Freeze-Drying as the Post-Processing Technique Improving Adsorptive Properties of Waste Fe/Mn Oxides Entrapped in Polymer Beads Towards As(III) and As(V)
Daniel Ociński , Irena Jacukowicz-Sobala , Elżbieta Kociołek-Balawejder
AbstractThe freeze-drying was tested as the post-processing technique allowing the improvement of the accessibility of active sites of the hybrid sorbent containing Fe/Mn oxides within polymer matrix. The influence of freeze-drying on the morphology of the sorbent and on its adsorptive properties towards arsenate and arsenite was studied in detail. The sorbent was characterized by a highly porous structure, large surface area (73.4 m2/g), and excellent adsorption properties towards both arsenate and arsenite. Its maximal adsorption capacity, determined in equilibrium studies, was 26.2 mg As(III)/g and 21.7 mg As(V)/g. Moreover, the physical form of the product allowed its application in a fixed-bed adsorption system.
|Journal series||Separation Science and Technology, ISSN 0149-6395, e-ISSN 1520-5754, (N/A 40 pkt)|
|Keywords in English||Arsenic, Adsorption, Alginate, Water Treatment Residuals, Iron Oxides|
|ASJC Classification||; ; ;|
|Publication indicators||= 2; : 2016 = 0.577; : 2018 = 1.354 (2) - 2018=1.382 (5)|
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