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Characteristics and Biological Treatment of Leachates from a Domestic Landfill | OMICS International | Abstract
ISSN: 2157-7587

Hydrology: Current Research
Open Access

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Special Issue Article

Characteristics and Biological Treatment of Leachates from a Domestic Landfill

Saidi Neila1*, Khiari Lotfi2, Kouki Soulwene 1, Ben Yahmed Amira 1, Ben Rejeb Asma1, Fumio Murano3 and Kinnedy Ann4
1Centre de Recherches et des Technologies des Eaux. Laboratoire de Traitement et Recyclage des Eaux Usées, (Annexe El Menzah 1), University of Carthage, P.O. Box 273, 8020 Soliman, Tunis, Tunisia
2Dep. of Soil Science and Agri-Food Engineering, Paul Comtois Bldg., Université Laval, Quebec City, QC, Canada G1V 0A6
3Japanese International Cooperation Agency (Tunisian Office), Tunisia JICA
4Washington State University 231 Johnson Hall Pullman
Corresponding Author : Saidi Neila
Centre de Recherches et des
Technologies des Eaux. Laboratoire de Traitement
et Recyclage des Eaux Usées, (Annexe El Menzah 1)
University of Carthage, P.O. Box 273, 8020 Soliman, Tunis, Tunisia
Tel: 21671788436, 96 348 365
Fax: 21671410740
E-mail: [email protected]
Received November 03, 2011; Accepted December 01, 2011; Published December 05, 2011
Citation: Saidi N, Khiari L, Kouki S, Ben Yahmed A, Ben Rejeb A, et al. (2011) Characteristics and Biological Treatment of Leachates from a Domestic Landfill . Hydrol Current Res S3:001. doi: 10.4172/2157-7587.S3-001
Copyright: © 2011 Neila S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Waste material from urban areas is a major environmental concern and landfill application is a frequent method for waste disposal. The leachate from landfills can, however, negatively affect the surrounding environment. A bioreactor cascade containing submerged biofilms was used to treat newly formed (< 1 year old) leachates of the Jbel Chekir landfill located southwest of Tunis, Tunisia. A preliminary analysis indicated a highly biodegradable portion of the leachate substances (BOD5/ COD = 0.4). The treatment system and performance was investigated at different organic loading rates. Results obtained during this study indicated a significant reduction in organic matter between 60 to 90% of Total Organic Carbon. The main bacterial genera responsible for removal of organic carbon in the leachate consisted of the genera Bacillus, Actinomyces, Pseudomonas and Burkholderia. The bacterial isolates inoculated into raw leachates further reduced TOC concentrations. TOC was reduced by Pseudomonas isolates by 70%. Actinomyces and Bacillus isolates reduced TOC by 69% and Burkholderia isolates resulted in the greatest TOC reduction of 77%. Consortia of the bacterial isolates reached TOC yield of about 84%.

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