Research Article
Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins
Table 2
Technical characteristics of the tested sorbents.
| | | XAD16 | IRA958 Cl | IRA67 |
| | Polymeric matrix | Cross-linked styrene/divinylbenzene | Cross-linked acrylic | Cross-linked acrylic gel | | Physical form | White translucent beads | White opaque beads | White translucent beads | | Specific density (kg/L) | 1.04 | 1.05–1.08 | 1.06 | | Adsorption capacity at saturation | 370 mg/ | 0.8 eq/L | >1.60 eq/L | | Surface area (m2/g) | 800 | b | b | | Porosity (dry resin, L/L) | 0.55 | b | b | | Average particle size (dry resin, mm) | 0.63 | 0.63–0.85 | 0.50–0.75 | | Uniformity coefficient | 2.0 | 1.8 | <1.8 | | Fine content (mm) | <0.350: 2.0% max | <0.355: 1.0% max | <0.300: 3.0% max | | Coarse content (mm) | >1.18: 2.0% max | >1.18: 5.0% max | b | | Maximum reversible swelling | 25% | b | <30% |
|
|
Referring to medium molecular weight compounds.
Parameter not provided by the resin supplier.
|
