Enhanced removal of naproxen from wastewater using silica magnetic nanoparticles decorated onto graphene oxide; parametric and equilibrium study |
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| Authors: | Mohammad Kazem Mohammadi Nodeh Morteza Radfard Liaquat Ali Zardari |
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| Affiliation: | 1. Water Quality Control Laboratory, Tehran Province Water &2. Wastewater Co., Tehran, Iran;3. Department Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran;4. Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan |
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| Abstract: | The present study describes the synthesis of silica and magnetic nanoparticle-decorated graphene oxide (GO-MNPs-SiO2) and its application as an adsorbent for the removal of naproxen from wastewater. Nanocomposite was characterized utilizing FT-IR spectroscopy, FESEM microscopy, EDX and XPS spectroscopy. Under the optimum conditions, a high adsorption capacity (31 mg g?1) was obtained toward naproxen at pH 5. The adsorption process was evaluated using isotherms; the Freundlich isotherm suggested a multilayer adsorption pattern for naproxen. Free energy confirmed a physisorption mechanism between naproxen and adsorbent. Lastly, the field application was performed in wastewater which obtained high removal efficiency percentages (83–94%). |
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| Keywords: | Silica magnetic nanoparticles graphene oxide non-steroidal anti-inflammatory pharmaceutical drug naproxen removal isotherms study |
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