Optimization of electrocoagulation process for the treatment of landfill leachate

International Technical Postgraduate Conference

Huda, N.^1 ; Raman, A.A.^1 ; Ramesh, S.^2

Chemical Engineering Department, Faculty of Engineering, University Malaya, Kuala Lumpur

50603, Malaysia^1

Centre of Advanced Manufacturing and Material Processing (AMMP), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^2

关键词: Central composite designs;    Electrolyte concentration;    Numerical optimizations;    Operational parameters;    Persistent organic pollutants;    Response surface methodology;    Second-order polynomial equations;    Wastewater treatment process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/210/1/012008/pdf
DOI  :  10.1088/1757-899X/210/1/012008

来源: IOP

【 摘 要 】

The main problem of landfill leachate is its diverse composition comprising of persistent organic pollutants (POPs) which must be removed before being discharge into the environment. In this study, the treatment of leachate using electrocoagulation (EC) was investigated. Iron was used as both the anode and cathode. Response surface methodology was used for experimental design and to study the effects of operational parameters. Central Composite Design was used to study the effects of initial pH, inter-electrode distance, and electrolyte concentration on color, and COD removals. The process could remove up to 84 % color and 49.5 % COD. The experimental data was fitted onto second order polynomial equations. All three factors were found to be significantly affect the color removal. On the other hand, electrolyte concentration was the most significant parameter affecting the COD removal. Numerical optimization was conducted to obtain the optimum process performance. Further work will be conducted towards integrating EC with other wastewater treatment processes such as electro-Fenton.