Details

Autor(en) / Beteiligte

• Chenarani, Bentolhoda
• Rahnama Haratbar, Pouran
• Ghaemi, Ahad

Titel

Removal of diclofenac sodium pollutant from drug contaminants using a hyper-cross-linked polymer adsorbent

Ist Teil von

• Iranian polymer journal, 2022-11, Vol.31 (11), p.1459-1473

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The presence of diclofenac sodium (DCF) in wastewater, groundwater, and even in drinking water has raised global concerns due to its damaging effects on human health and aquatic life. In this work, the expanded polystyrene-based hyper-cross-linked polymer (EPS-HCP) adsorbent was synthesized for diclofenac sodium (DCF) adsorption from an aqueous solution using expanded polystyrene (EPS) and Friedel−Crafts reaction. Characteristics of the EPS-HCP adsorbent were studied by using FTIR, FESEM, BET, TGA, and XRD analyses. The surface area and thermal stability were obtained as 802.84 m 2 /g and 450 °C, respectively. The response surface method (RSM) was applied to optimize the parameters to specify the highest feasible DCF removal efficiency and adsorption capacity of EPS-HCP adsorbent. Furthermore, data obtained from the experiments were fitted using the adsorption isotherm and kinetic models for evaluating the behavior of the adsorbent. The results illustrated that the adsorption isotherm data were well fitted by the Dubinin-Radushkevich model, whereas the adsorption kinetics pursued the pseudo-second-order kinetic model. The optimum values of temperature, initial DCF concentration, and contact time (parameters of RSM) for the maximum removal efficiency and adsorption capacity of DCF (responses of RSM) were 25 °C, 50 mg/L, and 44.6 min, respectively. The optimized values of adsorption capacity and removal efficiency of DCF using EPS-HCP adsorbent were obtained as 122.4 mg/g and 98.0%, respectively. Graphical abstract