Sample Aerobic Condition Aerobic Condition Static Condition 24 hrs 48 hrs 24 hrs 48 hrs 24 hrs 48 hrs 6 54.4 ± 6.93 68.02 ± 4.52 67.66 ± 3.40 93.1 ± 1.42 47.3 ± 4.69 73.5 ± 1.21 7 79.7 ± 5.84 82.3 ± 4.13 60.97 ± 4.08 82.1 ± 2.29 69.89 ± 4.88 95.45 ± 1.56 13 86.05 ± 4.84 90.07 ± 3.57 50.57 ± 3.38 87 ± 2.31 90.68 ± 2.93 92.69 ± 2.00 15 85 ± 3.08 86 ± 2.69 51.95 ± 3.25 93.14 ± 1.69 58.42 ± 1.61 85.55 ± 4.66 16 86 ± 7.60 91 ± 2.08 73.96 ± 3.16 92.1 ± 1.34 66.6 ± 4.86 73.37 ± 1.34 A 67 ± 6.30 85.6 ± 3.39 92.46 ± 4.31 92.9 ± 0.191 57.34 ± 3.23 92.2 ± 1.35

Table 4: Effect of Oxygen Requirements on Decolorization of Acid Orange (200 mg/L).