Efficiency of Electrochemical, Fenton and Electro-Fenton Processes on COD and TSS Removal from Leachate

• Published in: Journal of environmental science and technology Vol. 8; no. 5; p. 207
• Main Authors: Rabbani, D, Rezaeimofrad, M R, Mazaheri, A, Mosayebi, M
• Format: Journal Article
• Language: English
• Published: 01.01.2015
• Subjects: Alterations; Chemical oxygen demand; Composting; Contamination; Human; Liquids; Oxygen demand; Wastes; ISW, Iran
• ISSN: 1994-7887; 2077-2181

The development of human societies has led to increase in waste generation. On the waste disposal or composting facilities, the chemical and physical alterations produce a contaminated liquid called leachate. In this study, attempts were made to remove the Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) of the leachate using electrochemical, Fenton and electro-Fenton processes. Hence, we prepared leachate samples from a composting facility in Esfahan, Iran. Then, the effect of electrochemical, Fenton and electro-Fenton processes on COD and TSS removal investigated. The results confirm that the three mentioned methods can degrade the COD and TSS of the leachate. In most cases, the maximum removal rates were observed at first 40 min of the reaction. After that time, the removal process followed by a lower rate and decreased in some cases. Among the studied methods, the electro-Fenton process is the most efficient and is able to remove up to 73 and 92.4% of the COD and TSS, respectively. Also, the Fenton process is more effective than the electrochemical method in COD and TSS removal. Therefore, we suggest using the electro-Fenton method for the COD and TSS removal because of the higher efficiency and environmental advantages.