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Effect of Metal Impurities on Adsorption of Gold by Activated Carbon in Cyanide Solutions.

Authors
Sheya-SAN; Palmer-GR
Source
MISSING :7 pages
Link
NIOSHTIC No.
10007303
Abstract
The U.S. Bureau of Mines performed batch equilibrium contact experiments to examine the ability of activated coconut-shell carbon to adsorb various metal cyanide complexes. Tests were also conducted to determine the effect these cyanide complex impurities might have on the adsorption of gold by the activated carbon. Metal cyanide species included in the investigation were antimony, arsenic, cadmium, calcium, cobalt, gold, iron, mercury, nickel, silver, thallium, and zinc. Tests were made over a ph range of 6.4 to 12.5. The carbon exhibited a preference for gold adsorption over other metals present in solution. In the absence of gold, the metal cyanide complexes were adsorbed; adsorption generally decreased with increasing ph. However, calcium and thallium adsorptions increased with increasing ph, while arsenic and iron were not adsorbed at any ph.
Publication Date
19890101
Document Type
IH; Report of Investigations;
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
RI 9268
NIOSH Division
SLRC;
Source Name
MISSING
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