Kinetics, equilibrium and thermodynamics studies on natural and heat treated clays for the removal of arsenate ions from aqueous solution

Characterization

The results in Fig. 1 illustrates the infrared spectral of natural, heat treated and heat-treated clay after arsenate adsorption. Spectrum of NAC showed a wide spike between 3287 and 3649 cm− 1 of O-H stretching vibration…

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