High extent mass recovery of alginate hydrogel beads network based on immobilized bio-sourced porous carbon@Fe3O4-NPs for organic pollutants uptake

Zakaria Anfar; Abdallah Amedlous; Abdellah Ait El Fakir; Mohamed Zbair; Hassan Ait Ahsaine; Amane Jada; Noureddine El Alem

doi:10.1016/j.chemosphere.2019.124351

High extent mass recovery of alginate hydrogel beads network based on immobilized bio-sourced porous carbon@Fe₃O₄-NPs for organic pollutants uptake

Chemosphere. 2019 Dec:236:124351. doi: 10.1016/j.chemosphere.2019.124351. Epub 2019 Jul 18.

Authors

Zakaria Anfar¹, Abdallah Amedlous², Abdellah Ait El Fakir³, Mohamed Zbair⁴, Hassan Ait Ahsaine⁵, Amane Jada⁶, Noureddine El Alem⁷

Affiliations

¹ Materials and Environment Laboratory, Ibn Zohr University, Agadir, 8000, Morocco; Mulhouse Materials Science Institute, CNRS, University Haute Alsace, F-68100, Mulhouse, France; University of Strasbourg, Strasbourg, F-67081, France. Electronic address: zakaria.anfar@gmail.com.
² Université Hassan II, Laboratoire de Matériaux, Catalyse & Valorisation des Ressources Naturelles, URAC 24, Faculté des Sciences et Techniques, Casablanca, B.P. 146, 20650, Morocco.
³ Materials and Environment Laboratory, Ibn Zohr University, Agadir, 8000, Morocco; Mulhouse Materials Science Institute, CNRS, University Haute Alsace, F-68100, Mulhouse, France.
⁴ Laboratory of Catalysis and Corrosion of Materials, Chouaib Doukkali University, El Jadida, 24000, Morocco.
⁵ Materials and Environment Laboratory, Ibn Zohr University, Agadir, 8000, Morocco. Electronic address: a.hassan@uiz.ac.ma.
⁶ Mulhouse Materials Science Institute, CNRS, University Haute Alsace, F-68100, Mulhouse, France; University of Strasbourg, Strasbourg, F-67081, France. Electronic address: amane.jada@uha.fr.
⁷ Materials and Environment Laboratory, Ibn Zohr University, Agadir, 8000, Morocco.

PMID: 31545185
DOI: 10.1016/j.chemosphere.2019.124351

Abstract

This work goes inside the understanding of organic pollutants adsorption mechanism over network alginate hydrogel beads based on immobilized bio-sourced PC@Fe₃O₄-NPs (PC@Fe₃O₄-NPs@Alginate) and highlights its high extent mass recovery in aqueous media. The samples were successfully synthesized, we previously developed porous carbon (PC), which, was used to elaborate PC@Fe₃O₄-NPs via simple in situ coprecipitation (PC@ Fe₃O₄-NPs), which was encapsulated by alginate-Ca²⁺ via the blend crosslinking method. The structural, textural, chemical and morphological proprieties of as prepared materials were studied by XRD, FTIR, Raman spectroscopy, nitrogen adsorption-desorption, XPS, SEM and TEM. The adsorption kinetic and isotherm data were well fitted to the pseudo-second-order and Langmuir models. Magnetic particles exhibited an excellent ability to adsorb methylene blue (MB) from aqueous solutions with maximum MB adsorption capacity of 180.42 mg g^-1 (PC@Fe₃O₄ NPs powder) and 49.66 mg g^-1 (beads based PC@Fe₃O₄-NPs@Alginate). Response surface methodology was used to optimize the removal efficiency of MB from aqueous solution and optimum parameters were determined. Magnetic beads based PC showed good magnetic propriety, long-term stability, regeneration capabilities and high extent mass recovery.

Keywords: Beads; Carbon; Dyes; Fe(3)O(4)-NPs; Magnetic particles; RSM.

MeSH terms

Adsorption
Alginates / chemistry*
Environmental Pollutants / analysis*
Environmental Restoration and Remediation / methods*
Hydrogels / chemistry*
Hydrogen-Ion Concentration
Magnetite Nanoparticles / chemistry*
Methylene Blue / analysis*
Porosity
Water / chemistry

Substances

Alginates
Environmental Pollutants
Hydrogels
Magnetite Nanoparticles
Water
Methylene Blue