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:: Volume 4, Number 1 (Winter, 2017) ::
Back to browse issues page EHEMJ 2017, 4(1): 7-14
Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation
Amirreza Talaiekhozani , Zeinab Eskandari, Mohammad Reza Talaei, Malihe Salari
Corresponding Author: Assistant Professor, Civil Engineering Department, Jami Institute of Technology, Isfahan, Iran , atalaie@jami.ac.ir
Abstract:   (481 Views)

 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.

Keywords: Ferrate (VI), Hydrogen sulfide removal, Organic compounds removal, Ultraviolet
eprint link: http://eprints.kmu.ac.ir/id/eprint/26168
Full-Text [PDF 1032 kb]   (366 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/02/25 | Accepted: 2017/02/25 | Published: 2017/02/25
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DOI: 10.15171/EHEM.2017.02


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Talaiekhozani A, Eskandari Z, Talaei M R, Salari M. Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation. EHEMJ. 2017; 4 (1) :7-14
URL: http://ehemj.com/article-1-231-en.html
Back to browse issues page Volume 4, Number 1 (Winter, 2017)
مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
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