Microbial enhanced heavy crude oil recovery through biodegradation using bacterial isolates from an Omani oil field

Table 1 The minimal media compositions

Compounds (g/L)	M1	M2	M3	M4	M5
Compounds (g/L)	Ref. [11]	Ref. [21]	Ref. [8]	Ref. [19]	Ref. [20]
CaCl₂	0.0275	–	–	0.00077	–
CaCl₂·2H₂O	–	–	0.14	–	0.02
FeCl₃	–	–	–	–	0.05
FeCl₃·6H₂O	0.025	–	–	–	–
FeSO₄·7H₂O	–	–	–	0.0011	–
KCl	–	–	0.34	–	–
KH₂PO₄	0.085	1.0 g/L	–	4.08	1.0
K₂HPO₄	0.21	1.0 g/L	0.14	–	1.0
KNO₃	–	0.5 g/L	–	–	–
MgCl₂·6H₂O	–	–	1.0	–	–
MgSO₄·7H₂O	0.0225	0.5 g/L	–	0.2	0.2
MnSO₄·4H₂O	–	–	–	0.00067	–
NaCl	–	–	15.0	–	–
Na₂HPO₄·2H₂O	0.33	–	–	–	–
Na₂HPO₄	–	–	–	7.12	–
Na-EDTA	–	–	–	0.00148	–
NH₄Cl	0.005	–	0.25	–	–
NH₄NO₃	–	–	–	4.0	1.0
Yeast extract	–	0.5	2.0	–	–
Trace elements	–	10 mL	–	–	–
Vitamin solution	–	1.0 mL	–	–	–

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