Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Arsenic adsorption over dodecahedra ZIF-8 from solution aqueous: modelling, isotherms, kinetics and thermodynamics

(2020) Arsenic adsorption over dodecahedra ZIF-8 from solution aqueous: modelling, isotherms, kinetics and thermodynamics. International Journal of Environmental Analytical Chemistry.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Arsenic is one of the major pollutants in water resources which are highly toxic to consumers. Recently, a new class of adsorbents has been used to remove environmental pollutants such as Zeolite iImidazole Frameworks (ZIF-8). The aim of this study was to synthesise ZIF-8 and optimise for arsenic adsorption. The prepared ZIF-8 was characterised by FTIR, XRD, EDX, FE-SEM, and BET surface area. The ZIF-8 performance was assessed for variables such as initial arsenic concentration, pH, adsorbent dosage, and contact time. To measure the residual arsenic concentration, ICP-OES was used. Morphology of the synthesised ZIF-8 was dodecahedral. The particle size of synthesised ZIF-8 was in the range of 420 nm to 744 nm. The surface area of dodecahedral-ZIF-8 was 1566 m2 g−1. The study findings showed that experimental data could be well represented by the pseudo-second-order model and the Langmuir isotherm model. The arsenic adsorption on ZIF-8 was endothermic. The results of this study showed that ZIFs can be used to remove environmental pollutants effectively. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Article
Keywords: Adsorption Arsenic Water treatment zeolite imidazole framework ZIF-8
Subjects: WA Public Health > WA 670-847 Environmental Pollution. Sanitation
Divisions: Research Vice-Chancellor Department > Environmental Health Research Center
Journal or Publication Title: International Journal of Environmental Analytical Chemistry
Journal Index: ISI, Scopus
Publisher: Taylor and Francis Ltd.
Identification Number: 10.1080/03067319.2020.1727458
ISSN: 03067319
Depositing User: دکتر علیرضا غریب
URI: http://eprints.muk.ac.ir/id/eprint/4673

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