Table 12.10
Comparison of magnetic properties and oilsorption capacity of different magnetic oilsorbents. WCA: water contact angle
Magnetic sorbent
Functional material
Synthesis method
Saturation
magnetization
(emu/mg)
WCA
(rad)
Application
uptake
Fe
3 O
4 @oleic acid (OA)
OA
Microemulsion
0.01657
–
Crude oil
(co)
95 wt%
Fe
3 O
4 @sodium oleate (SO) SO
Co-precipitation (co-p)
0.04940
2.71
Engine oil
(Eo)
–
Fe
3 O
4 @Quaternized
chitosan (QC)
QC
Modification of sorber and
grafting reaction
0.0305
–
Emulsified
oil
90%
Magnetic (M) compound
resin
Gelatin glue
Suspension
Polymerization
–
–
Kerosene
100%
M-collagen-SPION
Collagen
Heat treatment
–
–
Eo
2 g/g
Fe
3 O
4 @Polysttyrene (PS)
Styrene (St) and
sodium dodecyl
Sulfonate (SDS)
Emulsion
Polymerization
0.03462/0.06125
2.46–2.67 Diesel oil
(do)
Lubricating
oil (Lo)
3 g/g
Fe
3 O
4 @P
(St/Divinylbenzene (DVB))
@
P(methyl methacrylate
(MMA)/St/DVB)
Methyl
Tablemethacrylate
Hydrothermal
–
2.46
Do
3.63 g/g
Fe
3 O
4 @polyvinyl
pyrrolidone (PVP)
PVP
Modification of polyol
Hydrothermal
–
–
Co
MC252 oil
~100%
Fe
3 O
4 @sulfonated
asphaltene (SAS)
SAS
Co-p
0.075–0.092
–
Co
90%
Fe
3 O
4 @C
Iron containing metal Pyrolysis
0.026–0.049
2.50
Oil
Hydrocarbon
40 g/g
(continued)
12 Remediation of Pollution by Oil Spills
437