Cited by 63Adsorption and biosorption for pollutant removalPharmaceutical and Antibiotic Environmental ImpactsEnvironmental remediation with nanomaterials

Sulfamethoxazole Removal from Drinking Water by Activated Carbon: Kinetics and Diffusion Process

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BIZI, Mohamed·2020·Molecules

Abstract

Sulfamethoxazole (SMX), a pharmaceutical residue, which is persistent and mobile in soils, shows low biodegradability, and is frequently found in the different aquatic compartments, can be found at very low concentrations in water intended for human consumption. In conditions compatible with industrial practices, the kinetic reactivity and performance of tap water purification using activated carbon powder (ACP) are examined here using two extreme mass ratios of SMX to ACP: 2 µg/L and 2 mg/L of SMX for only 10 mg/L of ACP. In response to surface chemistry, ACP texture and the intrinsic properties of SMX in water at a pH of 8.1, four kinetic models, and two monosolute equilibrium models showed a total purification of the 2 µg/L of SMX, the presence of energetic heterogeneity of surface adsorption of ACP, rapid kinetics compatible with the residence times of industrial water treatment processes, and kinetics affected by intraparticle diffusion. The adsorption mechanisms proposed are physical mechanisms based mainly on π–π dispersion interactions and electrostatic interactions by SMX−/Divalent cation/ArO− and SMX−/Divalent cation/ArCOO− bridging. Adsorption in tap water, also an innovative element of this study, shows that ACP is very efficient for the purification of very slightly polluted water.

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  1. [32]Boehm H.P. Chemical Identification of Surface Groups, Advances in Catalysis Eley D.D. Pines H. Weisz P.B. Academic Press New York, NY, USA 1966 Volume 16 179 274
  2. [49]Mular A.L. Roberts R.B. A Simplified method to determine isoelectric points of oxides Trans. Can. Inst. Min. Metall. 1966 69 438 439

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Authors
BIZI, M.
Affiliations
Bureau de Recherches Géologiques et Minières (FR)
Corresponding author
BIZI, Mohamed
Venue
Molecules
Publisher
MDPI AG
Published
2020-10-13
Volume
25
Issue
20
Pages
4656
ISSN
1420-3049 (ISSN-L)
OpenAlex
W3093135396
Cited by
62
References
52
Citations by year
2026: 14 · 2025: 14 · 2024: 13 · 2023: 9 · 2022: 11 · 2021: 1
FWCI
1.61
Type
journal article
Language
en
Open access
Locations
  • Molecules (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
sulfamethoxazole, powdered activated carbon, pharmaceutical removal, drinking water treatment, adsorption kinetics, intraparticle diffusion, adsorption isotherms, π-π stacking, electrostatic interactions, surface heterogeneity
MeSH terms
Adsorption, Charcoal, Diffusion, Hydrogen-Ion Concentration, Kinetics, Particle Size, Sulfamethoxazole, Waste Disposal, Fluid, Water Pollutants, Chemical, Water Purification, Drinking Water

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