Dear Bibin K Suresh many thanks for sharing this very interesting technical question with the RG community. Unfortunately I'm not a specialist in this field of research as we work mainly in synthetic inorganic chemistry. However, there are several relevant literature eferences available which might help you in your analysis. For example, please have a look at the following potentially useful articles:
Electrochemical Removal of Ammonium Nitrogen and COD of Domestic Wastewater using Platinum Coated Titanium as an Anode Electrode
This paper has been published Open Access (please see the attached pdf file). the same is true for the following interesting paper:
Process Optimization of Electrochemical Treatment of COD and Total Nitrogen Containing Wastewater
(also attached)
The third paper is freely available as public full text on RG:
Removal of ammonia nitrogen in wastewater by indirect mechanism using electrochemical method with platinum electrode as anode
Article Removal of ammonia nitrogen in wastewater by indirect mechan...
I hope this helps. Good luck with your research and best wishes, Frank Edelmann