International Journal of Chemical Engineering / 2016 / Article / Tab 2

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.


Polymeric matrixCross-linked styrene/divinylbenzeneCross-linked acrylicCross-linked acrylic gel
Physical formWhite translucent beadsWhite opaque beadsWhite translucent beads
Specific density (kg/L)1.041.05–1.081.06
Adsorption capacity at saturation 370 mg/0.8 eq/L>1.60 eq/L
Surface area (m2/g)800bb
Porosity (dry resin, L/L)0.55bb
Average particle size (dry resin, mm)0.630.63–0.850.50–0.75
Uniformity coefficient2.01.8<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% maxb
Maximum reversible swelling25%b<30%

Referring to medium molecular weight compounds.
Parameter not provided by the resin supplier.