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Vol. 36 No. 12 (2024): Vol 36 Issue 12, 2024

Copyright (c) 2024 mhamed hmamou, Ali Laghzal

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Determination of Surface Parameters of Iron(III) Hydroxide Sorbent

https://doi.org/10.14233/ajchem.2024.32465
M. Hmamou
Applied Chemistry Laboratory Materials, Faculty of Science, University Mohamed V, Rabat, Morocco; High Institute of Marines Fisheries, Agadir, Morocco; Organic and Physical Chemistry Laboratory, Faculty of Science, Ibn Zohr University, Agadir, Morocco
https://orcid.org/0000-0002-8925-8678
A. Laghzal
High Institute of Marines Fisheries, Agadir, Morocco; Organic and Physical Chemistry Laboratory, Faculty of Science, Ibn Zohr University, Agadir, Morocco
https://orcid.org/0000-0001-5204-3262

Corresponding Author(s) : M. Hmamou

hmamou1965@gmail.com

Asian Journal of Chemistry, Vol. 36 No. 12 (2024): Vol 36 Issue 12, 2024

Abstract

The surface layer parameters of iron(III) hydroxide were studied. The surface charge, the sorption of proton H+, hydroxyl OH– as a function of hydration time (TCT), the pH of the suspension solution and the sorbent concentration were presented. For this purpose, two methods were chosen: potentiometric mass titration (PMT) and potentiometric time titration (PTT). The concentrations suspensions used were 20, 40 and 60 g/L. The variations of surface charge with the time contact, Q = f(TCT) were examined for hydration time ranging from zero to 72 h. The isoelectric point (IEP) and point zero charge (PZC) were defined using the variations pH = f(TCT) resulting from protonation/deprotonating of surface sites >S–OH with derivative methods d(pH)/d(TCT) = f(pH) the values of PZC and IEP were found: PZC = 7.45 ± 0.1 and IEP = 7.65 ± 0.1.

Keywords

Iron hydroxide Potentiometric Adsorbent Surface charge Point zero charge Isoelectric point
Hmamou, M., & Laghzal, A. (2024). Determination of Surface Parameters of Iron(III) Hydroxide Sorbent. Asian Journal of Chemistry, 36(12), 2760–2764. https://doi.org/10.14233/ajchem.2024.32465
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