Paper mill wastewater treatment by Fe2+ and heat‐activated persulfate oxidation: Process modeling and optimization

This study investigated Chemical Oxygen Demand (COD) and turbidity removal from paper mill industry wastewater via Fe2+/heat‐activated persulfate oxidation. A mathematical model was developed, and the process variables (pH, reaction time, PS/COD, Fe2+ concentration for Fe2+‐activated PS, and tempera...

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Bibliographic Details
Published in:Environmental progress 2021-03, Vol.40 (2), p.n/a
Main Authors: Can‐Güven, Emine, Guvenc, Senem Yazici, Kavan, Nihal, Varank, Gamze
Format: Article
Language:English
Subjects:
activated persulfate oxidation
Chemical oxygen demand
Heat
Heat treatment
Iron
Mathematical models
Optimization
Oxidation
Paper industry wastes
paper mill wastewater
Process parameters
Process variables
Pulp & paper mills
Reaction time
Response surface methodology
sulfate radicals
Turbidity
Wastewater treatment
Water treatment
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Summary:This study investigated Chemical Oxygen Demand (COD) and turbidity removal from paper mill industry wastewater via Fe2+/heat‐activated persulfate oxidation. A mathematical model was developed, and the process variables (pH, reaction time, PS/COD, Fe2+ concentration for Fe2+‐activated PS, and temperature for heat‐activated PS) were optimized using the Response Surface Methodology and Central Composite Design methods. Under the optimum conditions, respectively, 70.9 and 99.4% COD and turbidity removal efficiencies were obtained for Fe2+‐activated PS oxidation, while 56.1 and 98.9% COD and turbidity removal efficiencies were determined for heat‐activated PS oxidation. The results indicated that both processes are efficient for paper mill industry wastewater treatment, and central composite design is an appropriate method for designing and optimizing process parameters.
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.13508