Adsorbents	Isotherm models	References
α-Al₂O₃	Langmuir, FFG	[19]
Apatite	Freundlich	[20]
Activated carbon	Langmuir	[7]
Activated carbon	Toth and Radke-Prausnitz	[4]
Activated carbon fibers	Langmuir	[8]
Activated carbon cloth	Prausnitz-Radke	[21]
Bagasse fly ash	Langmuir	[2]
Bamboo charcoal	Freundlich	[16]
Carbon nanotube	Freundlich	[22]
Ion-exchange resin	Langmuir, Freundlich	[23]
Iron powder	Langmuir, FFG	[19]
Kaolinite	Freundlich	[24]
Mesoporous silica	Langmuir	[17]
Montmorillonite	Freundlich	[24]
Poly 4-vinyl aniline-co-DVB	Freundlich	[25]
Polymeric adsorbents	Langmuir, Freundlich	[3]
Post-crosslinked fiber	Freundlich	[18]
Rice husk ash	Redlich-Peterson	[4]
Spent oil shale	Langmuir	[26]
Zeolite	Langmuir-Freundlich	[27]
Shale	Freundlich	This study