]
2008 - 10.1346/CCMN.2008.0560407
Clays and Clay Minerals, Vol. 56, Núm. 4 (2008) , p. 461-469  
2.
11 p, 766.6 KB X-ray diffraction and thermal analysis of bauxite ore-processing waste (red mud) exchanged with arsenate and phosphate / Castaldi, Paola (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari) ; Silvetti, Margherita (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari) ; Enzo, Stefano (Dipartimento di Chimica. University of Sassari) ; Deiana, Salvatore (University of Sassari. Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari)
The use of waste materials from mineral ore processing has much potential for immobilizing pollutants such as arsenic (As) in natural soils and waters. The purpose of the present study was to investigate red mud (RM, a finely textured bauxite-ore residue) as a sequestering agent for arsenate andphosphate, including characterization of the types of surface complexes formed. [...]
2011 - 10.1346/CCMN.2011.0590207
Clays and Clay Minerals, Vol. 59, Núm. 2 (2011) , p. 189-199  

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