Inderscience Publishers

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

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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

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