Multiple sorption-desorption cycles of Cu(II)/Ni(II) ions in a fixed-bed column by Sargassum sp. biomass
Résumé
The objective ofthis work was to study the biosorption/desorption of copper and nickel ions and their mixture using the acidified seaweed Sargassum sp. Biomass as biosorbents. Three sorption-desorption cycles where operated on both monometallic and bimetallic Cu(II) and Ni(II) solutions. For bimetallic bioadsorption, the phenomenon of the sequential change was observed: the more selective cation, Cu(II), remove and replace the other cation, Ni(II) previously sorbed. The breakthrough curves show the same behavior over the three successive sorption/desorption cycles. Ninety percent of elution happened in the first 20 min.
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