Studies of collectors. VII. Flotation of heavy metal ions by using colored surfactant.
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概要
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Colored surfactants containing complex radicals(R-Bc, R-Bs, R-Sh, R-S, R-C, R-Ha, and R-Hb) were applied as ion-flotation collectors and foam-fractionation collectors. The extent of floatabilities for the colored complexing surfactants and metal ions was easily recognized by the degree of discoloration. R-Bc, R-Bs, and R-Sh with low HLB values formed floatable complexes in pH 6–9 with Cu<SUP>2+</SUP>, Cd<SUP>2+</SUP>, Hg<SUP>2+</SUP>, Pb<SUP>2+</SUP>, and Sr<SUP>2+</SUP>. The residual concentrations of R-Sh, R-Bc, and R-Bs were below 0.1 ppm; however, these concentrations gradually increased after obtaining a minimum concentration of metal ions. Since R-C, R-Ha, and R-Hb had high HLB values, they easily floated Cu<SUP>2+</SUP>, Pb<SUP>2+</SUP>, and Cd<SUP>2+</SUP> by foam fractionation. The concentrations of R-C, R-Ha, and R-Hb in foams or aqueous solutions were correlated to their foaming abilities.
- 公益社団法人 日本化学会の論文
著者
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Koide Yoshifumi
Department Of Applied Chemistry And Biochemistry Faculty Of Engineering Kumamoto University
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Yamada Kimiho
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University
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Yamada Kimiho
Department of Synthetic Chemistry, Faculty of Engineering, Kumamoto University
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Sato Shigekazu
Department of Synthetic Chemistry, Faculty of Engineering, Kumamoto University
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