Recovery of Au(III) in hydrochloric acid using grape waste was studied. The adsorption gel prepared from grape waste was found to highly selectively adsorb Au(III) showing negligible affinity for other precious metals and some base metal ions tested so far. The adsorption isotherm study exhibited the maximum loading capacity of the gel as high as 9.6mol or 1.9kg gold per kg dry weight of gel. XRD...
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