Batch-wise adsorption, saxs and microscopic studies of zeolite pelletized with biopolymeric alginate

Author(s)

Eva Chmielewska, Lenka Sabová, Herwig Peterlik, Aiying Wu

Abstract

Removal of nitrates, sulfate and Zn(II) ions

from aqueous solutions through adsorption onto

biopolymeric alginate/clinoptilolite-rich tuff

pellets was studied by using an equilibrium

batch technique. The idea of this approach of

biosorbent fabrication is to promote the

native zeolite adsorption performance and thus

to prepare more efficient amphoteric

tailor-made products for specific

environmental targets. A flexible

component, i.e., alginate biopolymer, and a

rigid component (pulverized) zeolite were

crosslinked using Fe(III) and Ca(II)chlorides,

additively. The extent of adsorption was found

to be considerably higher than with the other

mostly natural adsorbents examined towards

similar pollutants. The equilibrium adsorption

data for the above pollutants were satisfactorily

fitted to Freundlich and Langmuir isotherms,

respectively. According to the linscale SAXS

pattern, there was a strong background

visible, which may indicate the presence of a

considerable amount of biopolymeric phase in

the composite samples analysed. Scanning

Tunneling, Electron and Atomic Force

Microscopies helped visualize their surface

texture and morphology.

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

Comenius University Bratislava, Biont, University of Aveiro

Journal

Brazilian Journal of Chemical Engineering

Volume

28

Pages

63-71

No. of pages

9

ISSN

0104-6632

DOI

https://doi.org/10.1590/S0104-66322011000100008

Publication date

2011

Peer reviewed

Yes

Austrian Fields of Science 2012

103015 Condensed matter, 103018 Materials physics

Portal url

https://ucris.univie.ac.at/portal/en/publications/batchwise-adsorption-saxs-and-microscopic-studies-of-zeolite-pelletized-with-biopolymeric-alginate(c2537aed-91c0-41e1-a814-48de3e169446).html