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Correlation between physicochemical and ecotoxicological approaches to estimate landfill leachates toxicity

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Title: Correlation between physicochemical and ecotoxicological approaches to estimate landfill leachates toxicity
Authors: Pablos, M.V.1 pablos@inia.es, Martini, F.1, Fernández, C.1, Babín, M.M.1, Herraez, I.2, Miranda, J.2, Martínez, J.2, Carbonell, G.1, San-Segundo, L.1, García-Hortigüela, P.1, Tarazona, J.V.1
Source: Waste Management. Aug2011, Vol. 31 Issue 8, p1841-1847. 7p.
Subject Terms: *Pollution, *Leachate, *Landfills, *Solid waste, *Industrial wastes, *Groundwater, Daphnia magna, Xenopus laevis
Abstract: Abstract: Leachates from municipal solid waste (MSW) landfills may contain a huge diversity of contaminants; these wastewaters should be considered as potentially hazardous complex mixtures, representing a potential environmental risk for surface and groundwater. Current MSW landfill wastes regulatory approaches deem exclusively on the physicochemical characterization and does not contemplate the ecotoxicological assessment of landfill leachates. However, the presence of highly toxic substances in consumer products requires reconsideration on the need of more specific ecotoxicological assessments. The main aim of this study was to evaluate the toxicity of different MSW landfill leachates using a battery of toxicity tests including acute toxicity tests with Daphnia magna and the anuran Xenopus laevis and the in vitro toxicity test with the fish cell line RTG-2. The additional objective was to study the possible correlation between physicochemical properties and the toxicity results obtained for untreated landfill leachates. The results showed that the proposed test battery was effective for the ecotoxicological characterization of MSW landfill leachates. A moderate to strong correlation between the measured physicochemical parameters and the calculated toxicity units was detected for all toxicity assays. Correlation factors of 0.85, 0.86 and 0.55 for Daphnia, Xenopus and RTG-2 tests, respectively, were found. The discriminant analysis showed that certain physicochemical parameters could be used for an initial categorization of the potential aquatic acute toxicity of leachates; this finding may facilitate leachates management as the physicochemical characterization is currently the most common or even only monitoring method employed in a large majority of landfills. Ammonia, alkalinity and chemical oxygen demand (COD), together with chloride, allowed a proper categorization of leachates toxicity for up to 75% of tested samples, with a small percentage of false negatives. [Copyright &y& Elsevier]
Copyright of Waste Management is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Correlation between physicochemical and ecotoxicological approaches to estimate landfill leachates toxicity
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  Data: <searchLink fieldCode="AR" term="%22Pablos%2C+M%2EV%2E%22">Pablos, M.V.</searchLink><relatesTo>1</relatesTo><i> pablos@inia.es</i><br /><searchLink fieldCode="AR" term="%22Martini%2C+F%2E%22">Martini, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Fernández%2C+C%2E%22">Fernández, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Babín%2C+M%2EM%2E%22">Babín, M.M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Herraez%2C+I%2E%22">Herraez, I.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Miranda%2C+J%2E%22">Miranda, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Martínez%2C+J%2E%22">Martínez, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Carbonell%2C+G%2E%22">Carbonell, G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22San-Segundo%2C+L%2E%22">San-Segundo, L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22García-Hortigüela%2C+P%2E%22">García-Hortigüela, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tarazona%2C+J%2EV%2E%22">Tarazona, J.V.</searchLink><relatesTo>1</relatesTo>
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  Data: Waste Management. Aug2011, Vol. 31 Issue 8, p1841-1847. 7p.
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  Data: *<searchLink fieldCode="DE" term="%22Pollution%22">Pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Leachate%22">Leachate</searchLink><br />*<searchLink fieldCode="DE" term="%22Landfills%22">Landfills</searchLink><br />*<searchLink fieldCode="DE" term="%22Solid+waste%22">Solid waste</searchLink><br />*<searchLink fieldCode="DE" term="%22Industrial+wastes%22">Industrial wastes</searchLink><br />*<searchLink fieldCode="DE" term="%22Groundwater%22">Groundwater</searchLink><br /><searchLink fieldCode="DE" term="%22Daphnia+magna%22">Daphnia magna</searchLink><br /><searchLink fieldCode="DE" term="%22Xenopus+laevis%22">Xenopus laevis</searchLink>
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  Data: Abstract: Leachates from municipal solid waste (MSW) landfills may contain a huge diversity of contaminants; these wastewaters should be considered as potentially hazardous complex mixtures, representing a potential environmental risk for surface and groundwater. Current MSW landfill wastes regulatory approaches deem exclusively on the physicochemical characterization and does not contemplate the ecotoxicological assessment of landfill leachates. However, the presence of highly toxic substances in consumer products requires reconsideration on the need of more specific ecotoxicological assessments. The main aim of this study was to evaluate the toxicity of different MSW landfill leachates using a battery of toxicity tests including acute toxicity tests with Daphnia magna and the anuran Xenopus laevis and the in vitro toxicity test with the fish cell line RTG-2. The additional objective was to study the possible correlation between physicochemical properties and the toxicity results obtained for untreated landfill leachates. The results showed that the proposed test battery was effective for the ecotoxicological characterization of MSW landfill leachates. A moderate to strong correlation between the measured physicochemical parameters and the calculated toxicity units was detected for all toxicity assays. Correlation factors of 0.85, 0.86 and 0.55 for Daphnia, Xenopus and RTG-2 tests, respectively, were found. The discriminant analysis showed that certain physicochemical parameters could be used for an initial categorization of the potential aquatic acute toxicity of leachates; this finding may facilitate leachates management as the physicochemical characterization is currently the most common or even only monitoring method employed in a large majority of landfills. Ammonia, alkalinity and chemical oxygen demand (COD), together with chloride, allowed a proper categorization of leachates toxicity for up to 75% of tested samples, with a small percentage of false negatives. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Waste Management is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.wasman.2011.03.022
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Pollution
        Type: general
      – SubjectFull: Leachate
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      – SubjectFull: Landfills
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