Fabrication of Polyaluminium Ferric Sulfate from Bauxite Residue for Efficient Removal of Cr(VI) from Simulated Wastewater.
Acid leaching
Bauxite residue
Cr(VI)
Resources recycling
Wastewater treatment
Journal
Bulletin of environmental contamination and toxicology
ISSN: 1432-0800
Titre abrégé: Bull Environ Contam Toxicol
Pays: United States
ID NLM: 0046021
Informations de publication
Date de publication:
Jul 2022
Jul 2022
Historique:
received:
08
12
2021
accepted:
17
02
2022
pubmed:
20
3
2022
medline:
22
7
2022
entrez:
19
3
2022
Statut:
ppublish
Résumé
Bauxite residue is generated from alumina production in the alumina refining industry by the Bayer process, which requires a large amount of land resource and causes serious environmental problems. In this paper, a novel recycling strategy is proposed to rehabilitate the land and produce the polyaluminium ferric sulfate (PAFS) and siliceous gypsum byproducts from the bauxite residue. The batch experiments reveal that the maximum Cr(VI) removal efficiency of as-prepared PAFS can reach 95.80% with an initial concentration of 10.41 mg/L. In addition, the non-toxic siliceous gypsum should be an ideal raw material for cement plants. Various characterizations (e.g., SEM, FTIR, and XRD) are employed to reveal the mechanism of synthesis PAFS and their Cr(VI) removal performance. Consequently, this paper provides a deep insight into the utilization of bauxite residue as a resource and gives a new strategy for preparing PAFS and gypsum from bauxite residue.
Identifiants
pubmed: 35305129
doi: 10.1007/s00128-022-03494-7
pii: 10.1007/s00128-022-03494-7
doi:
Substances chimiques
Ferric Compounds
0
Waste Water
0
Chromium
0R0008Q3JB
chromium hexavalent ion
18540-29-9
ferric sulfate
3HWS7HF5XD
Aluminum Oxide
LMI26O6933
Calcium Sulfate
WAT0DDB505
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
142-148Subventions
Organisme : Hunan Provincial Key Research Plan Program of China
ID : 2021GK4059
Organisme : Hunan Provincial Key Research Plan Program of China
ID : 2020SK2006
Organisme : Natural Science Foundation of China
ID : 51804353
Organisme : Education Department of Hunan Province of China
ID : 18B195
Organisme : Education Department of Hunan Province of China
ID : 17B276
Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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