| Issue |
E3S Web Conf.
Volume 603, 2025
International Symposium on Green and Sustainable Technology (ISGST 2024)
|
|
|---|---|---|
| Article Number | 01033 | |
| Number of page(s) | 7 | |
| Section | Environmental Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202560301033 | |
| Published online | 15 January 2025 | |
Optimizing Ti/RuO2-IrO2 – electro activated persulfate oxidation processes for the degradation of ammonia-nitrogen and color from landfill leachate using Response Surface Methodology
1 Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900 Kampar, Perak, Malaysia
2 School of Engineering and Technology, Central Queensland University, 120 Spencer St., Melbourne VIC 3000, Australia
* Corresponding author: sumathi@utar.edu.my
Landfilling disposal method has raised many environmental concerns especially water pollution from the discharge of landfill leachate. This study is aimed at investigating degradation of ammonia and removal of color of landfill leachate by electro-persulfate activation using rutheniumiridium coated titanium (Ti-RuO2/IrO2) electrode. Process variables such as reaction time, current density and persulfate dosage were optimized using central composite design via response surface methodology (RSM). RSM models show high coefficient of determination, R2 of 0.9182 and 0.9249 for ammonia-nitrogen (NH3-N) and color respectively. The maximum removal efficiency for NH3-N and color were recorded as 83.7% and 65.8% respectively. Persulfate can be used in oxidation processes as an activating agent to remove NH3-N and color from landfill leachate.
© The Authors, published by EDP Sciences, 2025
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