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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Model</td><td class="align_center">EV (kcal·mol<sup>−1</sup>)</td><td class="align_center">EE (kcal·mol<sup>−1</sup>)</td><td class="align_center"><i>E</i> (kcal·mol<sup>−1</sup>)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Water-raw coal</td><td class="align_center">−380.36 (67.8%)</td><td class="align_center">−180.95 (32.2%)</td><td class="align_center">−561.31</td></tr><tr><td class="align_left">Water-C<sub>12</sub>(EO)<sub>20</sub>-coal</td><td class="align_center">−227.96 (42.2%)</td><td class="align_center">−312.37 (57.8%)</td><td class="align_center">−540.33</td></tr><tr><td class="align_left">Water-Tween 20-coal</td><td class="align_center">−261.51 (31.9%)</td><td class="align_center">−557.26 (68.1%)</td><td class="align_center">−818.77</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Adsorption energy between water and raw or modified coal surface.</div>

Adsorption Science & Technology

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Table 4

Table 4: Influence of the Branched Structure of Polyoxyethylene Units in Nonionic Surfactants on the Wettability of Anthracite: A Combined Modeling and Experimental Study 

Table 4 | Influence of the Branched Structure of Polyoxyethylene Units in Nonionic Surfactants on the Wettability of Anthracite: A Combined Modeling and Experimental Study 