Effect of beading parameters on cross-linked chitosan adsorptive properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F19%3A43956221" target="_blank" >RIV/49777513:23640/19:43956221 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.reactfunctpolym.2019.104354" target="_blank" >https://doi.org/10.1016/j.reactfunctpolym.2019.104354</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.reactfunctpolym.2019.104354" target="_blank" >10.1016/j.reactfunctpolym.2019.104354</a>
Alternative languages
Result language
angličtina
Original language name
Effect of beading parameters on cross-linked chitosan adsorptive properties
Original language description
Among countless applications, chitosan has the potential to be an effective and cheap adsorbent for pollutant removal in (waste) water. In form of beads, it also exhibits good mechanical and fluid dynamic properties that are suitable for utilization in large-scale adsorption processes (e.g. as column packing). The present study investigates the beading process to prepare chitosan and cross-linked chitosan beads by phase inversion method. Beading parameters (i.e. chitosan amount, acid concentration, non-solvent agent concentration, and temperature) are optimized to obtain an appropriate adsorbent structure to uptake large organic molecules (reactive red 2, a dye, is utilized as model pollutant). Chitosan beads present remarkably enhanced adsorption capacity, mainly thanks to increased specific surface area and porosity. The addition of a cross-linker (diepoxyoctane) further improves pollutant removal. The adsorption process is well-fitted by the Freundlich model, suggesting a multilayer adsorption. The kinetic study also substantiates the complexity of the adsorption mechanism on bead surface, which, however, is satisfactorily predicted by a simple fractal kinetic model. Finally, it is proved that chitosan and cross-linked chitosan beads can be recycled (by washing with NaOH solution) at least 5 times before sensible performance loss.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/LO1402" target="_blank" >LO1402: CENTEM+</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
REACTIVE & FUNCTIONAL POLYMERS
ISSN
1381-5148
e-ISSN
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Volume of the periodical
144
Issue of the periodical within the volume
November 2019
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
"NESTRÁNKOVÁNO"
UT code for WoS article
000497248900009
EID of the result in the Scopus database
2-s2.0-85071853413