Review Article

Engineered Magnetic Carbon-Based Adsorbents for the Removal of Water Priority Pollutants: An Overview

Table 4

Removal of pesticides and other pest controllers from aqueous solution using magnetic carbon-based adsorbents: preparation, removal operating conditions, and adsorption properties.

Synthesis routeMagnetic sourceCarbon sourceAdsorbateAdsorption capacity (mg/g)pHT (°C)Magnetization (emu/g)BET area (m2/g)Reference

Magnetic GO by chemical exfoliation and coprecipitation impregnationMn ferriteGraphiteGlyphosate33.444.725--305.7[147]
Magnetic AC by direct impregnation with hydrothermal method and functionalized with silanesFe3O4Commercial ACBisphenol A126.97252.65960.9[200]
Magnetic GO modified with Cu MOF and β-cyclodextrin by coprecipitation impregnation and chemical modificationFe3O4Commercial GOThiamethoxam
Imidacloprid
Acetamiprid
Nitempyram
Dinotefuran
Clothianidin
Thiacloprid
2.88
3.11
2.96
2.56
1.77
2.88
3.21
----10.47250.33[237]
Phenyl-modified magnetic GO/mesoporous silica by hierarchical bridge-pore structureFe3O4GraphiteAvemerctin
Imidacloprid
Pyridaben
Dichlorvos
Acetamiprid
Dursban
Isocarbophos
Phoxim
9.21
6.40
12.72
47.78
5.11
8.01
2.88
8.23
--2525446.5[238]
Magnetic BC by direct molten salt methodFe3O4Fir dustDichlorophenol
Atrazine
298.12
102.17
--2540.02404[239]
Palm carbonization at 773 K, liquid phase reduction method for iron impregnationFe0PalmGlyphosate80.0425--253.97[153]
Magnetic MWCNTs modified with Zn MOF by coprecipitation impregnation and chemical coordination methodFe3O4Commercial MWCNTsTriazophos
Diazinon
Phosalone
Profenofos
Methidathion
Ethoprop
Sulfotep
Isazofos
3.12
2.59
3.80
3.89
2.34
2.18
2.84
3.00
4--53.56128[152]
Carboxilated magnetic GO modified with silica-coated magnetite by covalent couplingFe3O4GraphiteChlorpyrifos
Malathion
Parathion
135
61.9
35.6
72533133[154]
Magnetic CNTs functionalized with imidazole zeolite by thermal procedureFe3O4Commercial carboxylic-CNTsTetrabromobisphenol77.077309.65--[240]
Magnetic GO by electrochemical exfoliationNiOGraphiteMethylparaben
Ethylparaben
Propylparaben
Butylparaben
3.12
5.28
8.42
10.46
525--227.5[241]
Magnetic GO-AC by chemical exfoliation, solvothermal impregnationMn ferriteGraphite and commercial vegetal origin ACGlyphosate6.784.725--19.77[242]
Chemical activation with H3PO4 for AC production, composite produced by coprecipitation methodFe3O4Peanut shellsAtrazine62.325.07----189.50[156]
Magnetic AC coated with by pyrolysis, microwave activation and coprecipitation impregnationFe3O4Waste tyreMethylparaben
Propylparaben
85.9
90.0
625---1281[155]
Pyrolysis of bagasse at 600 °C, impregnation of salts, activation with KOHZn ferriteSugarcane bagasseImidacloprid313.06255.99660.0[243]

Adsorbent nomenclature: activated carbon (AC), biochar (BC), carbon nanocages (CNCs), carbon nanotubes (CNTs), graphene oxide (GO), metal-organic framework (MOF), multiwalled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWCNTs), and reduced graphene oxide (RGO).