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 properties
Resin type
XAD16
XAD16
IRA958 Cl
IRA958 Cl
Resin bulk density (, /L)
0.87
0.87
0.65
0.65
Resin porosity (, —)
0.83
0.89
0.53
0.55
Resin long. dispersivity (, m)
0.004
0.029
b
b
Experimental conditions
Bed length (m)
0.5
1.8
1.8
1.8
(m/h)
1.4
3.1
2.8
1.3
(°C)
30
24
29
26
Imperia OMW production year
2012
2013
2014
2014
Performances and best-fitting values of model parameters
PC 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 (—)
1.2
2.5
0.9
1.1
Productivity (/)
3.4
7.6
2.1
0.9
(1/s)
2.5 ± 0.2
3.1 ± 0.5
b
b
(/)
85 ± 2
110 ± 10
b
b
(/)
11 ± 2
19 ± 4
b
b
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.
