Improvement of landfill leachate biodegradability with ultrasonic process.

Landfills leachates 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 initiall...

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Autores principales:	Amir Hossein Mahvi, Ali Akbar Roodbari, Ramin Nabizadeh Nodehi, Simin Nasseri, Mohammad Hadil Dehghani, Mahmood Alimohammadi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3a7ade8fb4f7410ab78921cb23af0523
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spelling	oai:doaj.org-article:3a7ade8fb4f7410ab78921cb23af05232021-11-18T07:11:55ZImprovement of landfill leachate biodegradability with ultrasonic process.1932-620310.1371/journal.pone.0027571https://doaj.org/article/3a7ade8fb4f7410ab78921cb23af05232012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22829863/?tool=EBIhttps://doaj.org/toc/1932-6203Landfills leachates 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. The objectives of this study are to investigate the effect of ultrasonic process on biodegradability improvement. After the optimization by factorial design, the ultrasonic were applied in the treatment of raw leachates using a batch wise mode. For this, different scenarios were tested with regard to power intensities of 70 and 110 W, frequencies of 30, 45 and 60 KHz, reaction times of 30, 60, 90 and 120 minutes and pH of 3, 7 and 10. For determining the effects of catalysts on sonication efficiencies, 5 mg/l of TiO(2) and ZnO have been also used. 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.Amir Hossein MahviAli Akbar RoodbariRamin Nabizadeh NodehiSimin NasseriMohammad Hadil DehghaniMahmood AlimohammadiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 7, p e27571 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Amir Hossein Mahvi Ali Akbar Roodbari Ramin Nabizadeh Nodehi Simin Nasseri Mohammad Hadil Dehghani Mahmood Alimohammadi Improvement of landfill leachate biodegradability with ultrasonic process.
description	Landfills leachates 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. The objectives of this study are to investigate the effect of ultrasonic process on biodegradability improvement. After the optimization by factorial design, the ultrasonic were applied in the treatment of raw leachates using a batch wise mode. For this, different scenarios were tested with regard to power intensities of 70 and 110 W, frequencies of 30, 45 and 60 KHz, reaction times of 30, 60, 90 and 120 minutes and pH of 3, 7 and 10. For determining the effects of catalysts on sonication efficiencies, 5 mg/l of TiO(2) and ZnO have been also used. 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.
format	article
author	Amir Hossein Mahvi Ali Akbar Roodbari Ramin Nabizadeh Nodehi Simin Nasseri Mohammad Hadil Dehghani Mahmood Alimohammadi
author_facet	Amir Hossein Mahvi Ali Akbar Roodbari Ramin Nabizadeh Nodehi Simin Nasseri Mohammad Hadil Dehghani Mahmood Alimohammadi
author_sort	Amir Hossein Mahvi
title	Improvement of landfill leachate biodegradability with ultrasonic process.
title_short	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_sort	improvement of landfill leachate biodegradability with ultrasonic process.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/3a7ade8fb4f7410ab78921cb23af0523
work_keys_str_mv	AT amirhosseinmahvi improvementoflandfillleachatebiodegradabilitywithultrasonicprocess AT aliakbarroodbari improvementoflandfillleachatebiodegradabilitywithultrasonicprocess AT raminnabizadehnodehi improvementoflandfillleachatebiodegradabilitywithultrasonicprocess AT siminnasseri improvementoflandfillleachatebiodegradabilitywithultrasonicprocess AT mohammadhadildehghani improvementoflandfillleachatebiodegradabilitywithultrasonicprocess AT mahmoodalimohammadi improvementoflandfillleachatebiodegradabilitywithultrasonicprocess
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Improvement of landfill leachate biodegradability with ultrasonic process.

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