Studies of Collectors. VII. Flotation of Heavy Metal Ions by Using Colored Surfactant

Autor:	Kimiho Yamada, Yoshifumi Koide, Shigekazu Sato
Rok vydání:	1986
Předmět:	chemistry.chemical_compound Aqueous solution Azo compound Sulfonate Pulmonary surfactant chemistry Metal ions in aqueous solution Inorganic chemistry Foam fractionation Qualitative inorganic analysis General Chemistry Fractionation
Zdroj:	Bulletin of the Chemical Society of Japan. 59:715-720
ISSN:	1348-0634 0009-2673
DOI:	10.1246/bcsj.59.715
Popis:	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 Cu2+, Cd2+, Hg2+, Pb2+, and Sr2+. 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 Cu2+, Pb2+, and Cd2+ by foam fractionation. The concentrations of R-C, R-Ha, and R-Hb in foams or aqueous solutions were correlated to their foaming abilities.
Databáze:	OpenAIRE
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