M(II)-Al-Fe layered double hydroxides synthesized from aluminum saline slag wastes and catalytic performance on cyclooctene oxidation

Santamarı́a, L.; García, L. Oliveira; Faria, Emerson H. de; Ciuffi, Kátia J.; Vicente, Miguel Á.; Korili, S.A.; Gil, Antonio

doi:10.1016/j.mineng.2022.107516

Cited by 5 publications

(1 citation statement)

References 40 publications

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“…According to the European Normative [11], salt cake is considered hazardous waste. Several valorization procedures were proposed, among which the following stand out: (a) its direct use as an adsorbent [12][13][14] or (b) extraction of aluminum [4,5,9] and its subsequent use in the preparation of Al 3+ -based materials such as alumina [15], zeolites [7,16], or layered double hydroxides (LDHs) [8,[17][18][19][20], among others.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Ca2Al1–mFem(OH)6Cl·2H2O-Doped Hydrocalumites and Application of Their Derived Mixed Oxides in the Photodegradation of Ibuprofen

et al. 2022

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Aluminum from saline slags generated during the recycling of this metal, extracted under reflux conditions with aqueous NaOH, was used in the synthesis of hydrocalumite-type solids with the formula Ca2Al1–mFem(OH)6Cl·2H2O. The characterization of the obtained solids was carried out by powder X-ray diffraction, infrared spectroscopy, thermal analysis, element chemical analysis, N2 adsorption-desorption at −196 °C and electron microscopy. The results showed the formation of Layered Double Hydroxide-type compounds whose characteristics varied as the amount of incorporated Fe3+ increased. These solids were calcined at 400 °C and evaluated for the catalytic photodegradation of ibuprofen, showing promising results in the elimination of this drug by advanced oxidation processes. The CaAl photocatalyst (without Fe) showed the best performance under UV light for the photodegradation of ibuprofen.

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