title: Mercury(II) Adsorption on the Maikop Series Rocks and Mud Volcano Clays
abstract: The acid–base properties of the surface of Maikop series clays and mud volcano clays, as well as their adsorption properties with respect to mercury(II) ions, were studied. It is shown that pHPZC for the former is 7.1 on average; for the latter, 9.0. The pHPZC value for mud volcano clays is consistent with the pH values in the waters of mud volcanoes of the Kerch–Taman region. When the mass ratio of the sorbent and solution is 1 : 900, adsorption equilibrium occurs after 4 days with active stirr
journal: Moscow University Geology Bulletin