Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Stability and efficiency of Fe3+ EDDS complex for the treatment of secondary effluent in the photo-Fenton process

Full text
Author(s):
Ahile, Ungwanen J. [1] ; Wuana, Raymond A. [2] ; Itodo, Adams U. [2] ; Sha'Ato, Rufus [2] ; Malvestiti, Jacqueline A. [3] ; Dantas, Renato F. [3]
Total Authors: 6
Affiliation:
[1] Benue State Univ, Dept Chem, PMB 102119, Makurdi - Nigeria
[2] Univ Agr, Dept Chem, PMB 2373, Makurdi - Nigeria
[3] Univ Estadual Campinas, UNICAMP, Sch Technol, Paschoal Marmo 1888, BR-13484332 Limeira, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Desalination and Water Treatment; v. 222, p. 366-374, MAY 2021.
Web of Science Citations: 0
Abstract

This study focuses on the use of Fe3+ EDDS for degradation of methylene blue and wastewater disinfection using the photo-Fenton process. The stability of Fe3+ EDDS was tested at different pH values ranging from 4 to 11. The study finds that an increase in the iron precipitate and a decrease in degradation efficiency comes about as pH increases. An investigation into the Fe:L ratio shows that when a high amount of ligand is used, the amount of iron released from the complex is reduced; with an iron-ligand ratio of 1:1.5 being the most suitable one for the Fe3+ EDDS system. Furthermore, the result of careful examination of temperature changes shows that at the increase in temperature of the reaction system, there was a decrease in the efficiency of degradation of reaction. The process was more effective at a temperature of 25 degrees C than at higher temperatures, occasioned by higher iron precipitate. The results of the disinfection and regrowth of microorganisms also show that the efficiency of the process is pH-dependent with pH 7 having the best disinfection and less regrowth rate as compared to a pH value of 9, for instance. (AU)

FAPESP's process: 14/17774-1 - Influence of the secondary effluent composition on the disinfection by advanced oxidation processes
Grantee:Renato Falcão Dantas
Support Opportunities: Research Grants - Young Investigators Grants