Evaluation of gas retention time effects on the bio-trickling filter reactor performance for treating air contaminated with formaldehyde

Fulazzaky, Mohamad Ali; Talaiekhozani, Amirreza; Majid, Muhd Zaimi Abd; Ponraj, Mohanadoss; Goli, Amin

doi:10.1039/c3ra41391h

Cited by 14 publications

(1 citation statement)

References 25 publications

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“…UV alone was able to remove 89% and 85% of COD and hydrogen sulfide, respectively. Although several methods such as biological methods have been utilized for the removal of both hydrogen sulfide and COD (3,18,19), the use of UV is much simpler. UV light is powerful electromagnetic radiation with a wavelength of 10-380 nm.…”

Section: Uvmentioning

confidence: 99%

Removal of H2S and COD Using UV, Ferrate and UV/Ferrate from Municipal Wastewater

Talaiekhozani¹,

Eskandari²,

Bagheri³

et al. 2016

J. Hum. Environ. Health Promot.

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Journal homepage: www.zums.ac.ir/jhehp Background: The aim of this study is to compare UV, ferrate (VI) and UV/ferrate (VI) methods for removal of hydrogen sulfide and chemical oxygen demand (COD) from municipal wastewater under a continuous condition. Methods: The experiment was divided into three parts: 1) pollutants removal by using ferrate (VI) alone; 2) pollutants removal using UV alone; 3) pollutants removal using a combination of UV/ferrate (VI). The electrolysis process was utilized to generate ferrate (VI). Results: The results showed that UV had the highest pollutants removal, so that 89% and 85% of hydrogen sulfide and COD were removed from the wastewater, respectively. UV/ferrate (VI) ranked as the next most efficient method. This method removed 65% and 73% of hydrogen sulfide and COD, respectively from the wastewater. Conclusion: Using ferrate (VI) alone had the lowest pollutant removal efficiency, with 41% and 48% of hydrogen sulfide and COD removal from wastewater, respectively. UV has a higher ability to remove hydrogen sulfide and COD from wastewater, compared with UV/ferrate (VI) and ferrate (VI) alone.

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Section: Uvmentioning

confidence: 99%