Process for the removal of metal ions from an aqueous medium uti

Details Process for the removal of metal ions from an aqueous medium uti Process for the removal of metal ions from an aqueous medium uti

1987-12-21

1989-08-15

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210688, 210747, 210912, 210913, 210914, B01D 1500

Patent

active

048572039

ABSTRACT:
A coal gasifier slag composition, and process utilizing a coal gasifier slag composition for the removal of a metal ion, or the ions of a plurality of metals, from an aqueous medium by contact of said coal gasifier slag composition with said aqueous medium. The coal gasifier slag, which is regenerable by contact with a dilute acid, is employed as a contact mass for the removal from an aqueous medium of a metal ion, or the ions of a plurality of metals, derived from Groups IB through VIIB, IIA through VA, and VIII of the Periodic Table of the Elements. The coal gasifier slag is useful for removing a metal ion, or the ions of a plurality of metals, from industrial waste water, groundwater, mine water and the like, or as a landfill, or as a protecting layer adjacent to or surrounding land fills, surface impoundments, tank farm beds and the like.

REFERENCES:
patent: 4170550 (1979-10-01), Kamody
patent: 4377483 (1983-03-01), Yamashita et al.
patent: 4530765 (1985-07-01), Sabherwal

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