Time (days)
TPH content (%)
Control
Using Bio-emulsifier
Using Tween80
Soil washing:
0
1
32.00
29.40
32.00
20.20
32.00
24.00
Removal Efficiency (%)
8.10
36.90
25.00
Bioremediation:
2
4
7
15
21
30
29.40
27.04
26.40
24.20
21.77
17.31
20.20
15.84
12.10
9.60
4.05
2.96
24.00
19.70
16.45
12.58
9.84
6.66
Removal efficiency (%)
41.10
85.30
72.30
Total efficiency (%)
45.90
90.80
79.20
Table 3:
TPH content the oil sludge after 24 hours soil washing and 30 days bioremediation.
