Hydraulic Performance Modifications of a Zeolite Membrane after an Alkaline Treatment: Contribution of Polar and Apolar Surface Tension Components

Table 4

Estimation of the surface tension components (mN m⁻¹) of the Na-mordenite layer from the contact angle measurements obtained with three liquids (Table 3).

	Jańczuk et al. [29]			Costanzo et al. [30]			Lee [31]
	()	()	()	()	()	()
Before treatment	4.8	22.1	53.6	2.4	18.3	69.5	4.7	21.2	32.9
After treatment	2.3	49.6	34.6	0.2	29.4	71.8	1.7	32.9	31.6