Organically modified sodium montmorillonite for enhanced adsorption of xylenol orange from aqueous solutions: kinetic, thermodynamic, and mechanistic study.

Xylenol orange (XO) is a persistent anionic azo dye that resists conventional treatment. Cetyltrimethylammonium bromide (CTAB) and binding poly (vinylpyrrolidone) (PVP) were sequentially intercalated onto Na-montmorillonite (NaMt) to prepare a CTAB/P…

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