Table 4.

The effects of surfactants on CSH and biodegradation of hydrocarbons.

Surfactant	Concentration	Strains	CSH %			Degradation %			Reference
			Substrates	Without Surfactant	With Surfactant	Substrates	Without Surfactant	With Surfactant
Rhamnolipids	600 mg/L	Pseudomonas LSH-7	crude oil	-	-	crude oil	77%	87%	[34]
Rhamnolipids	400 mg/L	Bacillus subtilis BUM	phenanthrene	23%	25%	phenanthrene	82%	32%	[35]
Rhamnolipids	120 mg/L	Aeromonas hydrofila	diesel oil	7%	12%	diesel oil	58%	60%	[36]
Tween 80	1000 mg/L	Polyporus sp. S133	phenanthrene	-	-	phenanthrene	30%	47%	[37]
	5000 mg/L							72%
	10000 mg/L							61%
SDS	50 mg/L	Bacillus subtilis BL-27	n-hexadecane	25%	16%	crude oil	65%	79%	This work
	200 mg/L				19%			70%
Tween 80	50 mg/L				23%			65%
	200 mg/L				13%			76%
Rhamnolipids	50 mg/L				17%			68%
	200 mg/L				10%			64%
Surfactin	50 mg/L				22%			64%
	200 mg/L				19%			64%