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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