Title: Lariat ethers with a novel proton-ionisable groups: new generation of collectors in ion flotation process

Authors: Pawel Maciejewski; Malgorzata Ulewicz; Waldemar Robak; Wladyslaw Walkowiak

Addresses: Tadeusz Kosciuszko Land Forces Military Academy, Czajkowskiego 109 Street, 51-150 Wroclaw, Poland. ' Department of Metal Extraction and Recirculation, Czestochowa University of Technology, Armii Krajowej 19 Street, 42-200 Czestochowa, Poland. ' Tadeusz Kosciuszko Land Forces Military Academy, Czajkowskiego 109 Street, 51-150 Wroclaw, Poland. ' Division of Chemical Metallurgy, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27 Street, 50-370 Wroclaw, Poland

Abstract: The influence of aqueous solution pH on the flotation rate and flotation efficiency with lariat ethers possessing cavities from DB-13-C-4 to DB-22-C-7 and four different acidic groups (sulphonamide, sulphonic, carboxylic, phosphonic) was studied. The correlation between the maximal percent removal of mentioned cations, the initial concentration of lariat ether and the non-ionic foaming agent, and the pH of aqueous solution as well as molar intrinsic volume and Hydrophilic–Lipophilic Balance (HLB) of studied ethers was found.

Keywords: ion flotation; caesium (I); strontium (II); barium (II); lead (II); proton-ionisable lariat ethers; removal; aqueous solutions.

DOI: 10.1504/IJEWM.2011.042638

International Journal of Environment and Waste Management, 2011 Vol.8 No.3/4, pp.305 - 324

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 23 Sep 2011 *

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