Removal of pollutants with determination of power consumption from landfill leachate wastewater using an electrocoagulation process: optimization using response surface methodology (RSM)

Perumal Asaithambi, Dejene Beyene, Abdul Raman Abdul Aziz, Esayas Alemayehu
2018 Applied Water Science  
Treatment of landfill leachate wastewater by electrocoagulation process using an aluminium electrode was investigated in a batch electrochemical cell reactor. Response surface methodology based on central composite design was used to optimize the operating parameters for the removal of % color and % total organic carbon (TOC) together with power consumption from landfill leachate. Effects of three important independent parameters such as current density (X 1 ), inter-electrode distance (X 2 )
more » ... d solution pH (X 3 ) of the landfill leachate sample on the % color and % TOC removal with power consumption were investigated. A quadratic model was used to predict the % color and % TOC removal with power consumption in different experimental conditions. The significance of each independent variable was calculated by analysis of variance. In order to achieve the maximum % color and % TOC removal with minimum of power consumption, the optimum conditions were about current density (X 1 )-5.25 A/dm 2 , inter-electrode distance (X 2 )-1 cm and initial solution of effluent pH (X 3 )-7.83, with the yield of color removal of 74.57%, and TOC removal of 51.75% with the power consumption of 14.80 kWh/m 3 . Electrocoagulation process could be applied to remove pollutants from industrial effluents and wastewater.
doi:10.1007/s13201-018-0715-9 fatcat:pxn2b4cfnvf6pav76llihjr4fq