Related Experiment Video
Updated: Aug 22, 2025
06:00
Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development
Published on: March 17, 2023
537
Electrochemical oxidation process on palm oil mill effluent waste activated sludge: optimization by response surface
Branda Jian Tong Yap1, Gan Chin Heng2, Choon Aun Ng1
1Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia.
Summary
Electrochemical oxidation (EO) effectively pre-treats palm oil mill effluent (POME) waste activated sludge (WAS), improving sludge disintegration and dewaterability by overcoming hydrolysis limitations.
Area of Science:
- Environmental Engineering
- Electrochemistry
- Wastewater Treatment
Background:
- Conventional biological treatment of palm oil mill effluent (POME) faces hydrolysis limitations.
- Pre-treatment is crucial to enhance the efficiency of POME waste activated sludge (WAS) processing.
Purpose of the Study:
- To investigate electrochemical oxidation (EO) as a pre-treatment for POME WAS.
- To optimize EO parameters for improved sludge disintegration and dewaterability.
Main Methods:
- Utilized a ruthenium oxide-coated titanium (Ti/RuO2) electrode for EO.
- Employed response surface methodology (RSM) with a central composite design for optimization.
- Analyzed surface morphology and elemental composition using field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDS).
Main Results:
- High correlation coefficients (R2: 0.9044-0.9773) validated the RSM model.
- Optimized EO (17-27 mA/cm2, 55-75 min, 10 g/L NaCl) achieved >20% MLVSS removal, >43% CST reduction, <19% EPS increment, and >25% sCOD increment.
- Demonstrated significant improvements in POME WAS disintegration and dewaterability.
Conclusions:
- Electrochemical oxidation is an efficient pre-treatment method for POME WAS.
- EO offers a practical approach to enhance sludge disintegration and dewaterability, overcoming biological treatment limitations.
