Adsorbent

Dye

pH

Isotherm

Adsorption Capacity (mg/g)

Ref.

NiFe₂O₄ NPs

Eriochrome Black T

3

Freundlich

81.52

40

Magnetic polymer multi-wall carbon nanotube

Sunset Yellow

2

Langmuir

85.4

41

Polymeric network surface-modified magnetic nanoparticles

Methyl orange

5

Langmuir

80.5

42

Fe₃O₄ magnetic nanoparticles modified with

poly-lysine

Amaranth

2

Langmuir

90.82

43

Carbon

Reactive Black 5

<5

Langmuir

23.92

24

CMNPs

Reactive Orange 107

4

Freundlich

95.23

Present Study