Contaminant

Surfactant, concentration. (g/L)

Solution pH

Initial conc. or range (mg/L)

Contact time (min)

Agitation (rpm)

Temp. (˚C)

Kinetic model

Isotherm

Contaminant removed (% or mg/g)

References

Cd (II)

SDS, 10.1,

4.28*CMC

6

100

120

100

20

Pseudo second order

Freundlich

22.3

Ahn et al. [23]

SDBS, 10.1

10.64*CMC

6

100

120

100

20

Pseudo second order

Freundlich

17.53

Ahn et al. [23]

DSS, 10.1

5.94*CMC

6

100

120

100

20

Pseudo second order

Freundlich

17.31

Ahn et al. [23]

Virgin activated carbon

6

100

120

100

20

Pseudo second order

Freundlich

2.47

Ahn et al. [23]

Cd (II)

SDBS, 30.7 73.4*CMC

4.5 - 7.2

10 - 100

1440

-

25

?

Langmuir

44.2a

Sun et al. [24]

Virgin activated carbon

4.5 - 7.2

10 - 100

1440

-

25

?

Langmuir

6.8

Sun et al. [24]

Co (II)

SDS, 3.54 1.5*CMC

7

20 - 100

90

250

40

Pseudo second order

Langmuir

51

Kakavandi [26]

Bromate

CTAC, 0.64 1.26*CMC

3

2 - 20

1440

-

25

Pseudo second order

Langmuir

38.02

Chen et al. [25]

Virgin activated carbon

3

2 - 20

1440

-

25

Pseudo second order

Langmuir

7.02

Chen et al. [25]

Bromate

CTAC, 0.64 2*CMC

-

1 - 100

720

-

-

Pseudo second order

Langmuir

35.8

Farooqet al. [22]

Bromate

CPC, 0.68

2*CMC

-

1 - 100

720

-

-

Pseudo second order

Langmuir

34.2

Farooqet al. [22]

CTAB, 0.729 2*CMC

-

1 - 100

720

-

-

Pseudo second order

Langmuir

13.1

Farooq et al. [22]

Virgin activated carbon

-

1 - 100

720

-

-

Pseudo second order

Langmuir

~13.1

Farooq et al. [22]

Nitrate

CTAB, 10.9 33.3*CMC

5.6

100

5

250

25

Pseudo second order

Langmuir

83.3; 60%

Allalouet al. [28]

Virgin activated carbon

5.6

100

5

250

25

Pseudo second order

Langmuir

14%

Allalou et al. [28]

Nitrate

CTAB, 0.164 0.5*CMC

7

40 - 200

120

200

25

Pseudo second order

Langmuir

21.5b

Mazarji et al. [27]

Nitrate

CPMG, 2.5

6.5 - 6.8

25 - 376

90

150

23

Pseudo second order

Langmuir

26

Cho et al. [29]

Virgin activated carbon

6.5 - 6.8

25 - 376

90

150

23

Pseudo second order

Langmuir

14.3

Cho et al. [29]

Cr (VI)

CPMG, 2.5

6.5 - 6.8

25 - 376

90

150

23

Pseudo second order

Langmuir

81

Cho et al. [29]

Virgin activated carbon

6.5 - 6.8

25 - 376

90

150

23

Pseudo second order

Langmuir

55

Cho et al. [29]

Cr (VI)

HDTMA, 0.168 0.5*CMC

-

10 - 200

180

150

20

Pseudo second order

Langmuir

4.06

Choi et al. [17]

CPC, 0.161 0.5*CMC

-

10 - 200

180

150

20

Pseudo second order

Langmuir

3.70

Choi et al. [17]

Virgin activated carbon

-

10 - 200

180

150

20

Pseudo second order

Langmuir

1.28

Choi et al. [17]

Perchlorate

CTAC, 1.6

5*CMC

~6.7

5 - 50

120

120

60

Langmuir

55.3

Tang et al. [21]