Abstract
A study of arsenic fixation was conducted to investigate the stabilization of arsenic in copper smelter flue dust by dissolution in slag matrices, and by encapsulation in cements, mortars, clays, and concrete. The success or failure of the stabilization was determined by immersion leach tests. Results of the study demonstrated that arsenic can be effectively stabilized by first converting it to an arsenate form, then dissolving it in a slag matrix. Further kinetic limitations can be imposed on arsenic release by encapsulating the arsenic bearing slag in cements, concretes, and mortars. Aqueous extraction results indicate minimal release.
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