International Journal of Chemical Engineering / 2016 / Article / Tab 3

Research Article

Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins

Table 3

Experimental conditions, resin and packed bed properties, and adsorption/desorption performances relative to the breakthrough tests.

Parameter Test ID
XAD1
(0.5 m, 1.4 m/h)
XAD2
(1.8 m, 3.1 m/h)
IRA1
(1.8 m, 2.8 m/h)
IRA2
(1.8 m, 1.3 m/h)

Resin type and propertiesResin typeXAD16XAD16IRA958 ClIRA958 Cl
Resin bulk density (, /L)0.870.870.650.65
Resin porosity (, —)0.830.890.530.55
Resin long. dispersivity (, m)0.0040.029bb

Experimental conditionsBed length (m)0.51.81.81.8
(m/h)1.43.12.81.3
(°C)30242926
Imperia OMW production year2012201320142014

Performances and best-fitting values of model parametersPC adsorption yield (, —)88%92%87%97%
COD adsorption yield (, —)75%37%95%96%
Resin utilization efficiency (, —)12%43%9%30%
PC desorption yield (, —)74%75%60%51%
PC/COD enrichment factor (—)1.22.50.91.1
Productivity (/)3.47.62.10.9
(1/s)2.5 ± 0.23.1 ± 0.5bb
(/)85 ± 2110 ± 10bb
(/)11 ± 219 ± 4bb

Test XAD1 corresponds to test bt2 in [47].
Estimates not available, as the simulations were performed only on the best performing resin, XAD16.
Evaluated at a 20% PC outlet normalized concentration.