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Yang, X. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States.

Koziel, J.A. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States; Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States; Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States.  

 Zhu, W. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States.  

 van Leeuwen, J. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States; Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States; Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States.  

 Jenks, W.S. - Department of Chemistry, Iowa State University, Ames, IA 50011, United States.  

 Hoff, S.J. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States.

Zimmerman, J. - Department of Veterinary Diagnostic and Prod, Animal Medicine, Iowa State University, Ames, IA 50010, United States.  

 Zhang, S. - Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China.

 Armon, R. - Faculty of Civil and Environmental Engineering, Technion, Haifa, 32000, Israel.

 

Control of gaseous emissions from livestock operations is needed to ensure compliance with environmental regulations and sustainability of the industry. The focus of this research was to mitigate livestock odor emissions with UV light. Effects of the UV dose, wavelength, TiO2 catalyst, air temperature, and relative humidity were tested at lab scale on a synthetic mixture of nine odorous volatile organic compounds (VOCs) and real poultry manure offgas. Results show that it was feasible to control odorous VOCs with both photolysis and photocatalysis (synthetic VOCs mixture) and with photocatalysis (manure offgas). The treatment effectiveness R (defined as % conversion), was proportional to the light intensity for synthetic VOCs mixtures and followed an order of UV185+254 + TiO2 > UV254 + TiO2 > UV185+254; no catalyst > UV254; no catalyst. VOC conversion R > 80% was achieved when light energy was >~60 J L−1. The use of deep UV (UV185+254) improved the R, particularly when photolysis was the primary treatment. Odor removal up to ~80% was also observed for a synthetic VOCs mixture, and actual poultry manure offgas. Scale-up studies are warranted.

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תנאי שימוש
VOC removal from manure gaseous emissions with UV photolysis and UV-TiO2 photocatalysis
10

Yang, X. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States.

Koziel, J.A. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States; Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States; Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States.  

 Zhu, W. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States.  

 van Leeuwen, J. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States; Iowa State University, Ames, IA 50011, United States; Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States; Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States.  

 Jenks, W.S. - Department of Chemistry, Iowa State University, Ames, IA 50011, United States.  

 Hoff, S.J. - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States.

Zimmerman, J. - Department of Veterinary Diagnostic and Prod, Animal Medicine, Iowa State University, Ames, IA 50010, United States.  

 Zhang, S. - Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China.

 Armon, R. - Faculty of Civil and Environmental Engineering, Technion, Haifa, 32000, Israel.

 

VOC removal from manure gaseous emissions with UV photolysis and UV-TiO2 photocatalysis

Control of gaseous emissions from livestock operations is needed to ensure compliance with environmental regulations and sustainability of the industry. The focus of this research was to mitigate livestock odor emissions with UV light. Effects of the UV dose, wavelength, TiO2 catalyst, air temperature, and relative humidity were tested at lab scale on a synthetic mixture of nine odorous volatile organic compounds (VOCs) and real poultry manure offgas. Results show that it was feasible to control odorous VOCs with both photolysis and photocatalysis (synthetic VOCs mixture) and with photocatalysis (manure offgas). The treatment effectiveness R (defined as % conversion), was proportional to the light intensity for synthetic VOCs mixtures and followed an order of UV185+254 + TiO2 > UV254 + TiO2 > UV185+254; no catalyst > UV254; no catalyst. VOC conversion R > 80% was achieved when light energy was >~60 J L−1. The use of deep UV (UV185+254) improved the R, particularly when photolysis was the primary treatment. Odor removal up to ~80% was also observed for a synthetic VOCs mixture, and actual poultry manure offgas. Scale-up studies are warranted.

Scientific Publication
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