Process for removing metal ions from solution with a dipicolylam

Details Process for removing metal ions from solution with a dipicolylam Process for removing metal ions from solution with a dipicolylam

1990-06-29

1992-04-07

Morris, Theodore

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423 24, 423 34, 423100, 423101, 423139, 423140, C01B 3320

Patent

active

051026406

ABSTRACT:
Dipicolylamine (DPA) is chemically bound to the surface of a silicate, forming a solid phase particle without substantially decreasing the affinity constant of the DPA for certain ions. Then, the solid phase particle is contacted with the solution, thereby binding an ion to the particle. Subsequently the ion can be stripped from the ligand by treatment with a complexing agent or acid.

REFERENCES:
patent: 3118831 (1964-01-01), Morris
patent: 3936399 (1976-02-01), Hirai et al.
patent: 4659512 (1987-04-01), Macedo et al.
patent: 4666683 (1987-05-01), Brown et al.

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