Adsorbent

Adsorption capacity mg/g

Contact time

Particle size of adsorbent

Reference

Bentonite

52.91

15 min

0.160-0.630 mm

[39]

Activated alumina

13.69

30 min

-

[40]

Natural zeolite

2.21

40 min

1-3 mm

[41]

Bagasse fly ash modified activated carbon (10 °C)

24.06

75 min

200-250 µm

[42]

Bagasse modified activated carbon (25 °C)

31.11

12 h

< 325 mesh

[43]

Bagasse modified activated carbon (40 °C)

54

12 h

< 325 mesh

[43]

Coal fly ash unmodified (30-60 °C)

6.5-13.3

45 min

47.9 µm

[44]

Fe impregnated fly ash modified FeCl₃ (30-60 °C)

7.5-15.5

45 min

47.9 µm

[44]

Al impregnated fly ash modified Al(NO₃)₃ (30-60 °C)

7.0-15.4

45 min

47.9 µm

[44]

SCMNPs

128.03

10 min

11.7-24.81 nm

(current study)