Comparative study on the removal of COD from POME by electrocoagulation and electro-Fenton methods: Process optimization

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Chairunnisak, A.^1 ; Arifin, B.^1 ; Sofyan, H.^2 ; Lubis, M.R.^1 ; Darmadi^1

Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia^1

Department of Mathematics, Syiah Kuala University, Banda Aceh, Indonesia^2

关键词: Box-Behnken design;    Comparative studies;    Electro coagulations;    Electro-Fenton method;    Electro-Fenton process;    Electrolyte concentration;    Palm oil mill effluents;    Response surface method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012026/pdf
DOI  :  10.1088/1757-899X/334/1/012026

来源: IOP

【 摘 要 】

This research focuses on the Chemical Oxygen Demand (COD) treatment in palm oil mill effluent by electrocoagulation and electro-Fenton methods to solve it. Initially, the aqueous solution precipitates in acid condition at pH of about two. This study focuses on the palm oil mill effluent degradation by Fe electrodes in a simple batch reactor. This work is conducted by using different parameters such as voltage, electrolyte concentration of NaCl, volume of H2O2and operation time. The processing of data resulted is by using response surface method coupled with Box-Behnken design. The electrocoagulation method results in the optimum COD reduction of 94.53% from operating time of 39.28 minutes, 20 volts, and without electrolyte concentration. For electro-Fenton process, experiment points out that voltage 15.78 volts, electrolyte concentration 0.06 M and H2O2volume 14.79 ml with time 35.92 minutes yield 99.56% degradation. The result concluded that the electro-Fenton process was more effective to degrade COD of the palm-oil-mill effluent compared to electrocoagulation process.