Process of using polytetraalkylammonium and polytrialkylamine-co

Details Process of using polytetraalkylammonium and polytrialkylamine-co Process of using polytetraalkylammonium and polytrialkylamine-co

1993-06-01

1994-08-02

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210674, 210679, 210684, B01D 1500

Patent

active

053343166

ABSTRACT:
A method for the removal and concentration of desired ions from a source solution which may contain larger concentrations of other ions including H.sup.+ comprises bringing the source solution into contact with a compound comprising a polytetraalkylammonium and/or polytrialkylamine-containing ligand covalently bonded through an organic spacer silicon grouping to a solid inorganic support. The polytetraalkylammonium and/or polytrialkylamine 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 polytetraalkylammonium and/or polytrialkylamine ligand portion of the compound. The concentrated ions thus removed may be recovered by known methods. The process is useful in removing desired or unwanted ions from water streams and in the treatment of waste streams. The invention is also drawn to the polytetraalkylammonium and polytrialkylamine-containing ligands covalently bonded through a spacer grouping to a hydrophilic inorganic solid support material.

REFERENCES:
patent: 4943375 (1990-07-01), Bradshaw et al.
patent: 4952321 (1990-08-01), Bradshaw et al.
patent: 4959153 (1990-09-01), Bradshaw et al.

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