Adsorbent Capacity (maximum uptake) Operational conditions Isotherm and kinetics data best fit models % CIP removal (max) References Azolla filiculoides activated carbon 35.14 mg g-1 mg L-1 , adsorbent g L-1 , and contact minLangmuir isotherm model 99.1 Balarak, et al. [1 ] NiO (synthesized) Adsorbent g L-1 , , contact min, and 50°C Pseudo-second-order kinetic model 99.2 Balarak, et al. [1 ] Amine-functionalized mobil composition of matter no. 41 (MCM–41) mesoporous silica nanoparticle 164.3 mg g-1 , adsorbent dose = 0.8 g L-1 , CIP mg/L, adsorption min, and shaking rpmLangmuir isotherm model and pseudo-second-order model 99.25 Abu Rumman et al. [10 ] Activated carbon from Lemna minor plant magnetized with iron(III) oxide magnetic nanoparticles (Fe3 O4 -ACLM) 178.7 mg g-1 at 50°C mg L-1 , , g L-1 , contact min, and 50°CLangmuir isotherm model 100 Yilmaz et al. [79 ] γ -Al2 O3 nanoparticles— , initial mg L-1 , adsorbent , and contact minTemkin isotherm model and pseudo-second-order kinetic model 53 Asghar et al. [59 ] Multiwalled carbon nanotube (MWCNTs/Al2 O3 ) 41.73 mg g-1 , g L-1 , contact min, initial CIP mg L-1 , and 50°CLangmuir isotherm model — Balarak & Mckay [11 ] Powdered activated carbon magnetized by iron(III)oxide nanoparticles (PAC@Fe3 O4 -MN) 109.833 mg g-1 , PAC@Fe3 O4 -MN g L-1 , shaking rpm, initial mg/L, contact min, and KFilm diffusion — Al et al. [26 ] Magnetic chalcogenide composite (KMS-1/L-cysteine/Fe3 O4 (KCF) 181.32 mg g-1 Pseudo-second-order kinetic model — Wang et al. [69 ] Biochar derived from copyrolysis of sewage sludge and bamboo waste 62.48 mg g-1 — Pseudo-second-order, Freundlich, and Langmuir model 95 Li et al. [56 ] Herbal residue biochar 43.668 mg g-1 — Pseudo-second-order kinetics model Shang et al. [72 ] Activated carbon coated with multiwalled carbon nanotubes — , contact min, adsorbent mg L-1 , °C, and initial mg L-1 Pseudo-second-order and Freundlich isotherm 100 Sharifpour et al. [78 ] Magnetic polyaniline/graphene oxide-based nanocomposites — , adsorbent g L-1 , mg L-1 , and contact time = 30 minFreundlich model and pseudo-second-order kinetics 97 Kazem et al. [80 ] Low-cost hydrogel derived from agrowaste 106.038 mg g-1 Adsorbent g L-1 , contact min, and Langmuir isotherm and pseudo-second-order model — Nguyen et al. [81 ] Iron oxide/cellulose magnetic recyclable nanocomposite 168.03 mg g-1 , CIP mg L-1 , adsorbent mg L-1 , and contact minLangmuir isotherm and pseudo-first-order kinetic model 92.01 Azizi [2 ] Oat hulls 83 mg g-1 — Freundlich isotherm and pseudo-second-order kinetic mode — Movasaghi et al. [4 ] Chitosan/biochar hydrogel beads (CBHB) 76 mg g-1 Langmuir and pseudo-second-order kinetics — Afzal et al. [82 ] Magnesium oxide nanoparticles (MgO) 3.46 mg g-1 — Langmuir adsorption isotherm and pseudo-second-order kinetic model 85 Khoshnamvand et al. [73 ] Humic acid modified hydrogel beads 154.89 mg g-1 CIP mg L-1 Langmuir isotherm model and pseudo-second-order kinetic model — Zaheer et al. [83 ] Magnetic chalcogenide composite, KMS-1/L-cysteine/Fe3 O4 (KCF) 181.32 mg g-1 Pseudo-second-order kinetic model and Langmuir adsorption isotherm model — Wang et al. [69 ] Tannin foam immobilized with ferric ions 91.8 mg g-1 Pseudo-second-order rate model and Langmuir model 96.60 Hao et al. [84 ] Surfactant modified sepiolite 63.84 mg g-1 mg L-1 and adsorbent g L-1 Pseudo-second-order model 99.1 Balarak et al. [85 ] Modified bamboo biochar (MBC) 78.43 mg g-1 Adsorbent g L-1 , mg L-1 , , and contact min Pseudo-second-order rate model and Langmuir model 96 This study