Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight
Background and aims: Due to their toxicity and carcinogenic effects, polycyclic aromatic hydrocarbons (PAHs) such as naphthalene (C10H8 ) are regarded as hazardous compounds for both humans and the environment, and it is essential to remove these contaminants from the environment. The present study...
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| Format: | Article |
| Language: | English |
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Shahrekord University of Medical Sciences
2021-03-01
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| Series: | Journal of Shahrekord University of Medical Sciences |
| Subjects: | |
| Online Access: | http://j.skums.ac.ir/PDF/jskums-23-34.pdf |
| _version_ | 1818332933523505152 |
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| author | Abbas Jafari Mehrban Sadeghi Farhang Tirgir Mehdi Barghaei |
| author_facet | Abbas Jafari Mehrban Sadeghi Farhang Tirgir Mehdi Barghaei |
| author_sort | Abbas Jafari |
| collection | DOAJ |
| description | Background and aims: Due to their toxicity and carcinogenic effects, polycyclic aromatic hydrocarbons (PAHs) such as naphthalene (C10H8 ) are regarded as hazardous compounds for both humans and the environment, and it is essential to remove these contaminants from the environment. The present study aimed to remove naphthalene from a synthetic aqueous environment using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) nanoparticles (NPs) immobilized on glass microbullets under sunlight. Methods: In this experimental study, TiO2 -N-S NPs were synthesized using sol-gel process. The structure of NPs was investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray (EDX), and differential reflectance spectroscopy (DRS). In addition, using statistical analyses, the effects of parameters such as the initial concentration of naphthalene, pH, contact time, and the optimal conditions on naphthalene removal were investigated. Results: XRD patterns and SEM images of the samples confirmed the size of synthesized particles in nanometer. The EDX and DRS spectra analysis showed the presence of two elements (sulfur and nitrogen) and the optical photocatalytic activity in the visible region, respectively. The maximum level of naphthalene removal in the presence of sunlight was obtained to be about 93.55% using a concentration of 0.25 g of thiourea immobilized on glass microbullets at pH=5 and contact time of 90 minutes. Conclusion: The rate of naphthalene removal using the immobilized TiO2 -N-S on glass microbullets was 93.55% in optimal conditions. Therefore, this method has an effective potential for naphthalene removal, and can be used to remove naphthalene from industrial wastewater. |
| first_indexed | 2024-12-13T13:43:37Z |
| format | Article |
| id | doaj.art-60aea5046843456da25beb677c59ff93 |
| institution | Directory Open Access Journal |
| issn | 2717-0071 |
| language | English |
| last_indexed | 2024-12-13T13:43:37Z |
| publishDate | 2021-03-01 |
| publisher | Shahrekord University of Medical Sciences |
| record_format | Article |
| series | Journal of Shahrekord University of Medical Sciences |
| spelling | doaj.art-60aea5046843456da25beb677c59ff932022-12-21T23:43:30ZengShahrekord University of Medical SciencesJournal of Shahrekord University of Medical Sciences2717-00712021-03-01231344310.34172/jsums.2021.06jskums-266Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlightAbbas Jafari0Mehrban Sadeghi1Farhang Tirgir2Mehdi Barghaei3PhD Candidate in Environmental Engineering, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Branch, Tehran, IranPhD Candidate in Environmental Engineering, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Branch, Tehran, IranPhD Candidate in Environmental Engineering, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Branch, Tehran, IranProfessor of Environmental Engineering, Department of Chemistry and Environment, Technical and Engineering Faculty, Sharif University of Technology, Tehran, IranBackground and aims: Due to their toxicity and carcinogenic effects, polycyclic aromatic hydrocarbons (PAHs) such as naphthalene (C10H8 ) are regarded as hazardous compounds for both humans and the environment, and it is essential to remove these contaminants from the environment. The present study aimed to remove naphthalene from a synthetic aqueous environment using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) nanoparticles (NPs) immobilized on glass microbullets under sunlight. Methods: In this experimental study, TiO2 -N-S NPs were synthesized using sol-gel process. The structure of NPs was investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray (EDX), and differential reflectance spectroscopy (DRS). In addition, using statistical analyses, the effects of parameters such as the initial concentration of naphthalene, pH, contact time, and the optimal conditions on naphthalene removal were investigated. Results: XRD patterns and SEM images of the samples confirmed the size of synthesized particles in nanometer. The EDX and DRS spectra analysis showed the presence of two elements (sulfur and nitrogen) and the optical photocatalytic activity in the visible region, respectively. The maximum level of naphthalene removal in the presence of sunlight was obtained to be about 93.55% using a concentration of 0.25 g of thiourea immobilized on glass microbullets at pH=5 and contact time of 90 minutes. Conclusion: The rate of naphthalene removal using the immobilized TiO2 -N-S on glass microbullets was 93.55% in optimal conditions. Therefore, this method has an effective potential for naphthalene removal, and can be used to remove naphthalene from industrial wastewater.http://j.skums.ac.ir/PDF/jskums-23-34.pdfsunlightaromatic hydrocarbonsnaphthaleneglass microbulletstio2 -n-s nanoparticles |
| spellingShingle | Abbas Jafari Mehrban Sadeghi Farhang Tirgir Mehdi Barghaei Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight Journal of Shahrekord University of Medical Sciences sunlight aromatic hydrocarbons naphthalene glass microbullets tio2 -n-s nanoparticles |
| title | Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight |
| title_full | Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight |
| title_fullStr | Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight |
| title_full_unstemmed | Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight |
| title_short | Photocatalytic removal of naphthalene (C10H8 ) from aqueous environments using sulfur and nitrogen doped titanium dioxide (TiO2 -N-S) coated on glass microbullets in presence of sunlight |
| title_sort | photocatalytic removal of naphthalene c10h8 from aqueous environments using sulfur and nitrogen doped titanium dioxide tio2 n s coated on glass microbullets in presence of sunlight |
| topic | sunlight aromatic hydrocarbons naphthalene glass microbullets tio2 -n-s nanoparticles |
| url | http://j.skums.ac.ir/PDF/jskums-23-34.pdf |
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