Reduction of Oxidizable Pollutants in Waste Water from the Wadi El Bey River Basin Using Magnetic Nanoparticles as Removal Agents-Reference-Cited by-同舟云学术

Reduction of Oxidizable Pollutants in Waste Water from the Wadi El Bey River Basin Using Magnetic Nanoparticles as Removal Agents

Published:2023-06-14 Issue:6 Volume:9 Page:157
ISSN:2312-7481
Container-title:Magnetochemistry
language:en
Short-container-title:Magnetochemistry

Author:

Tlili Hajer¹²,Elaoud Anis²³^ORCID,Asses Nedra²,Horchani-Naifer Karima¹^ORCID,Ferhi Mounir¹^ORCID,Goya Gerardo F.⁴⁵^ORCID,Fuentes-García Jesús Antonio⁴⁵^ORCID

Affiliation:

1. Laboratory of Physico-Chemistry of Mineral Materials and Their Applications, National Center for Research in Materials Sciences CNRSM, Technopole Borj Cedria, P.O. Box 73, Soliman 8027, Tunisia

2. Higher Institute of Environmental Sciences and Technologies, Carthage University, P.O. Box 1003, Hammam-Lif 2050, Tunisia

3. Laboratory of Probability and Statistics, Mathematic Department, Faculty of Sciences Sfax, University of Sfax, Road of Soukra Km 4, P.O. Box 1171, Sfax 3000, Tunisia

4. Departamento de Física de la Materia Condensada, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain

5. Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC—Universidad de Zaragoza, Campus Río Ebro, 50018 Zaragoza, Spain

Abstract

Many of the current strategies for removing pollutants from water are based on nanomaterials and nanotechnology. Lower values of Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) in water results in reduction in the amount of oxidizable pollutants. We present a study on the reduction of COD and BOD5 in water from Wadi El Bey River (Tunisia), using magnetite nanoparticles (MNPs) and magnetic fields. The COD and BOD5 removal reached values higher than 50% after 60 min, with optimum efficiency at pH values of ≈8 and for MNPs concentrations of 1 g/L. The use of a permanent magnetic field (0.33 T) showed an increase of COD and BOD5 removal from 61% to 76% and from 63% to 78%, respectively. This enhancement is discussed in terms of the MNPs coagulation induced by the magnetic field and the adsorption of ionic species onto the MNPs surface due to Fe3O4 affinity.

Funder

European Union “NextGenerationEU”/PRTR”

Publisher

MDPI AG

Subject

Materials Chemistry,Chemistry (miscellaneous),Electronic, Optical and Magnetic Materials

Link

https://www.mdpi.com/2312-7481/9/6/157/pdf

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