Phytoremediation Study and Effect of pH on Biomass Productivity of Eichhornia crassipes - Management of Natural Resources in a Changing Environment - page 190

Table 2 Final day physico-chemical properties of Hi ndon wastewater at dif f erent pH

C-1 (pH = 7.6) T-1 (pH = 5) T-2 (pH = 6) T-3 (pH = 7) T-4 (pH = 8) T-5 (pH = 9)

Parameters Mean ± SD Mean ± SD Mean ± SD Mean ± SD Mean ± SD Mean ± SD

DO (mg/l) 5.20 ± 0.25 1.90 ± 0.50 3.70 ± 0.67 5.20 ± 1.08 5.80 ± 0.44 2.20 ± 0.18

BOD (mg/l) 9.50 ± 0.93 15.40 ± 2.40 11.30 ± 1.12 8.10 ± 1.06 9.00 ± 1.80 17.20 ± 0.48

COD (mg/l) 66.40 ± 1.05 83.77 ± 0.33 80.60 ± 1.24 55.60 ± 0.02 60.40 ± 0.15 100.28 ± 0.42

Sulphate (mg/l) 8.00 ± 0.25 9.80 ± 0.07 9.24 ± 0.20 7.40 ± 0.18 8.13 ± 0.35 11.20 ± 0.24

Phosphate (mg/l) 0.032 ± 0.04 0.125 ± 0.05 0.087 ± 0.10 0.027 ± 0.04 0.020 ± 0.01 0.132 ± 0.14

Total-nitrogen (mg/l) 85.40 ± 0.39 63.05 ± 1.63 70.18 ± 0.10 110.54 ± 0.43 100.32 ± 0.14 65.50 ± 0.26