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Table 2 Degree, dye removal rate and half-life period of decolorization of melachite green (MG) and crystal violet (CV) by Stenotrophomonas maltophilia isolate TPMD-1

From: Decolorization of Malachite green dye by Stenotrophomonas maltophilia a compost bacterium

Concentration (mg L−1)

MG

CV

Degree ofdecolorization (%)

λ (h−1)

t½ (h)

Degree of decolorization (%)

λ (h−1)

t½ (h)

100

99.46 ± 0.50a

0.049 ± 0.003A

14.14 ± 0.1p

99.04 ± 0.65a

0.04 ± 0.02A

17.32 ± 0.12p

200

98.24 ± 0.57a

0.031 ± 0.002B

22.35 ± 0.13q

97.50 ± 0.54b

0.023 ± 0.03 J

30.13 ± 0.11q

300

85.9 ± 0.53b

0.014 ± 0.004C

49.51 ± 0.09r

81 ± 0.5c

0.010 ± 0.05C

69.3 ± 0.10 s

400

79.5 ± 0.55d

0.012 ± 0.003D

57.76 ± 0.1r

75 ± 0.43e

0.006 ± 0.03E

115.5 ± 0.09t

500

67.4 ± 0.51f

0.009 ± 0.004F

77.01 ± 0.13u

54.51 ± 0.47 g

0.003 ± 0.03G

231 ± 0.11v

  1. Mean values ± SD followed by different letters in same column indicate significant differences according to DMRT (P < 0.05)
  2. ‘a-g’ was used to compare degree of decolorization of both dyes, ‘A-G’ used to compare rate constants, and p–v to compare half-life periods of two dyes