Potential Application of Hexadecyltrimethyl Ammonium Bromide Modified Bentonite as Adsorbent for the Removal of Triclosan from Aqueous Medium
Keywords:
Adsorption kinetics, Thermodynamics, Bentonite, Triclosan, Personal care productsAbstract
In this study, the adsorption efficiency of hexadecyltrimethyl ammonium bromide modified bentonite (Bt-HDTMA) was assessed as a potential adsorbent for effective removal of triclosan from aqueous solution. Batch adsorption test was performed by varying contact time and temperature to assess their individual impacts on adsorption efficiency. Adsorption efficiency increased with time, until maximum adsorption was attained at 360 minutes adsorbent-adsorbate interaction time. The adsorption kinetic data were fitted into three different kinetic models namely: pseudo first order, pseudo second order and intraparticle diffusion model. Result indicated that the kinetic data were well described by the pseudo second order kinetic model with correlation coefficient (R2) value obtained as 0.988. Results from thermodynamic investigation indicated that the adsorption of triclosan from aqueous solution was spontaneous, endothermaic and a random process, due to the negative values obtained for Gibbs free energy (ΔG), and the positive values recorded for both enthalpy (ΔH) and entropy (ΔS). This result indicates that Bt-HDTMA is a very efficient adsorbent for removal of triclosan from aqueous medium. However, it can also serve as an excellent adsorbent for the removal of other personal care products and pharmaceutical from aqueous media.Downloads
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Copyright (c) 2025 Kelechi Emmanuel Onwuka, Christopher Ugochukwu Aghalibe, Okechukwu Chibuike Atasie, Williams Chinonso Okafor, Nnamdi Ekene Enenwa, Nnamdi Ekene Enenwa, Nnamdi Ekene Enenwa (Author)

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