Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1993-01-07
1994-06-07
Marquis, Melvyn I.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428378, 428391, 428403, 428404, 428405, D02G 300
Patent
active
053188462
ABSTRACT:
A method for the removal and concentration of desired ions such as Pd(II), Ru(III), Pd(IV), Au(III), Au(I), Ag(I), and Hg(II) from a multiple ion source solution which may contain larger concentrations of other undesired ions including H.sup.+ comprises bringing the source solution into contact with a compound comprising a sulfur and electron withdrawing group containing ligand covalently bonded through an organic spacer silicon grouping to a solid inorganic support. The sulfur and electron withdrawing group containing ligand portion(s) of the compound has an affinity for the desired ions to form a complex thereby removing the desired ions from the source solution. The desired ions are removed from the compound by contacting the compound with a much smaller volume of a receiving solution having a greater affinity for the desired ions than does the sulfur and electron withdrawing group containing ligand portion of the compound. The process is useful in removing desired or unwanted ions from acidic waste streams, metal refining streams, and other industrial or environmental streams. The invention is also drawn to the sulfur and electron withdrawing group containing ligands covalently bonded through a spacer grouping to a hydrophilic inorganic solid support material.
REFERENCES:
patent: 5039419 (1991-08-01), Bradshaw et al.
patent: 5071819 (1991-12-01), Tarbet et al.
patent: 5084430 (1992-01-01), Tarbet et al.
patent: 5173470 (1992-12-01), Bruening et al.
patent: 5182251 (1993-01-01), Bruening et al.
patent: 5190661 (1993-03-01), Bruening et al.
Bradshaw Jerald S.
Bruening Ronald L.
Izatt Reed M.
Tarbet Bryon J.
Brigham Young University
Marquis Melvyn I.
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