Sodium hypochlorite and Cu-O-Mn/ columnar activated carbon catalytic oxidation for treatment of ultra-high concentration polyvinyl alcohol wastewater.
Catalytic oxidation
Polyvinyl alcohol
Pre-oxidation
Wastewater treatment
Journal
Chemosphere
ISSN: 1879-1298
Titre abrégé: Chemosphere
Pays: England
ID NLM: 0320657
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
received:
11
05
2021
revised:
07
07
2021
accepted:
09
07
2021
pubmed:
31
7
2021
medline:
29
10
2021
entrez:
30
7
2021
Statut:
ppublish
Résumé
Complete degradation of high concentration polyvinyl alcohol (PVA) is challenging. In this article, a two-stage process of NaClO pre-oxidation and columnar activated carbon (loaded with metal active components) catalytic oxidation was used to treat high concentration PVA wastewater. The degree of polymerization of PVA is 2400 and the water concentration is 15 wt %. In the first stage, NaClO efficiently broken long chain to short, the viscosity of PVA solution decreased from 45,100 mPaS to 4.65 mPaS. And in the second stage, the short chain was further oxidized to small molecules under H
Identifiants
pubmed: 34329136
pii: S0045-6535(21)01998-6
doi: 10.1016/j.chemosphere.2021.131526
pii:
doi:
Substances chimiques
Waste Water
0
Water Pollutants, Chemical
0
Charcoal
16291-96-6
Polyvinyl Alcohol
9002-89-5
Hydrogen Peroxide
BBX060AN9V
Sodium Hypochlorite
DY38VHM5OD
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
131526Informations de copyright
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