Surface and Interface properties of Benzethonium Chloride-Montmorillonite

S. T¨URKER,; F YARZA; S. YAPAR; R.M. TORRES SANCHEZ

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017

0927-7757

In this work, Montmorillonite (Mt) obtained from Tokat, Reşadiye region having 0.91mmol/g cation exchange capacity was modified by using Benzethonium Chloride (BZT).Organoclays, from Mt and BTZ, were prepared by using conventional and microwave heatingmethods and BTZ in amounts equivalent to 50%, 100% or 200% of CEC of clay. The sampleswere characterized by XRD, ATR-FTIR, SEM, Thermal analyses and Zeta Potentialmeasurements. Kinetic experiments revealed that adsorption kinetic of BTZ was very fastwhen the BTZ amount was less than 80% of CEC. The adsorption kinetics fitted to pseudosecond order kinetic model for BTZ amounts of 80% and 100 % CEC. Adsorption behavior ofBTZ on montmorillonite was explained by Sips isotherm model. XRD results indicated thatthe basal spacing of the clay increased up to 2.85 nm with increasing amount of BTZ and apseudo trimolecular layer formed in the interlayer. The results of Zeta potential measurementsand XRD analyses confirmed the distribution of BTZ between external and internal surfaces.