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- W2061884755 abstract "This work presents a valorization of a solid waste originating from an edible oil refinery called spent bleaching earth (SBE). The SBE material is first impregnated with an ammonium chloride solution (3 M), then treated directly in furnace at 400 °C during an hour followed by a washing in the cold by HCl 1 M. To elucidate the changes in its crystalline structure, induced by the regeneration method, the obtained material (RSBE) is characterized by several physicochemical methods (X-ray diffraction, FTIR, thermal analysis, BET and SEM). The characterization results show that the heat treatment in furnace and the chemical treatment (decomposition of NH4Cl) don’t affect the structure of montmorillonite of regenerated material (RSBE). The study of porous texture by the nitrogen adsorption technique at −196 °C shows that the specific surface area SBET and the pore volume increased in the RSBE material compared to those of virgin bleaching earth VBE (unused) and their values are respectively of 145.68 against 115.5 m2 g−1 and of 0.287 against 0.234 cm3 g−1. Calculations by the adsorption equations using BJH method, applied to both materials, show that the treatment generate an increase in the micropores in the RSBE material. We belonged the values of the micropores area of Smic = 41.98 cm2 g−1 and of Vmic = 0.074 cm3 g−1 for the volume." @default.
- W2061884755 created "2016-06-24" @default.
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- W2061884755 date "2011-08-01" @default.
- W2061884755 modified "2023-10-10" @default.
- W2061884755 title "Regeneration of a solid waste from an edible oil refinery" @default.
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- W2061884755 doi "https://doi.org/10.1016/j.ceramint.2011.02.016" @default.
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