Electrochemical advanced oxidation processes coupled with peroxymonosulfate for the treatment of real washing machine effluent: A comparative study

Author(s)

Ghanbari, Farshid ^[1] ; Martinez-Huitle, Carlos A. ^[2]

Affiliation

^[1] Abadan Sch Med Sci, Dept Environm Hlth Engn, Abadan - Iran

^[2] Univ Fed Rio Grande do Norte, Inst Chem, BR-59078970 Natal, RN - Brazil

• Document type: Journal article
• Source: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 847, AUG 15 2019.
• Web of Science Citations: 7

Abstract

In order to manage water resources in countries with water crisis, recycling of water in houses can be a practical strategy. The usage of advanced oxidation processes (AOPs) is an efficient way when a low volume of wastewater is considered. In this work, a real washing machine effluent (WME) was treated by four electrochemical advanced oxidation processes. Electro-Fenton (EF) and photoelectro-Fenton (PEF) processes are combined with peroxymonosulfate (PMS) to treat WME. Heterogeneous iron-based catalyst (Fe3O4, MNPs) was synthesized as catalyst for all processes. The characteristics of MNPs were determined by several techniques. All operating parameters were investigated for EF, PEF, EF/PMS and PEF/PMS. PEF/PMS process removed nearly complete organic compounds (99.5% of chemical oxygen demand and 97.1% of total organic carbon) under the conditions of pH = 5.0, 30 mA/cm(2), MNPs = 100 mg/L, 2 mM PMS and 180 min reaction time. MNPs function was without change after three times usage. The results indicated that PEF/PMS can be a new system for treatment of effluents such as greywater, washing machine etc. for the application in household scale to reduce water consumption. (AU)

• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Research Projects - Thematic Grants