Magnetite, Hematite and Zero-Valent Iron as Co-Catalysts in Advanced Oxidation Processes Application for Cosmetic Wastewater Treatment

Catalysts

Dominika Ścieżyńska¹  Prasanth Prabhu¹  Monika Krupa¹  Jan Bogacki¹  Dominika Bury¹  Piotr Marcinowski¹ 

[1]Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, 00-653 Warsaw, Poland

关键词: industrial wastewater;    advanced oxidation processes;    zero valent iron;    magnetite;    hematite;   

DOI  :  10.3390/catal11010009

来源: DOAJ

【 摘 要 】

Background: There is a need for more effective methods of industrial wastewater treatment. Methods: Cosmetic wastewater was collected and subjected to H₂O₂/Fe₃O₄/Fe₂O₃/Fe⁰ and UV/H₂O₂/Fe₃O₄/Fe₂O₃/Fe⁰ process treatment. Results: Total organic carbon (TOC) was decreased from an initial 306.3 to 134.1 mg/L, 56.2% TOC removal, after 120 min of treatment for 1:1 H₂O₂/COD mass ratio and 500/500/1000 mg/L Fe₃O₄/Fe₂O₃/Fe⁰ catalyst doses. The application chromatographic analysis allowed for the detection and identification of pollutants present in the wastewater. Identified pollutants were removed during the treatment processes. Processes carried out at a pH greater than 3.0 were ineffective. The UV process was more effective than the lightless process. Conclusions: The applied processes are effective methods for wastewater treatment. Chromatographic results confirmed the effectiveness of the treatment method. The kinetics of the process were described by the modified second-order model. On the basis of ANOVA results, the hypothesis regarding the accuracy and reproducibility of the research was confirmed.

【 授权许可】

Unknown