Substrate

Bacterial strain

Biodegradation rate (%)

SAE 50 used oil

Acinetobacter S2

16.88b ± 0.85

Pseudomonas S7

13.41c ± 1.90

SAE 50 used oil + Tween 80

Acinetobacter S2

18.83a ± 0.32

Pseudomonas S7

16.01b ± 0.67

SAE 50 used oil + SDS

Acinetobacter S2

16.99b ± 0.18

Pseudomonas S7

13.63c ± 0.32