Adsorption of Formaldehyde from Aqueous Solutions Using Metakaolin-Based Geopolymer Sorbents
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918946" target="_blank" >RIV/60461373:22310/19:43918946 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1134%2FS2070205119050198" target="_blank" >https://link.springer.com/article/10.1134%2FS2070205119050198</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S2070205119050198" target="_blank" >10.1134/S2070205119050198</a>
Alternative languages
Result language
angličtina
Original language name
Adsorption of Formaldehyde from Aqueous Solutions Using Metakaolin-Based Geopolymer Sorbents
Original language description
Abstract: Geopolymer samples prepared through alkali activation of metakaolin under varying conditions of synthesis (100°C (14 h); 130°C (3 h); clinoptilolite filler) are employed as formaldehyde sorbents from aqueous solutions. The structure and physicochemical properties of geopolymer sorbents are studied using XRD, XRF, SEM, N2 adsorption–desorption, and chemical methods. Zeolite A is the main component among the structural components in the synthesized specimens (zeolite А, hydroxysodalite, and quartz). Addition of the clinoptilolite filler in the synthesis of geopolymers has resulted in a slight increase in their specific surface and pore volume. Geopolymer sorbent specimens display strong adsorption ability in relation to sorbate molecules in aqueous solutions of formaldehyde (0.064–0.366 M). The cation-exchange capacity of the geopolymers, which is 2–3 times as large as that of the natural clinoptilolite specimen, is the probable reason of their strong adsorption capacity to formaldehyde. The nature of the exchanged cation (Na+, NH4 +-,$$ Cu2+) determines the magnitude and the predominant mechanism of sorption uptake of formaldehyde (physical adsorption, chemisorption, and complexation). Higher adsorption values of formaldehyde are obtained in the case of NH4 +- and Cu2+-forms of geopolymer sorbents compared to the Na+-form. © 2019, Pleiades Publishing, Ltd.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA16-13778S" target="_blank" >GA16-13778S: Waste ceramics as selective sorbent of toxic ions: characterization, methodology and application</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
Protection of Metals and Physical Chemistry of Surfaces
ISSN
2070-2051
e-ISSN
—
Volume of the periodical
55
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
864-871
UT code for WoS article
000490601200009
EID of the result in the Scopus database
2-s2.0-85073621257