Enhancement of Cerium Sorption onto Urea-Functionalized Magnetite Chitosan Microparticles by Sorbent Sulfonation-Application to Ore Leachate.
bi-functionalization
cerium recovery
cerium recovery from processed leachate
magnetic chitosan
metal desorption and sorbent recycling
sorption isotherm
uptake kinetics
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
04 Nov 2022
04 Nov 2022
Historique:
received:
17
10
2022
revised:
28
10
2022
accepted:
02
11
2022
entrez:
11
11
2022
pubmed:
12
11
2022
medline:
15
11
2022
Statut:
epublish
Résumé
The recovery of strategic metals such as rare earth elements (REEs) requires the development of new sorbents with high sorption capacities and selectivity. The bi-functionality of sorbents showed a remarkable capacity for the enhancement of binding properties. This work compares the sorption properties of magnetic chitosan (MC, prepared by dispersion of hydrothermally precipitated magnetite microparticles (synthesized through Fe(II)/Fe(III) precursors) into chitosan solution and crosslinking with glutaraldehyde) with those of the urea derivative (MC-UR) and its sulfonated derivative (MC-UR/S) for cerium (as an example of REEs). The sorbents were characterized by FTIR, TGA, elemental analysis, SEM-EDX, TEM, VSM, and titration. In a second step, the effect of pH (optimum at pH 5), the uptake kinetics (fitted by the pseudo-first-order rate equation), the sorption isotherms (modeled by the Langmuir equation) are investigated. The successive modifications of magnetic chitosan increases the maximum sorption capacity from 0.28 to 0.845 and 1.25 mmol Ce g
Identifiants
pubmed: 36364388
pii: molecules27217562
doi: 10.3390/molecules27217562
pmc: PMC9653577
pii:
doi:
Substances chimiques
Chitosan
9012-76-4
Ferrosoferric Oxide
XM0M87F357
Cerium
30K4522N6T
Urea
8W8T17847W
Ferric Compounds
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : National Natural Science Foundation of China
ID : U1967218
Organisme : National Natural Science Foundation of China
ID : 11975082
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