Improvement of Landfill Leachate Biodegradability with Ultrasonic Process
Leachate from mature landfills is typically characterized by high ammonium (NH4+) content, low biodegradability (low BOD5/COD ratio) and high fraction of refractory and large organic molecules such as humic and fulvic acids. Mature leachate effluents are known to contain recalcitrant and/or non-biod...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | E-Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2012/820971 |
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| author | Mahvi Amirhossein Roodbari Aliakbar Nabizadeh Nodehi Ramin Naseri Simin Dehghani Mohammadhadii Alimohammadi Mahmood |
| author_facet | Mahvi Amirhossein Roodbari Aliakbar Nabizadeh Nodehi Ramin Naseri Simin Dehghani Mohammadhadii Alimohammadi Mahmood |
| author_sort | Mahvi Amirhossein |
| collection | DOAJ |
| description | Leachate from mature landfills is typically characterized by high ammonium (NH4+) content, low biodegradability (low BOD5/COD ratio) and high fraction of refractory and large organic molecules such as humic and fulvic acids. Mature leachate effluents are known to contain recalcitrant and/or non-biodegradable organic substances and biological processes are not efficient in these cases. A promising alternative to complete oxidation of biorecalcitrant leachate is the use of ultrasonic process as pre-treatment to convert initially biorecalcitrant compounds to more readily biodegradable intermediates, followed by biological oxidation of these intermediates to biomass and water. The objectives of this study are to investigate the effect of son catalysts process on biodegradability improvement. Results showed that when applied as relatively brief pre-treatment systems, the sonocatalysis processes induce several modifications of the matrix, which results in significant enhancement of its biodegradability. For this reason, the integrated chemical–biological systems proposed here represent a suitable solution for the treatment of landfill leachate samples with an efficient remediation of the relevant parameters (COD, TOC). |
| format | Article |
| id | doaj-art-59cc9a9cf1964e01840b0b92b73004d0 |
| institution | Kabale University |
| issn | 0973-4945 2090-9810 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | E-Journal of Chemistry |
| spelling | doaj-art-59cc9a9cf1964e01840b0b92b73004d02025-02-03T06:07:57ZengWileyE-Journal of Chemistry0973-49452090-98102012-01-019276677110.1155/2012/820971Improvement of Landfill Leachate Biodegradability with Ultrasonic ProcessMahvi Amirhossein0Roodbari Aliakbar1Nabizadeh Nodehi Ramin2Naseri Simin3Dehghani Mohammadhadii4Alimohammadi Mahmood5National Institute of Health Research Tehran University of Medical Sciences, Tehran, IranSchool of Public Health and Center for Environmental Research Tehran University of Medical Sciences, Tehran, IranNational Institute of Health Research Tehran University of Medical Sciences, Tehran, IranNational Institute of Health Research Tehran University of Medical Sciences, Tehran, IranNational Institute of Health Research Tehran University of Medical Sciences, Tehran, IranNational Institute of Health Research Tehran University of Medical Sciences, Tehran, IranLeachate from mature landfills is typically characterized by high ammonium (NH4+) content, low biodegradability (low BOD5/COD ratio) and high fraction of refractory and large organic molecules such as humic and fulvic acids. Mature leachate effluents are known to contain recalcitrant and/or non-biodegradable organic substances and biological processes are not efficient in these cases. A promising alternative to complete oxidation of biorecalcitrant leachate is the use of ultrasonic process as pre-treatment to convert initially biorecalcitrant compounds to more readily biodegradable intermediates, followed by biological oxidation of these intermediates to biomass and water. The objectives of this study are to investigate the effect of son catalysts process on biodegradability improvement. Results showed that when applied as relatively brief pre-treatment systems, the sonocatalysis processes induce several modifications of the matrix, which results in significant enhancement of its biodegradability. For this reason, the integrated chemical–biological systems proposed here represent a suitable solution for the treatment of landfill leachate samples with an efficient remediation of the relevant parameters (COD, TOC).http://dx.doi.org/10.1155/2012/820971 |
| spellingShingle | Mahvi Amirhossein Roodbari Aliakbar Nabizadeh Nodehi Ramin Naseri Simin Dehghani Mohammadhadii Alimohammadi Mahmood Improvement of Landfill Leachate Biodegradability with Ultrasonic Process E-Journal of Chemistry |
| title | Improvement of Landfill Leachate Biodegradability with Ultrasonic Process |
| title_full | Improvement of Landfill Leachate Biodegradability with Ultrasonic Process |
| title_fullStr | Improvement of Landfill Leachate Biodegradability with Ultrasonic Process |
| title_full_unstemmed | Improvement of Landfill Leachate Biodegradability with Ultrasonic Process |
| title_short | Improvement of Landfill Leachate Biodegradability with Ultrasonic Process |
| title_sort | improvement of landfill leachate biodegradability with ultrasonic process |
| url | http://dx.doi.org/10.1155/2012/820971 |
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