Filter for sorption of heavy metals

Details Filter for sorption of heavy metals Filter for sorption of heavy metals

1980-06-30

1981-07-28

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

210679, 210688, C02F 142

Patent

active

042809258

ABSTRACT:
A hydrophilic, cellulose ester material that may be used as a filter or ion exchanger to sorb heavy metal ions, such as silver, mercury, lead, copper and cadmium, from aqueous solutions, the material having incorporated therein a high surface area zinc sulfide of at least 15 square meters per gram, and preferably at least 24 square meters per gram; and method for incorporating high surface area zinc oxide into a cellulose ester material by slurry process or solution process and converting the zinc oxide so incorporated into high surface area zinc sulfide; and product of the method.

REFERENCES:
patent: 3317312 (1967-05-01), Kraus et al.
patent: 3408291 (1968-10-01), Thomas et al.
patent: 4026796 (1977-05-01), Wegmuller et al.

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