Degradation of Synthetic Agro wastewater (Fipronil) using Electro Coagulation Process by Iron Electrodes - Agriculture and Soil Science

The electrocoagulation of fipronil (insecticide) contaminated wastewater by Iron anodes has been investigated. During the various  stages  of  electrolysis,  parameters  such  as  COD,  chloride  ion  concentration,  Fluoride  were  examined  and  discussed.  The  maximum chemical oxygen demand (COD) removal efficiency 70 %, chloride 62%, fluoride 40% was achieved at pH 7, operated at the current density of 7.5 mA/cm2, electrolyte (NaCl) concentration of .1M and at 120 min of electrolysis using iron anode. A neutral pH  showed  the  maximum  reduction  of  COD  compared  with  alkaline  and  acidic  pH.  Increase  in  current  density  and  process  time  led to the increase in COD removal. The experimental results showed that the electrochemical oxidation process could effectively reduce the COD from the fipronil contaminated wastewater. The degradation of fipronil was analyzed and confirmed by GC-MS and intermediate produced during the process. 

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