Research Article

Influence of the Branched Structure of Polyoxyethylene Units in Nonionic Surfactants on the Wettability of Anthracite: A Combined Modeling and Experimental Study

Figure 3

Relative concentration distribution along the z-axis: (a) water-C12(EO)20-anthracite system and (b) water-Tween 20-anthracite system.
(a)
(b)