This study reports the analysis of diclofenac removal from aqueous solution using a novel adsorbent coating. This adsorbent coating was formulated using acrylic polymer emulsion, smectite-based clay powder and epichlorohydrin-dimethylamine in a layer form via the implementation of a facile synthesis method. SEM, EDX and FTIR analysis were carried out for the characterization of this novel adsorbent. The effect of adsorbent composition, diclofenac concentration, temperature and solution pH on the pharmaceutical removal with adsorbent coating was studied and modeled. Results showed that 303 K and pH 3 were the best conditions to improve the diclofenac adsorption obtained a adsorption capacity of 25.59 mg/g. Adsorption isotherms and kinetics were quantified and modeled, and the corresponding adsorption mechanism was also analyzed. Diclofenac adsorption with this novel material was exothermic and spontaneous. This alternative adsorbent is promising for diclofenac removal from industrial wastewater systems.
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