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Table 3 Variation of physicochemical parameters of industrial wastewater culture media inoculated with microbial isolates and exposed at 30°C for 5 d (n = 3)

From: Assessing the resistance and bioremediation ability of selected bacterial and protozoan species to heavy metals in metal-rich industrial wastewater

   BACTERIAL ISOLATES   
  Initial value (in mg/l or pH unit)      1d      2d      3d      4d      5d
pH
Pseudomonas putida 4.02 ± 0.01 4.05 ± 0.14 4.01 ± 0.03 4.06 ± 0.12 4.5 ± 0.75 4.33 ± 0.14
Bacillus licheniformis 4.05 ± 0.10 4.03 ± 0.21 4.04 ± 0.04 3.88 ± 0.84 4.14 ± 0.21 4.22 ± 0.02
Brevibacillus laterosporus 4.00 ± 0.27 4.04 ± 0.04 4.05 ± 011 3.36 ± 0.21 4.23 ± 0.07 4.36 ± 0.06
DO removal (%)
Pseudomonas putida 6.49 ± 0.12 13.87 ± 0.24 41.27 ± 0.14 70.93 ± 4.31 84.4 ± 4.02 82.4 ± 8.24
Bacillus licheniformis 7.03 ± 0.17 13.1 ± 1.07 13.57 ± 1.12 13.94 ± 1.21 25.51 ± 3.21 42.73 ± 3.02
Brevibacillus laterosporus 6.74 ± 0.08 12.33 ± 1.28 15.35 ± 0.12 17.93 ± 0.21 38.21 ± 1.37 39.61 ± 1.23
COD increase (%)
Pseudomonas 143.25 ± 7.12 19.56 ± 2.14 87.25 ± 7.95 159.23 ± 10.2 170.73 ± 5.18 175.86 ± 4.12
Bacillus 162.45 ± 10.25 29.23 ± 5.12 69.55 ± 6.89 129.28 ± 12.0 136.21 ± 1.32 142.14 ± 1.2
Brevibacillus 197.58 ± 9.23 7.25 ± 3.14 39.22 ± 8.14 51.08 ± 9.21 64.32 ± 2.9 68.33 ± 3.58
PROTOZOAN ISOLATES
pH
Peranema sp. 4.04 ± 0.02 3.94 ± 0.01 4.05 ± 0.05 4.06 ± 0.02 3.85 ± 0.09 3.78 ± 0.21
Trachelophyllum sp. 3.95 ± 0.12 3.93 ± 0.04 4.01 ± 0.17 3.96 ± 0.10 4.08 ± 0.12 3.89 ± 0.08
Aspidisca sp. 4.01 ± 0.07 3.94 ± 0.03 3.77 ± 0.21 4.08 ± 0.17 3.96 ± 0.26 3.88 ± 0.34
DO removal (%)
Peranema sp. 6.43 ± 1.12 24.42 ± 2.01 33.35 ± 0.17 45.3 ± 2.07 65.22 ± 3.27 68.83 ± 1.09
Trachelophyllum sp. 6.74 ± 2.01 10.49 ± 0.07 18.93 ± 2.01 18.03 ± 2.01 20.33 ± 1.09 23.02 ± 2.01
Aspidisca sp. 5.95 ± 0.0.1 12.55 ± 0.38 11.88 ± 0.21 10.8 ± 1.09 15.25 ± 2.08 16.73 ± 2.01
COD increase (%)
Peranema sp. 189.23 ± 9.25 7.5 ± 0.01 9.15 ± 1.02 11.25 ± 0.21 11.97 ± 0.38 12.07 ± 0.95
Trachelophyllum sp. 205.56 ± 6.21 16.85 ± 5.01 19.95 ± 1.97 20.12 ± 0.67 21.85 ± 0.67 23.53 ± 0.21
Aspidisca sp. 270.32 ± 2.21 15.25 ± 2.01 16.28 ± 1.20 20.95 ± 0.34 21.45 ± 0.21 21.43 ± 0.38