Efficient removal of chemical organic demand and total organic carbon from leachate using heterogeneous Fenton catalyst based on activated carbon

Authors

Amar IDIR, Research Unit: Materials, Processes and Environment, Faculty of Technology, M’hamed Bougara University, Boumerdes 35000, AlgeriaFollow
Mounir ZIATI, Laboratory of Soft Technologies, Physico-chemical Valorization of Biological Materials and Biodiversity, Chemistry Department, Faculty of Sciences, M’hamed Bougara University, Boumerdes 35000, Algeria. Laboratory of Applied Chemistry and Materials, Chemistry Department, Faculty of Sciences, M’hamed Bougara University, Boumerdes 35000, AlgeriaFollow
Mohamed Bouzid, Research Unit: Materials, Processes and Environment, Faculty of Technology, M’hamed Bougara University, Boumerdes 35000, AlgeriaFollow

Abstract

Organic components contained in leachates resulting from decomposition of waste are difficult to degrade. Leachate volume and its composition vary depending on biogeochemistry of site type of deposited residues, and the age of sanitary landfill. The present study aims to develop efficient heterogeneous Fenton oxidation of organic matter, expressed in terms of chemical organic demand (COD) and total organic carbon (TOC) of leachate using the newly synthesized iron-modified activated carbon. The characterization of catalyst revealed that the Fe(II) was successfully introduced onto the original activated carbon (AC) and diversified the material’s surface morphology and elemental compounds. The heterogeneous Fenton oxidation showed that under an initial pH of 3.0, and temperature of 60°C, the Fe-AC/Fenton system obtained a maximum removal rate of 99% of COD and 95% of TOC, with hydrogen peroxide (H₂O₂) dosages of 12 mmol/L and the Fe-AC mass of 1g/L. the catalyst regeneration treatments were evaluated over five cycles. We note that our Fe- activated carbon catalyst gave very acceptable leachate treatment efficiency compared to to pure activated carbon, the above results open an interesting avenue for the development of functional catalysts based on Fe - activated carbon for pollution removal. We could make a forecast of the choices and conditions of realization at a higher level.

Recommended Citation

IDIR, Amar; ZIATI, Mounir; and Bouzid, Mohamed (2024) "Efficient removal of chemical organic demand and total organic carbon from leachate using heterogeneous Fenton catalyst based on activated carbon," Emirates Journal for Engineering Research: Vol. 29: Iss. 2, Article 2.
Available at: https://scholarworks.uaeu.ac.ae/ejer/vol29/iss2/2