Cited by 75Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsHeavy Metal Pollution Remediation

The DOI matches its Crossref record; 57 of the 61 references it cites were found in a registry or an index.

Carbon microspheres derived from walnut shell: Rapid and remarkable uptake of heavy metal ions, molecular computational study and surface modeling

Open access
Zbair, Mohamed, Ait Ahsaine, Hassan, Anfar, Zakaria, Slassi, Amine·2019·Chemosphere

Abstract

Carbon microspheres were synthesized under nitrogen flow from walnut shells (WS) and then used as an adsorbent for the removal of Pb (II), Cu(II), Cr(III) and Cd(II) metals. The prepared material was characterized using X-ray photoelectron spectroscopy, scanning electron microscopy, Brounauer-emett-teller surface, Fourier transform infrared and Raman spectroscopy. SEM micrographs showed homogenous sphere-like structure with an average diameter of 4.55 μm. The prepared carbon microspheres exhibit selective and rapid removal of hazardous metals from synthetic water samples. The effects of solution pH, contact time and temperatures on the removal process have been systematically investigated. The material used in this present work present the highest adsorption capacities ever reported for Cr(III), Pb(II), Cd(II) and Cu(II) at an optimum pH of 5, the adsorption capacities reached 792, 638, 574 and 345 mg g-1 for Cr(III), Pb(II), Cd(II) and Cu(II), respectively. Density functional calculations (DFT) showed an agreement with the adsorption process results, Cr(III) had stronger binding ability to the OH and/or COOH functional groups followed by Pb, Cu and Cd. The adsorption mechanism was discussed based on the experimental and theoretical results. Finally, the response surface methodology was used to optimize the adsorption conditions.

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Crossref · 10.1016/j.chemosphere.2019.05.120

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4 of the 61 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Fawell, 1996, Chromium in drinking-water. Heal. Criteria other support. Information, World heal, Organ, 2, 1
  2. Nguyen, 2017, Activated carbon based on spherical hydrochar functionalized with triethylenetetramine: synthesis, characterizations, and adsorption application, Green Process. Synth.
  3. WHO, 2003, Iron in drinking-water background document for development of WHO guidelines for drinking-water quality, World Health Organ. Guidel., 2, 1

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Metadata

Authors
Zbair, M., Ait Ahsaine, H., Anfar, Z., & Slassi, A.
Affiliations
  • Chouaib Doukkali University (MA)
  • Université Ibn Zohr (MA)
  • University of Mons (BE)
Corresponding author
Zbair, Mohamed
Venue
Chemosphere
Publisher
Elsevier BV
Published
2019-09
Volume
231
Pages
140-150
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2945354467
Cited by
73
References
61
Citations by year
2026: 7 · 2025: 13 · 2024: 8 · 2023: 9 · 2022: 9 · 2021: 8 · 2020: 16 · 2019: 3
FWCI
3.26
Type
journal article
Language
en
Open access
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • King Abdullah University of Science and Technology Repository (King Abdullah University of Science and Technology) (submittedVersion, cc-by-nc-nd)
Funders
Ibn Zohr University, faculty of science, Agadir, Morocco
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
Keywords
carbon microspheres, walnut shell, heavy metal adsorption, lead removal, copper removal, chromium removal, cadmium removal, adsorption capacity, adsorption mechanism, DFT calculations, response surface methodology, biosorbent, water treatment, pH effect
MeSH terms
Adsorption, Carbon, Ions, Microscopy, Electron, Scanning, Microspheres, Models, Chemical, Metals, Heavy, Juglans

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