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Solubility and selectivity effects of the anion on the adsorption of different heavy metal ions onto chitosan
Authors
Regine Boldt
Alexander Gündel
+6 more
Martin Müller
Dana Schwarz
Simona Schwarz
Christine Steinbach
David Vehlow
Janek Weißpflog
Publication date
1 January 2020
Publisher
Basel : MDPI
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Abstract
The biopolymer chitosan is a very efficient adsorber material for the removal of heavy metal ions from aqueous solutions. Due to the solubility properties of chitosan it can be used as both a liquid adsorber and a solid flocculant for water treatment reaching outstanding adsorption capacities for a number of heavy metal ions. However, the type of anion corresponding to the investigated heavy metal ions has a strong influence on the adsorption capacity and sorption mechanism on chitosan. In this work, the adsorption capacity of the heavy metal ions manganese, iron, cobalt, nickel, copper, and zinc were investigated in dependence on their corresponding anions sulfate, chloride, and nitrate by batch experiments. The selectivity of the different heavy metal ions was analyzed by column experiments. © 2020 by the authors
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Last time updated on 23/07/2022