- Tytuł:
- Chemical pretreatment of formaldehyde wastewater by selected Advanced Oxidation Processes (AOPs)
- Autorzy:
- Kowalik, P.
- Powiązania:
- https://bibliotekanauki.pl/articles/115614.pdf
- Data publikacji:
- 2011
- Wydawca:
- Fundacja na Rzecz Młodych Naukowców
- Tematy:
-
advanced oxidation processes
catalytic ozonation
Fenton process - Opis:
- Chemical oxidation processes: Fenton process and catalytic ozonation with Mn2+ ions were investigated for effectiveness of formaldehyde (FA) oxidation. The influence of operational variables — O3, H2O2, Mn2+ and Fe2+ concentrations and reaction time were investigated. Researches were carried out on aqueous solution of FA, which concentration was 500 mg/l. Fenton process was investigated at pH 3 and catalytic ozonation at pH 7, 10 and 12. Results revealed that Fenton process was much more effective in FA degradation than catalytic ozonation with Mn2+ as a catalyst. The optimal H2O2/Fe2+ dosage for a Fenton process was 2000/1000 mg/l. COD and FA concentrations were reduced 59,6% and 79,5%. In case of catalytic ozonation with Mn2+ the eff ectiveness was much less and it was the biggest at pH 12 and Mn2+ dosage 25 mg/l where COD and FA concentration were reduced 14% and 38%. Therefore, Fenton process can be promising technology for FA wastewater pretreatment.
- Źródło:
-
Challenges of Modern Technology; 2011, 2, 4; 42-48
2082-2863
2353-4419 - Pojawia się w:
- Challenges of Modern Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł