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Environmental Health Engineering and Management، جلد ۷، شماره ۴، صفحات ۲۴۵-۲۵۶
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| عنوان انگلیسی |
The performance of TiO2/NaY-zeolite nanocomposite in photocatalytic degradation of Microcystin-LR from aqueous solutions: Optimization by response surface methodology (RSM) |
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| چکیده انگلیسی مقاله |
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 MCLR 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. |
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| کلیدواژه‌های انگلیسی مقاله |
Microcystin, Titanium dioxide, Zeolite, Photocatalytic degradation, High-performance liquid chromatography |
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| نویسندگان مقاله |
| Afshin Ebrahimi
Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| Negar Jafari
Corresponding author: Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| Karim Ebrahimpour
Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| Ali Nikoonahad
Department of Environmental Health Engineering, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran
| Amir Mohammadi
Department of Public Health, Maragheh University of Medical Sciences, Maragheh, Iran
| Farzad Fanaei
Department of Environmental Health Engineering, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran
| Ali Abdolahnejad
Corresponding author: Department of Public Health, Maragheh University of Medical Sciences, Maragheh, Iran
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| نشانی اینترنتی |
http://ehemj.com/browse.php?a_code=A-10-1-188&slc_lang=en&sid=1 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
عمومی |
| نوع مقاله منتشر شده |
مقاله اصیل |
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