Initially, the COD concentration is varied at the rate of 2,000mg/L. The maximum reduction in COD is found at
18,000mg/L of 83.33% . Further, the experiments were carried out between 16,000mg/L to 20,000mg/L at every
500mg/L of COD concentration. But the maximum reduction in COD remains the same (83.33%). Veeramalini et al.[9]
reported that 500mg/l Moringa oleifera reduces COD by 37% in treatment of textile wastewater.