Application of fly ash/chitosan composites for heavy metal adsorption

• Autorzy: Osmani Egzona , Dimitrievska Iva , Paunovik Perica , Atkovska Katerina , Rexhepi Fatos , Grozdanov Anita

Identyfikatory

DOI

10.62753/ctp.2024.02.2.2

• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to investigate the potential of modified fly ash (FA) as an adsorbent for the removal of heavy metal ions from polluted waters. The effectiveness of unmodified FA was compared to FA modified with chitosan. The FA and FA/chitosan particles were characterized by means of SEM, XRF and FTIR methods. The FA and FA/chitosan composites were investigated as adsorbents for Cu(II) and Pb(II) ions from aqueous solutions. Experiments were carried out in a previously optimized pH (pH = 6), at room temperature for 3 hours. Langmuir and Freundlich isotherms were used to determine the maximum adsorption capacities of the fly ash samples for Cu(II) and Pb(II) ions. The experimental data indicate that the Langmuir isotherm fits better than the Freundlich isotherm for all the investigated systems. The obtained values of the qm, maximum adsorption capacity for the removal of Cu(II) and Pb(II) with the FA/chitosan composites were (1.068, 1.00, 1.042, 1.369 mg/g), and (2.532, 2.063, 1.036, 2.146, 2.482 mg/g), respectively. The efficiency trend was Pb(II) > Cu(II). The results indicate that the removal efficiency for Cu(II) and Pb(II) ions was 91.1 % and 99.7 %, respectively.

Słowa kluczowe

EN

adsorption; chitosan; composites; fly ash; heavy metals; modification

PL

adsorpcja; chitozan; kompozyty; popiół lotny; metale ciężkie; modyfikacja

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2024
• Tom: R. 24, nr 2
• Strony: 87--94
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Osmani Egzona

• University “Ss Cyril and Methodius” in Skopje, Faculty of Technology and Metallurgy, Rudjer Bošković Str.,16, Skopje 1000, North Macedonia

autor

Dimitrievska Iva

• University “Ss Cyril and Methodius” in Skopje, Faculty of Technology and Metallurgy, Rudjer Bošković Str.,16, Skopje 1000, North Macedonia

autor

Paunovik Perica

• University “Ss Cyril and Methodius” in Skopje, Faculty of Technology and Metallurgy, Rudjer Bošković Str.,16, Skopje 1000, North Macedonia

autor

Atkovska Katerina

• University “Ss Cyril and Methodius” in Skopje, Faculty of Technology and Metallurgy, Rudjer Bošković Str.,16, Skopje 1000, North Macedonia

autor

Rexhepi Fatos

• University “Isa Boletini” Mitrovicë, Faculty of Food Technology, Ukshin Kovaçica, Str. N.N. 40000, Mitrovica, Republic of Kosova

autor

Grozdanov Anita

• University “Ss Cyril and Methodius” in Skopje, Faculty of Technology and Metallurgy, Rudjer Bošković Str.,16, Skopje 1000, North Macedonia

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