Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream
Introduction: Human and environment exposed to harmful factors, as the result of industrial pollutants. Volatile organic compounds (VOCs) play important role in photochemical reactions in troposphere layer of atmosphere and results in production of ozone and photochemical oxidants. .Material and Me...
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| Format: | Article |
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Tehran University of Medical Sciences
2013-08-01
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| Series: | بهداشت و ایمنی کار |
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| Online Access: | http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-64&slc_lang=en&sid=1 |
| _version_ | 1818723827820003328 |
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| author | F. Golbabaei A. Karimi M. Neghab M. R. Pourmand R. Bakhtiari K. Mohammad |
| author_facet | F. Golbabaei A. Karimi M. Neghab M. R. Pourmand R. Bakhtiari K. Mohammad |
| author_sort | F. Golbabaei |
| collection | DOAJ |
| description | Introduction: Human and environment exposed to harmful factors, as the result of industrial pollutants. Volatile organic compounds (VOCs) play important role in photochemical reactions in troposphere layer of atmosphere and results in production of ozone and photochemical oxidants.
.Material and Method: In this study, a miniature stirred tank bioreactor was designed for treatment of waste gas containing xylene. In the next step, the bioreactor incubated with microbial consortiums with ratio of 1 to 3. The performance of bioreactor in treatment of xylene vapors in presence of 10% silicone oil, as an organic phase was assessed in concentrations ranging from 551 mg/m3 to 3330 mg/m3 for 432 hours.
.Result: The results of xylene biodegradation showed that removal efficiency up to the concentrations of 2756 mg/m3 was 82 percent. Moreover, adding 10% silicone oil increased removal efficiency of BTX by 85.7% in comparison with context without organic phase. The microbiological experiments on the bioreactor media showed that three spices of Pseudomonas putida, Chryseobacterium and Ralstonia pickettii were found, in the presence of xylene. .
Conclusion: Overall, the results of the present research revealed that application of two phase stirred tank bioreactors (TPPBs) for xylene from contaminated treatment of streams was successful. |
| first_indexed | 2024-12-17T21:16:43Z |
| format | Article |
| id | doaj.art-e208612c860a42e9830db6a942cbe3f8 |
| institution | Directory Open Access Journal |
| issn | 2251-807X 2383-2088 |
| language | fas |
| last_indexed | 2024-12-17T21:16:43Z |
| publishDate | 2013-08-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | بهداشت و ایمنی کار |
| spelling | doaj.art-e208612c860a42e9830db6a942cbe3f82022-12-21T21:32:20ZfasTehran University of Medical Sciencesبهداشت و ایمنی کار2251-807X2383-20882013-08-01325966Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstreamF. Golbabaei0A. Karimi1M. Neghab2M. R. Pourmand3R. Bakhtiari4K. Mohammad5 ept. of Occupational Health,School of Public Health,Shiraz University of Medical Sciences Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences Department of Occupational Health Engineering, School of Public Health, Shiraz University of Medical Sciences epartment of Microbiology, Tehran University of Medical Sciences, Tehran, Iran Department of Microbiology, Tehran University of Medical Sciences, Tehran, Iran Department of Epidemiology, School of Public Health, Tehran University of Medical Sciences Introduction: Human and environment exposed to harmful factors, as the result of industrial pollutants. Volatile organic compounds (VOCs) play important role in photochemical reactions in troposphere layer of atmosphere and results in production of ozone and photochemical oxidants. .Material and Method: In this study, a miniature stirred tank bioreactor was designed for treatment of waste gas containing xylene. In the next step, the bioreactor incubated with microbial consortiums with ratio of 1 to 3. The performance of bioreactor in treatment of xylene vapors in presence of 10% silicone oil, as an organic phase was assessed in concentrations ranging from 551 mg/m3 to 3330 mg/m3 for 432 hours. .Result: The results of xylene biodegradation showed that removal efficiency up to the concentrations of 2756 mg/m3 was 82 percent. Moreover, adding 10% silicone oil increased removal efficiency of BTX by 85.7% in comparison with context without organic phase. The microbiological experiments on the bioreactor media showed that three spices of Pseudomonas putida, Chryseobacterium and Ralstonia pickettii were found, in the presence of xylene. . Conclusion: Overall, the results of the present research revealed that application of two phase stirred tank bioreactors (TPPBs) for xylene from contaminated treatment of streams was successful.http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-64&slc_lang=en&sid=1Stirred tank bioreactor Xylene biodegradation Silicone oil Organic phase |
| spellingShingle | F. Golbabaei A. Karimi M. Neghab M. R. Pourmand R. Bakhtiari K. Mohammad Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream بهداشت و ایمنی کار Stirred tank bioreactor Xylene biodegradation Silicone oil Organic phase |
| title | Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| title_full | Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| title_fullStr | Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| title_full_unstemmed | Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| title_short | Design, construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| title_sort | design construction and optimization of two phase stirred tank bioreactor for elimination of xylene from airstream |
| topic | Stirred tank bioreactor Xylene biodegradation Silicone oil Organic phase |
| url | http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-64&slc_lang=en&sid=1 |
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