Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

The performance of TiO2/NaY-zeolite nanocomposite in photocatalytic degradation of Microcystin-LR from aqueous solutions: Optimization by response surface methodology (RSM)

Mon Nov 28 12:43:28 2022

(2020) The performance of TiO2/NaY-zeolite nanocomposite in photocatalytic degradation of Microcystin-LR from aqueous solutions: Optimization by response surface methodology (RSM). Environmental Health Engineering and Management Journal. pp. 245-256. ISSN 2423-3765

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Abstract

Background: Microcystin (MC) is a hepatotoxic and carcinogenic toxin that is generated by cyanotoxins which can have adverse effects on the human health. Therefore, it is very important to remove it from the environment. This study was performed to investigate the efficiency of titanium dioxide (TiO2)/NaY-zeolite (T/N-Z) nanocomposite for removal of MC-LR under ultraviolet light. Methods: In the present study, T/N-Z nanocomposite was synthesized using the hydrothermal method. Specification of the photocatalysts was determined by the field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) spectra. The response surface methodology (RSM) was used to survey the effects of operating variables such as pH, contact time, and catalyst dose on the removal of MC-LR. The MC-LR concentration was measured by high-performance liquid chromatography (HPLC). Results: It was revealed that the increase of contact time and catalyst dose had a positive effect on enhancing the removal efficiency of MC-LR, but pH had a negative effect. Finally, the maximum MC-LR removal efficiency was 97.63, which occurred at pH = 5, contact time = 120 min, and catalyst dose = 1.2 g/L. Conclusion: In general, T/N-Z composite in aqueous solutions under the UV light can easily decompose MC-LR and it can also be proposed as an efficient composite for removal of MC-LR from contaminated water.

Item Type: Article
Creators:
CreatorsEmail
Ebrahimi, A.UNSPECIFIED
Jafari, N.UNSPECIFIED
Ebrahimpour, K.UNSPECIFIED
Nikoonahad, A.UNSPECIFIED
Mohammadi, A.UNSPECIFIED
Fanaei, F.UNSPECIFIED
Abdolahnejad, A.UNSPECIFIED
Keywords: Microcystin Titanium dioxide Zeolite Photocatalytic degradation High-performance liquid chromatography removal water tio2 photodegradation nanoparticles construction aeruginosa kinetics blooms blue Environmental Sciences & Ecology
Divisions:
Page Range: pp. 245-256
Journal or Publication Title: Environmental Health Engineering and Management Journal
Journal Index: ISI
Volume: 7
Number: 4
Identification Number: https://doi.org/10.34172/ehem.2020.29
ISSN: 2423-3765
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/3364

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