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

Table 5

Packing quality assessment on the basis of the fluid-dynamic tests.

Test ID	N (—)		HETP/ (—)	(—)
Before XAD2 (1.8 m, 3.1 m/h)	120	0.017	27	1.3
After XAD2 (1.8 m, 3.1 m/h)	57	0.037	58	1.0
Before IRA1 (1.8 m, 2.8 m/h)	46	0.045	61	1.3
After IRA2 (1.8 m, 1.3 m/h)	29	0.073	99	1.8

The fluid-dynamic tests were performed at a 1.2 m/h superficial velocity. The velocities reported in the test ID refer to the PC breakthrough test performed before or after each fluid-dynamic test.
Number of theoretical plates in the column packing (—).
Height equivalent to a theoretical plate (m).
HETP/average size of the packing particles (—).
Asymmetry factor (—).