Table 4 Residual Concentration (RC), Removal Efficiency (RE) of Biochemical Oxygen Demand (BOD) in the Raw and Treated Oily Wastewater during the Batch Treatment.

From: Microbiological analysis and bioremediation bioassay for characterization of industrial effluent

Time (Days)

Control

R4

R19

Mixed Culture

RC

RE (%)

RC

RE (%)

RC

RE (%)

RC

RE (%)

0

648 mg/l

1

342.9

47.08b

605.7

6.53b

612.9

5.42b

503.1

22.36b

2

143.1

77.92

416.7

35.69

432.0

33.33

383.4

40.83

3

138.6

78.61

358.2

44.72

377.1

41.81

369.0

43.06

4

105.3

83.75

193.5

70.14a

274.5

57.64

292.5

54.86

5

91.8

85.83a

250.2

61.39

311.4

51.94

171.0

73.61a

7

127.8

80.28

231.3

64.31

234.9

63.75a

215.1

66.81

  1. aThe Highest RE%, bThe Lowest RE% For Each Culture.