Table 1 Physical properties of macroporous and ion-exchange resins used in this study
Resins | Polarity | Mean pore size (Å) | Surface area (m2/g) | Pore volume (ml/g) | Matrix type |
|---|---|---|---|---|---|
XAD-2 | nonpolar | 90 | 300 | 0.65 | styrene-divinylbenzene |
XAD-4 | nonpolar | 100 | 750 | 0.98 | styrene-divinylbenzene |
XAD-7HP | weakly polar | 300–400 | 380 | 0.5 | acrylic ester |
XAD-16 | nonpolar | 200 | 800 | 1.82 | styrene-divinylbenzene |
XAD-1180 N | nonpolar | 300–400 | 450 | 1.4 | styrene-divinylbenzene |
FPA90RF | strong base anion | ND | ND | 0.8 | acrylic ester |
IRA67 | weak base anion | ND | ND | 1.6 | acrylic ester |