Compositions containing thiolates for removal of heavy metal ion

Details Compositions containing thiolates for removal of heavy metal ion Compositions containing thiolates for removal of heavy metal ion

1983-08-19

1985-04-02

Dees, Carl F.

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Including organic component

210688, B01J 2012, B01J 2018

Patent

active

045088381

ABSTRACT:
A composition containing thiolate for the removal of heavy metal ions from dilute aqueous solutions, characterized in that the composition is a sorption complex of a thiolate with two or more -SMe- groups (wherein Me represents alkali or ammonium) with a swellable silicate, whose ion exchange capacity is 5-350 milliequivalents/100 g. The composition is suspended in the aqueous medium to be purified and separated off after the absorption of the heavy metal ions from the aqueous solution. The heavy metals can be recovered in known ways.

REFERENCES:
patent: 3033641 (1962-05-01), Thomas, Jr.
patent: 4033767 (1977-07-01), Colegate et al.
patent: 4100065 (1978-07-01), Etzel
patent: 4167481 (1979-09-01), Cremers et al.
Applied Clay Mineralogy by Grim, McGraw-Hill Book Co., Inc., N.Y., 1962, pp. 38 and 39.

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