Nano zero-valent iron on activated carbon cloth support as Fenton-like catalyst for efficient color and COD removal from melanoidin wastewater

To reduce undesired iron leaching in Fenton reaction and to realize reusability of catalyst, chitosan-coated activated carbon cloth support loaded with nano zero-valent iron (ACC–CH–nZVI) was applied as a heterogeneous Fenton catalyst to treat melanoidin wastewater. Chitosan coating on ACC by chemic...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2021-01, Vol.263, p.127945, Article 127945
Main Authors: Raji, Mahdieh, Mirbagheri, Seyed Ahmad, Ye, Fei, Dutta, Joydeep
Format: Article
Language:English
Subjects:
ACC
Activated carbon
Activated carbon cloth
Activated carbon treatment
Bio-degradable organic wastes
biodegradation
Biological Oxygen Demand Analysis
Catalysis
catalyst
Catalysts
Charcoal
chemical composition
Chemical cross-linking
Chemical oxygen demand
Chemical oxygen demand removals
Chemicals removal (water treatment)
Chitosan
Clothes
coating
color
Color removal (water treatment)
Corresponding weights
Cost effectiveness
cost effectiveness analysis
Crosslinking
Fenton reaction
Fenton-like oxidation
Hydrogen Peroxide
Iron
iron nanoparticle
Leaching
molecular weight
Nano zero-valent irons
nZVI
Oxidation
Oxidation-Reduction
pollutant removal
Polymers - analysis
Positive ions
Removal efficiencies
Reusability
Stoichiometric ratio
stoichiometry
Synthetic melanoidin wastewater
Waste Disposal, Fluid - methods
Waste Water
waste water management
Wastewater treatment
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - chemistry
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Summary:To reduce undesired iron leaching in Fenton reaction and to realize reusability of catalyst, chitosan-coated activated carbon cloth support loaded with nano zero-valent iron (ACC–CH–nZVI) was applied as a heterogeneous Fenton catalyst to treat melanoidin wastewater. Chitosan coating on ACC by chemical crosslinking results in 6% chitosan on ACC subsequently loading 3.5% iron. At optimum conditions, ACC–CH–nZVI leads to 88.4% and 76.2% of color and chemical oxygen demand (COD) removal, respectively, upon treating synthetic melanoidin wastewater of 8000 mg/l COD. The corresponding weight ratio of consumed H2O2 to COD is 1.02, far below the stoichiometric ratio 2.125, indicating the economic value of this catalyst. Reusability of ACC–CH–nZVI is demonstrated for five cycles of treatment with minimal iron leaching (
ISSN:0045-6535
1879-1298
1879-1298
DOI:10.1016/j.chemosphere.2020.127945