Amphoteric Adsorbent Coating For Pharmaceutical Waste (Diclofenac Sodium) Removal
Loading...
Date
2021-06-01
Authors
Abdul Taib, Muhammad Haziq
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The removal of diclofenac sodium (DCF) using a novel amphoteric absorbent coating
(AAC) has been presented by this thesis. The formulation of the adsorbent was through a
formation of a layer on the surface of a cotton cloth through facile method application using
acrylic polymer emulsion (APE), smectite-based clay powder, and cationic polyelectrolyte
(EPIDMA). SEM and EDX analysis were conducted for the characterization of the adsorbent
coating. The experiments were carried out to study the effect of EPIDMA dosage,
concentration, contact time, temperature, and pH of DCF solution on the removal efficiency of
the DCF. The optimized percentage removal of DCF is at 77.06% at DCF concentration of 50
mg/L, temperature of 30°C and pH of 3 for 5 hours. Adsorption isotherms were developed to
study the adsorption mechanism of the adsorption. This study has shown that the
aforementioned parameters influence the performance of the AAC for DCF removal. With high
removal efficiency and reusability, AAC was found to be a promising adsorbent for DCF
removal from pharmaceutical wastewater system.