Leslie FISHBEIN Research Assistant, Biosorption
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Office: Rm. 7280 Wong Building
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Degrees: BEng
Chemical Engineering, McGill University (2001)
Research Project: "Precious
Metal Recovery by Biosorption"
Abstract
Gold is extracted from its ores most often by complexing it with cyanide,
forming a stable anionic Au-cyanide complex. The biosorption process is
being studied for removing the Au-cyanide complex from solution.
The effect of pH on Au cyanide adsorption is established by comparing adsorption
isotherms (Au and crab-shell based biosorbents) at different pH with and
without increased ionic strength of the solution (as NaCl). As arsenic
is often accompanying gold in ores, its effects on the biosorption process
are also examined.
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