VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide
Abstract Rendering plants treat dead livestock and produce grease and bone meal. In a rendering plant, the cooking and drying processes are the main sources of odor emissions. Non-fresh dead livestock reduce the performance of odor control devices, and in Taiwan, t he treatment facilities in a rende...
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| Format: | Article |
| Language: | English |
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Springer
2023-02-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.220440 |
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| author | Wen-Hsi Cheng Chun-Hung Lin Chung-Shin Yuan Ken-Lin Chang |
| author_facet | Wen-Hsi Cheng Chun-Hung Lin Chung-Shin Yuan Ken-Lin Chang |
| author_sort | Wen-Hsi Cheng |
| collection | DOAJ |
| description | Abstract Rendering plants treat dead livestock and produce grease and bone meal. In a rendering plant, the cooking and drying processes are the main sources of odor emissions. Non-fresh dead livestock reduce the performance of odor control devices, and in Taiwan, t he treatment facilities in a rendering plant mostly are operated in a batch feeding, which causes volatile organic compound (VOC) emissions in the exhausted gas, that always caused complaints from the nearby neighborhood. This study used respectively ozone and hydrogen peroxide to evaluate the removal efficiencies of pentanal, hexanal and toluene those are common VOCs in the rendering exhaustion. Experimental results indicated that ozone could not effectively reduce aldehydes and toluene, and the residual ozone remaining in the exhaust gas is a secondary air pollutant and irritate the human respiratory tracts. Oppositely, hydrogen peroxide effectively removed pentanal as a feasible VOC treatment oxidant by adding into a contact reactor. When the pentanal exhaustion concentration from the rendering process was around 36.23 ppm in the flue with the flow rates from 100 to 250 Nm3 min−1, the reaction rate constant of pentanal for the first-order reaction by aqueous hydrogen peroxide of 1,000 mg L−1 was obtained as 0.536 1 s−1, and then the pentanal reduced to 0.68 to 2 ppm. Based on the simulation using the Gaussian dispersion model, the concentration ranges of pentanal in the exhausted stream resulted in the pentanal emission rate lower than 0.01 g s−1, which no longer causes surrounding residents’ complaints. |
| format | Article |
| id | doaj-art-b49d8969ba104beeb3c1d9173e34860e |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2023-02-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-b49d8969ba104beeb3c1d9173e34860e2025-02-09T12:21:54ZengSpringerAerosol and Air Quality Research1680-85842071-14092023-02-0123411010.4209/aaqr.220440VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen PeroxideWen-Hsi Cheng0Chun-Hung Lin1Chung-Shin Yuan2Ken-Lin Chang3Department of Occupational Safety and Hygiene, Fooyin UniversityInstitute of Environmental Engineering, National Sun Yat-Set UniversityInstitute of Environmental Engineering, National Sun Yat-Set UniversityInstitute of Environmental Engineering, National Sun Yat-Set UniversityAbstract Rendering plants treat dead livestock and produce grease and bone meal. In a rendering plant, the cooking and drying processes are the main sources of odor emissions. Non-fresh dead livestock reduce the performance of odor control devices, and in Taiwan, t he treatment facilities in a rendering plant mostly are operated in a batch feeding, which causes volatile organic compound (VOC) emissions in the exhausted gas, that always caused complaints from the nearby neighborhood. This study used respectively ozone and hydrogen peroxide to evaluate the removal efficiencies of pentanal, hexanal and toluene those are common VOCs in the rendering exhaustion. Experimental results indicated that ozone could not effectively reduce aldehydes and toluene, and the residual ozone remaining in the exhaust gas is a secondary air pollutant and irritate the human respiratory tracts. Oppositely, hydrogen peroxide effectively removed pentanal as a feasible VOC treatment oxidant by adding into a contact reactor. When the pentanal exhaustion concentration from the rendering process was around 36.23 ppm in the flue with the flow rates from 100 to 250 Nm3 min−1, the reaction rate constant of pentanal for the first-order reaction by aqueous hydrogen peroxide of 1,000 mg L−1 was obtained as 0.536 1 s−1, and then the pentanal reduced to 0.68 to 2 ppm. Based on the simulation using the Gaussian dispersion model, the concentration ranges of pentanal in the exhausted stream resulted in the pentanal emission rate lower than 0.01 g s−1, which no longer causes surrounding residents’ complaints.https://doi.org/10.4209/aaqr.220440RenderingOzoneHydrogen peroxidePentanalVolatile organic compoundsOxidation |
| spellingShingle | Wen-Hsi Cheng Chun-Hung Lin Chung-Shin Yuan Ken-Lin Chang VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide Aerosol and Air Quality Research Rendering Ozone Hydrogen peroxide Pentanal Volatile organic compounds Oxidation |
| title | VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide |
| title_full | VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide |
| title_fullStr | VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide |
| title_full_unstemmed | VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide |
| title_short | VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide |
| title_sort | voc emissions from a rendering plant and evaluation for removal of pentanal by oxidization using hydrogen peroxide |
| topic | Rendering Ozone Hydrogen peroxide Pentanal Volatile organic compounds Oxidation |
| url | https://doi.org/10.4209/aaqr.220440 |
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