2026-06-01T19:50:23Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/249022026-02-03T12:28:47Zcom_10630_2254col_10630_37959

Phosphorus remediation using a new magnetic system in aqueous samples Morales-Benítez, Irene García-Muñoz, Ana María Montoro-Leal, Pablo García-Mesa, Juan Carlos López-Guerrero, María del Mar Vereda-Alonso, Elisa Isabel Fósforo Magnetismo Phosphorus is a natural element that can be found in soils and aquatic ecosystems. Its presence over the recommended concentration, damages the hydrosphere equilibrium, through eutrophication. Consequently, there is a strict environmental regulation that limits the concentration of this element in waste water. Currently, Wastewater Treatment Plants (WWTP) reduce the concentration of phosphorus in water using physical-chemical and biological treatments, which presents several disadvantages. For physical-chemical treatments are the increase of costs and water volume, as well as the disqualification of the water for further agricultural uses; for biological treatments the main disadvantages are the non-stable conversion yields, becoming necessary a combination with physical-chemical treatments. In this work, a wastewater treatment process has been developed to remove phosphorous by adsorption on a patented nanomaterial, M@GO, which combines both excellent adsorption properties of graphene oxide and magnetic nanoparticles and presents a good compromise between adsorbent properties, easy use and low toxicity. M@GO has a high surface area which allows the rapid removal of phosphorus, moreover the material is easily removed and re-used using a magnetic field. The kinetics of the process have been studied, showing a good approximation to the Langmuir's theoretical model. The magnetic adsorption procedure has shown a performance of 50% in 30 min for the elimination of phosphorus, with a dosage of 0.8 g/L of M@GO in a wastewater with an initial concentration of 0.918 mg/L of phosphorus. Once the kinetic parameters and the mathematical expression that relate them have been obtained, the scale has been proposed at a semi-industrial level. Acknowledgements The authors thank “Proyecto Prueba de Concepto E30521, Plan Propio, Universidad de Málaga” for financially supporting this study. 2022-09-06T07:33:13Z 2022-09-06T07:33:13Z 2022-09-06T07:33:13Z 2022-08 conference output https://hdl.handle.net/10630/24902 eng Euchems 2022 Lisboa 28/08/2022-01/09/2022 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional