Sorption of a Cationic Surfactant Benzyldimethyldo

Authors: Vincenzo Leone Pasquale Iovino

Publish Date: 2016/10/21

Volume: 227, Issue: 11, Pages: 409-

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Abstract

The presence of surfactants in groundwater and in drinking and superficial waters is a major public health concern Recently various treatment technologies have been studied to remove these pollutants among them the treatments based on the sorption onto natural adsorbing materials appear more ecofriendly and with very interesting removal efficiencies The sorption of the cationic surfactant benzyldimethyldodecyl ammonium chloride BDC12 onto zeolitic tuff Si/Al ratio = 24 was well described by a pseudosecondorder equation with a kinetic constant not depending on the exchangeable cationic form of the zeolite The isosteric enthalpies and entropies ∆istH and ∆istS obtained from sorption isotherms were negative and their absolute values increased with decreasing amounts of BDC12 bound at the equilibrium qe Zeolite sorbitivity qe/unit dry mass sorbent for BDC12 increased with NaCl concentration in the batch solution suggesting that the sorption process does not involve cation exchange

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