Adsorbate

Adsorbent

Fitted Isotherm

Fitted Kinetics

Ref.

Pb(II)

Illite/Smectite Clay

Langmuir

-

[4]

Hg(II)

activated Carbon from Rosmarinusofficinalis leaves

Langmuir

PSO

[72]

Phosphate anion

Membranes

Flory-Huggins

-

[51]

As

Fe -Ti bimetal oxides

Freundlich & Langmuir

PFO

[73]

Atrazine

Eucalyptus tereticornis L. (EB)

Freundlich, Koble?Corrigan, Toth and Fritz-Schluender

PSO

[74]

Imidacloprid

PFO

Reactive Black 5

Bentonite clay

Harkin-Jura and Freundlich

PSO

[75]

Cu(II)

Peanut hulls

Langmuir

PFO, PSO & Elovich

[1]

Rhodamine B (RhB)

Raphiahookerie fruit epicarp

Freundlich

PSO & Elovich

[76]

2,4,6-trichlorophenol

oil palm empty fruit bunch-based activated carbon

Freundlich & RP

PSO & Boyd-IPD

[40]

Maxilon blue GRL, and direct yellow DY 12

Activated carbon from coconut husk

Fritz?Schlunder (heterogeneous with multi-layers)

PSO

[77]

Zn²⁺

Phosphoric Acid Modified Rice Husk

Langmuir

25 J/mol (Temkin)

0.7 kJ/mol (DRK)

-

[45]

Cd (II)

Chitosan and methyl orange onto bentonite

R² insufficient to decide: ∆q (%) & other should be used

Nonlinear than linear

[78]