Review Article

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

Table 2

Removal of pharmaceuticals 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 MWCNTs by hydrolysis impregnationFe3O4Commercial MWCNTsAmoxicillin33.564.627----[87]
Magnetic AC by coprecipitation impregnationFe3O4Commercial ACNaproxen87.79325----[196]
Magnetic MWCNTs with dibenzo-18-crown-6 by hydrolysis impregnationFe3O4Dibenzo-18-crown-6Amoxicillin263.1525----[88]
Magnetic AC by coprecipitation impregnationFe3O4Commercial ACCarbamazepine182.9--25161241[134]
Magnetic GO nanoplatelets by coprecipitationFe3O4Commercial GOAmoxicillin106.38525--543.2[135]
Magnetic BC by impregnation with iron salts and direct HTCFe3O4Sugarcane bagasseTetracycline48.356.8309.7348.35[197]
Magnetic AC by ball milling impregnationFe3O4Commercial coconut shell-based ACTetracycline
Carbamazepine
45.3
135.1
62520.8486[198]
Magnetic BC by pyrolysis and ball milling impregnationFe3O4Coconut shellTetracycline
Carbamazepine
94.2
62.7
62519365
Chitosan-magnetic GO by coprecipitationFe3O4Commercial GOCiprofloxacin282.952514.76388.3[199]
Magnetic AC by direct impregnation with hydrothermal method and functionalized with silanesFe3O4Commercial ACCarbamazepine
Clofibric acid
Ibuprofen
114.3
78.7
166.7
7252.65960.9[200]
Magnetic MWCNTs by coprecipitation impregnationFe3O4Commercial MWCNTsAmoxicillin355.85725----[201]
Magnetic GO spongeFe3O4GraphiteTetracycline47310351.14--[124]
Magnetic carbon microspheres by pyrolysis and direct hydrothermal impregnationFe3O4GlucoseSulfonamide27.8542542.31228[136]
Magnetic BC by pyrolysis and impregnationγ -Fe2O3Astragalus membranaceus residuesCiprofloxacin68.962523.96203.7[202]
Pyrolysis of sewage sludge and alkali-acid treatmentγ-Fe2O3Sewage sludgeTetraciclyne286.91745--141.78[103]
Magnetic GO by graphite exfoliation and coprecipitation and magnetic RGO reduced by hydrazine hydrateFe3O4GraphiteTetracycline252.02-122534148.2[44]
Magnetic carbon via carbonizationα-FeMetal-organic frameworkTetracycline511.0674555.51171.7[203]
Magnetic GO by graphite exfoliation and coprecipitationFe3O4GraphiteChlorpheniramine472.01025--221[204]
Magnetic AC by impregnation with iron and cobaltCobalt ferriteCommercial ACAmoxicillin
Paracetamol
444.2
399.9
7253.07893.8[205]
Magnetic AC by simultaneous pyrolysis, impregnation, and activationγ-Fe2O3Corn stalksNorfloxacin7.691025--760.7[206]
Magnetic BC yolk shell by calcinationFe3O4Resorcinol and formaldehydeSulfamethazine312.562519.77247[207]
Pyrolysis of bones at 500 °C, coprecipitationFe3O4Chicken boneTetracycline98.892–102664.7328.06[171]
GO/diethylenetriaminepentaacetic acidFe3O4Commercial GOTetracycline
Ciprofloxacin
294.12
111.73
330--176[208]
Manganese-based magnetic BC by pyrolysis and coprecipitation impregnationFe3O4Potato stems and leavesNorfloxacin
Ciprofloxacin
Enrofloxacin
6.94
8.37
7.19
3309.8252[209]
Magnetic GO-polyaniline by graphite exfoliation and coprecipitationFe3O4GraphiteCiprofloxacin106.38625----[210]
Nitrogenated magnetic RGOFe3O4Commercial GONorfloxacin
Ketoprofen
158.1
468.0
6.825--38.2[75]
Magnetic BC by pyrolysis and impregnated by oxidative hydrolysisFe3O4 and γ-Fe2O3Pine sawdustSulfamethoxazole19.094.52547.8 Ampm/kg125.8[211]
Magnetic RGO hydrogelFe3O4Commercial RGOTetracycline
Ciprofloxacin
4.76
2.78
62514.566.8[212]
Polyglycerol mediated
SPMGO
Fe3O4Commercial GOTetracycline684.937256.81--[213]
Carbon dot modified magnetic CNTs by coprecipitation impregnation and hydrothermal modificationFe3O4Commercial CNTs and citric acid for carbon dotsCarbamazepine657255.64184.1[105]
Magnetic AC by direct impregnation and hydrothermal methodNi ferriteCommercial ACIbuprofen
Ketoprofen
172.19
85.64
225
25
6.25564.4[214]
Magnetic CNTs by coprecipitation/hydrothermal impregnationFe3O4Commercial CNTsKetoprofen
Diclofenac
Ibuprofen
7.9
17.9
9.0
525-----[215]
Phenol resin melted at 40 °C, soft-templating, and impregnationFe3O4Phenolic resinMinocycline6------[1]
Magnetic GO-SO3H by graphite exfoliation and coprecipitationFe3O4GraphiteIbuprofen
Tetracycline
160.83
500.68
7
7
30
35
55.4--[131]
Magnetic BC by carbonization and thermal activation procedureFe0White rot fungus of Phanerochaete chrysosporiumDiclofenac361.25--21.651986[216]
Magnetic GO-SiFe3O4GraphiteSulfamethoxazole15.4672526.98--[217]
β-cyclodextrin- magnetic GO by graphite exfoliation and coprecipitationFe3O4GraphiteSulfamethazine238.532530--[218]
Magnetic CNT by hydrolysis impregnationMn ferriteCommercial CNTsBezafibrate33.472523.896.526[219]
Humic acid coated magnetic BC by direct impregnation pyrolysis and coated after with humic acidFe3O4Potato stems and leavesNorfloxacin
Ciprofloxacin
Enrofloxacin
9.97
11.46
8.4
10304.0426.28[30]
Magnetic RGO sulfonated by pyrolysis, and inverse coprecipitation impregnationFe3O4Plastic bottle wasteGaramycin
Ampicillin
456
500
5.5
3.0
25
25
4.9600[220]
Magnetic BC by pyrolysis and coprecipitation impregnationFe3O4Banana biomassFurazolidone37.867.53041166.9[31]
Magnetic AC by hydrothermal carbonization and thermally activated with pyrolysisFe3O4 and Fe0Glucose
Bio sludge
Iron sludge
Sulfanilamide
Sulfadiazine
Sulfamethazine
Sulfamethoxazole
63.7
140.9
178.6
181.8
625171385[221]
Magnetic AC by coprecipitation impregnationFe3O4Commercial wood ACTetracycline208.332022.2--[222]

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