Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation
Background: In this study, ferrate (VI) and ultraviolet (UV) radiation were employed to remove hydrogen sulfide from municipal wastewater resulting in a reduction in chemical oxygen demand (COD). Although ferrate (VI) and UV have been used individually for the removal of a few pollutants from urba...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Kerman University of Medical Sciences
2017-02-01
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| Series: | Environmental Health Engineering and Management |
| Subjects: | |
| Online Access: | http://ehemj.com/article-1-231-en.html |
| _version_ | 1818918078877007872 |
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| author | Amirreza Talaiekhozani Zeinab Eskandari Marzieh Bagheri Mohammad Reza Talaei Malihe Salari |
| author_facet | Amirreza Talaiekhozani Zeinab Eskandari Marzieh Bagheri Mohammad Reza Talaei Malihe Salari |
| author_sort | Amirreza Talaiekhozani |
| collection | DOAJ |
| description | Background: In this study, ferrate (VI) and ultraviolet (UV) radiation were employed to remove
hydrogen sulfide from municipal wastewater resulting in a reduction in chemical oxygen demand (COD).
Although ferrate (VI) and UV have been used individually for the removal of a few pollutants from urban and industrial wastewater, there exists no study to investigate the effectiveness of simultaneous utilization of both methods for the removal of hydrogen sulfide and reducing COD.
Methods: This study aims to compare the application of UV, ferrate (VI) and UV/ferrate (VI) for the removal of hydrogen sulfide and COD from municipal wastewater in batch mode. Moreover, the effect of many parameters such as ferrate (VI) concentration, temperature, hydraulic retention time (HRT) and pH on ferrate (VI) oxidation power, were investigated.
Results: The results of this study demonstrated that for pH less than 2, higher pollutant removal efficiency was obtained. COD removal efficiency could increase up to 68% by adding 1.68 mg/L of ferrate (VI), almost 100% of hydrogen sulfide was removed by the same concentration of ferrate (VI). Both hydrogen sulfide and COD removal efficiencies increased as temperature increased to 50°C;nevertheless, further increase in temperature had negative effect on the removal efficiency. The use of UV/ferrate (VI) increased the removal efficiency of both hydrogen sulfide and COD when compared
with the use of UV and ferrate (VI) individually. UV method was not effective in the removal of
hydrogen sulfide.
Conclusion: The research findings shed new light on wastewater treatment systems employing UV/ ferrate (VI) to decrease both the hydrogen sulfide and COD of municipal wastewater. This new findings will assist in the inaccurate design and effective operation of such systems which can be employed to maintain or improve environmental quality |
| first_indexed | 2024-12-20T00:44:15Z |
| format | Article |
| id | doaj.art-7278f65e71744488bc2619993bad69b1 |
| institution | Directory Open Access Journal |
| issn | 2423-3765 2423-3765 |
| language | English |
| last_indexed | 2024-12-20T00:44:15Z |
| publishDate | 2017-02-01 |
| publisher | Kerman University of Medical Sciences |
| record_format | Article |
| series | Environmental Health Engineering and Management |
| spelling | doaj.art-7278f65e71744488bc2619993bad69b12022-12-21T19:59:27ZengKerman University of Medical SciencesEnvironmental Health Engineering and Management2423-37652423-37652017-02-014171410.15171/EHEM.2017.02Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiationAmirreza Talaiekhozani0Zeinab Eskandari1Marzieh Bagheri2Mohammad Reza Talaei3Malihe Salari4Assistant Professor, Civil Engineering Department, Jami Institute of Technology, Isfahan, IranMSc Student, Chemical Engineering Department, Jami Institute of Technology, Isfahan, IranAssistant Professor, Chemical Engineering Department, Jami Institute of Technology, Isfahan, IranAssociate Professor, Chemical Engineering Department, Shiraz University, Shiraz, IranMSc Student, Civil Engineering Department, Jami Institute of Technology, Isfahan, IranBackground: In this study, ferrate (VI) and ultraviolet (UV) radiation were employed to remove hydrogen sulfide from municipal wastewater resulting in a reduction in chemical oxygen demand (COD). Although ferrate (VI) and UV have been used individually for the removal of a few pollutants from urban and industrial wastewater, there exists no study to investigate the effectiveness of simultaneous utilization of both methods for the removal of hydrogen sulfide and reducing COD. Methods: This study aims to compare the application of UV, ferrate (VI) and UV/ferrate (VI) for the removal of hydrogen sulfide and COD from municipal wastewater in batch mode. Moreover, the effect of many parameters such as ferrate (VI) concentration, temperature, hydraulic retention time (HRT) and pH on ferrate (VI) oxidation power, were investigated. Results: The results of this study demonstrated that for pH less than 2, higher pollutant removal efficiency was obtained. COD removal efficiency could increase up to 68% by adding 1.68 mg/L of ferrate (VI), almost 100% of hydrogen sulfide was removed by the same concentration of ferrate (VI). Both hydrogen sulfide and COD removal efficiencies increased as temperature increased to 50°C;nevertheless, further increase in temperature had negative effect on the removal efficiency. The use of UV/ferrate (VI) increased the removal efficiency of both hydrogen sulfide and COD when compared with the use of UV and ferrate (VI) individually. UV method was not effective in the removal of hydrogen sulfide. Conclusion: The research findings shed new light on wastewater treatment systems employing UV/ ferrate (VI) to decrease both the hydrogen sulfide and COD of municipal wastewater. This new findings will assist in the inaccurate design and effective operation of such systems which can be employed to maintain or improve environmental qualityhttp://ehemj.com/article-1-231-en.htmlFerrate (VI)Hydrogen sulfide removalOrganic compounds removalUltravioleUltraviolet |
| spellingShingle | Amirreza Talaiekhozani Zeinab Eskandari Marzieh Bagheri Mohammad Reza Talaei Malihe Salari Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation Environmental Health Engineering and Management Ferrate (VI) Hydrogen sulfide removal Organic compounds removal Ultraviole Ultraviolet |
| title | Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation |
| title_full | Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation |
| title_fullStr | Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation |
| title_full_unstemmed | Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation |
| title_short | Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation |
| title_sort | hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate vi and ultraviolet radiation |
| topic | Ferrate (VI) Hydrogen sulfide removal Organic compounds removal Ultraviole Ultraviolet |
| url | http://ehemj.com/article-1-231-en.html |
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