Relationships of lignosulfonate adsorption onto the zinc sulfide surface


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Abstract

Low-molecular-mass lignosulfonates (Mw = 9250 amu) are adsorbed more strongly onto ZnS from neutral solutions (pH 4.5–4.8), and high-molecular-mass lignosulfonates (Mw = 46300 rpm), from acid solutions (pH 1.4–1.5). The sorption of the low-molecular-mass sample at pH 1.5 is affected by competing sorption of the solvent (Н2SO4). The lignosulfonate samples studied are adsorbed onto zinc sulfide by the chemisorption mechanism.

About the authors

T. N. Lugovitskaya

Chernyshevsky National Research University

Author for correspondence.
Email: tlugovitskaja@mail.ru
Russian Federation, Astrakhanskaya ul. 23, Saratov, 410012

K. N. Bolatbaev

Chernyshevsky National Research University

Email: tlugovitskaja@mail.ru
Russian Federation, Astrakhanskaya ul. 23, Saratov, 410012

S. S. Naboichenko

Yeltsin Ural Federal University

Email: tlugovitskaja@mail.ru
Russian Federation, ul. Mira 19, Yekaterinburg, 620002

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