Adsorptive remediation of naproxen from water using in-house developed hybrid material functionalized with iron oxide

Made available in DSpace on 2022-04-28T19:48:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01 Every year, a considerable volume of medications is consumed. Because these medications are not entirely eliminated in the sewage treatment plants and impact the surface waterways, the environmental pollution problem arises. This study objective was to evaluate the possibility of using an absorbent material made with of polyethylene terephthalate and sugarcane bagasse ash functionalized with iron oxide (PETSCA/Fe3+) in the removal of naproxen from water. The feasibility of having viable features in becoming an efficient adsorbent was first determined. The batch test was performed, allowing the dose effect, adsorption kinetics, and isotherm models to be evaluated. The determination of naproxen (NAP) concentration in water was analyzed on a high-performance liquid chromatograph and Langmuir method best represented the adsorption isotherm model. PETSCA/Fe3+ adsorbent material demonstrated potential in the naproxen removal at a low cost. The batching process was satisfactory, with 0.30 g of composite being the optimum fit for the system. The adsorption kinetics was determined and described by the pseudo second order model, with an average correlation coefficient (R2) of 0.974. The adsorption system model was best represented by the Langmuir isotherm curve. Moreover, adsorption in the presence of H2O2 had a positive impact on the process, removing 81.9% of NAP, whereas the process without H2O2 did not remove more than 62.0% of NAP. Therefore, because of its good qualities for NAP removal, PETSCA/Fe3+ is recommended as adsorbent material, primarily in small-volume water filtration systems. School of Engineering São Paulo State University (UNESP), Ave. Brasil Sul, Number 56, ZIP Code 15385-000 Brazil University, Street Carolina Fonseca, Number 584, ZIP Code 08230-030 Graduate Program in Process Engineering Tiradentes University, Ave. Murilo Dantas, Number 300, ZIP Code 49032-490 Institute of Technology and Research, Ave. Murilo Dantas, 300, Farolândia Department of Engineering School of Science and Technology Nottingham Trent University Waste Re-processing Division CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg Department of Botany School of Life Sciences Guru Ghasidas Vishwavidyalaya (A Central University) School of Engineering São Paulo State University (UNESP), Ave. Brasil Sul, Number 56, ZIP Code 15385-000