Single and multi-component adsorptive removal of bisphenol A and 2,4-dichlorophenol from aqueous solutions with transition metal modified inorganic–organic pillared clay composites: Effect of pH and presence of humic acid

[Display omitted] •Metal modified inorganic–organic pillared clay composite beds were prepared.•Near neutral pH results in better phenols adsorption capacity.•Beds exhibited remarkable selectivity toward bisphenol A.•Simultaneous feed of phenols resulted in competitive adsorption.•Synergistic effect...

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Bibliographic Details
Published in:	Journal of hazardous materials 2016-07, Vol.312, p.262-271
Main Authors:	Ortiz-Martínez, Krisiam, Reddy, Pratap, Cabrera-Lafaurie, Wilman A., Román, Félix R., Hernández-Maldonado, Arturo J.
Format:	Article
Language:	eng
Subjects:	Adsorbents Adsorption Bisphenol A Clay (material) Competitive adsorption Fixed beds Humic acid Hydroxyapatite Inclusions Phenolic compounds Surfactants Transition metals
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Summary:	[Display omitted] •Metal modified inorganic–organic pillared clay composite beds were prepared.•Near neutral pH results in better phenols adsorption capacity.•Beds exhibited remarkable selectivity toward bisphenol A.•Simultaneous feed of phenols resulted in competitive adsorption.•Synergistic effect between humic acid and beds improved overall phenols adsorption. Pillared clay based composites containing transition metals and a surfactant, namely MAlOr-NaBt (Bt=bentonite; Or=surfactant; M=Ni2+, Cu2+or Co2+), were prepared to study selectivity and capacity toward single and multiple-component adsorption of bisphenol A (BPA) and 2,4-diclorophenol (DCP) from water. Tests were also performed to account for the presence of natural organic matter in the form of humic acid (HA). Equilibrium adsorption capacities for single components increased as follows: NaBt
ISSN:	0304-3894 1873-3336