Carbon microspheres derived from walnut shell: Rapid and remarkable uptake of heavy metal ions, molecular computational study and surface modeling.
Adsorption
DFT
Heavy metals
Spherical carbon
adsorption mechanism
Journal
Chemosphere
ISSN: 1879-1298
Titre abrégé: Chemosphere
Pays: England
ID NLM: 0320657
Informations de publication
Date de publication:
Sep 2019
Sep 2019
Historique:
received:
11
04
2019
revised:
13
05
2019
accepted:
14
05
2019
pubmed:
28
5
2019
medline:
9
8
2019
entrez:
27
5
2019
Statut:
ppublish
Résumé
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
Identifiants
pubmed: 31129394
pii: S0045-6535(19)31026-4
doi: 10.1016/j.chemosphere.2019.05.120
pii:
doi:
Substances chimiques
Ions
0
Metals, Heavy
0
Carbon
7440-44-0
Types de publication
Journal Article
Langues
eng
Pagination
140-150Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.