Dyes

d1 (%)a

      d2 (%)b

Time of incubation (days/ h)

        D (%)c

1a

0 (1.5)

0 (6.2)

12 (72 h)

100 (95.0)

1b

1.2-5.7 (92.3)

0.5-1.7 (1.9)

12 (96 h)

92.4-98.0 (7.0)

1c

4.9 (12.1)

1.5 (7.1)

12 (96 h)

93.6 (80.8)

1d

41.6 (93.5)

0.6 (0.4)

12 (96 h)

57.8 (6.1)

1e

56.6 (23.4)

0.2 (1.3)

12 (96 h)

43.2 (75.3)

1f

13.2 (26)

19.3 (14.3)

12 (96 h)

67.5 (58.8)

1g

50.0 (51.3)

1.1 (0.7)

12 (96 h)

48.1 (48.0)

2a

1.0 (4.8)

2.3 (1.9)

12 (96 h)

96.8 (93.3)

2b

1.8 (0.4)

1.1 (2.5)

12 (96 h)

97.1 (97.2)

2c

0 (0.1)

2.6 (2.6)

12 (96 h)

97.1 (97.3)

2d

75.1 (57.7)

1.8 (2.6)

12 (96 h)

23.5 (39.7)

2e

0.2 (0.8)

2.1 (3.9)

12 (96 h)

97.7 (95.3)

2f

17.5 (51.2)

27.9 (0.7)

12 (96 h)

54.4 (48.1)

2g

5.3 (6)

2.1 (9.5)

12 (96 h)

92.6 (84.5)


Initial OD600 of Culture A = 3.5; adye adsorbed on the cell pellet; bdye in the cellfree
extract; cbiotic decolorisation;
*Values in the parenthesis are obtained when culture B was used under aerobic
condition with Initial O.D. of Culture B= 1.2.
Table 1: Decolorisation of heterocyclic monoazo disperse dyes 1/2 under static
and anoxic conditions.