Application of diatomite for gallic acid removal from molasses wastewater.
Adsorption
Diatomite
Gallic acid
Molasses wastewater
Purification
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
15 Apr 2021
15 Apr 2021
Historique:
received:
01
07
2020
revised:
11
09
2020
accepted:
26
09
2020
pubmed:
16
11
2020
medline:
16
11
2020
entrez:
15
11
2020
Statut:
ppublish
Résumé
In this study, diatomite was refined by a simple purification method consisting of calcination combined with acid washing. Optimal purification conditions were the focus, including the influence of conditions on diatomite morphology, structure, and specific surface area. The results showed that the optimal conditions were a 550 °C carbonization temperature and 25 wt% HCl. This purified diatomite was then employed to adsorb gallic acid (GA) from molasses wastewater in a series of adsorption experiments, which illustrated that (ḭ) GA adsorption fitted a pseudo-second-order model and the Freundlich equation better with GA adsorption by purified diatomite; (ḭḭ) the adsorption process was physical, nonspontaneous, and endothermic; (ḭḭḭ) the maximum GA adsorption capacity by purified diatomite was 19.852 mg g
Identifiants
pubmed: 33189386
pii: S0048-9697(20)36240-9
doi: 10.1016/j.scitotenv.2020.142711
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
142711Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.