Biogeochemistry and isotope geochemistry of a landfill leachate plume

Breukelen, Boris M. van; Röling, Wilfred F. M.; Groen, J.; Griffioen, Jasper; Verseveld, Henk W. van

doi:10.1016/s0169-7722(03)00003-2

Cited by 98 publications

(109 citation statements)

References 45 publications

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“…The groundwater velocity is 4 to 10 m/year toward a nature reserve (51). More site characteristics have been described previously (51).…”

Section: Methodsmentioning

confidence: 84%

“…Anaerobic iron reduction is the major process in the plume, while above and below the plume anaerobic conditions also prevail (51). The groundwater velocity is 4 to 10 m/year toward a nature reserve (51). More site characteristics have been described previously (51).…”

Section: Methodsmentioning

confidence: 88%

“…The lithology of this aquifer consists of a 7-to 9-m-thick layer of fine to coarse-grained unconsolidated clayey sands. Anaerobic iron reduction is the major process in the plume, while above and below the plume anaerobic conditions also prevail (51). The groundwater velocity is 4 to 10 m/year toward a nature reserve (51).…”

Section: Methodsmentioning

confidence: 99%

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Eukaryotic Diversity in an Anaerobic Aquifer Polluted with Landfill Leachate

Brad

Braster

Breukelen

et al. 2008

Appl Environ Microbiol

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Eukaryotes may influence pollutant degradation processes in groundwater ecosystems by activities such as predation on bacteria and recycling of nutrients. Culture-independent community profiling and phylogenetic analysis of 18S rRNA gene fragments, as well as culturing, were employed to obtain insight into the sedimentassociated eukaryotic community composition in an anaerobic sandy aquifer polluted with landfill leachate (Banisveld, The Netherlands). The microeukaryotic community at a depth of 1 to 5 m below the surface along a transect downgradient (21 to 68 m) from the landfill and at a clean reference location was diverse. Fungal sequences dominated most clone libraries. The fungal diversity was high, and most sequences were sequences of yeasts of the Basidiomycota. Sequences of green algae (Chlorophyta) were detected in parts of the aquifer close (<30 m) to the landfill. The bacterium-predating nanoflagellate Heteromita globosa (Cercozoa) was retrieved in enrichments, and its sequences dominated the clone library derived from the polluted aquifer at a depth of 5 m at a location 21 m downgradient from the landfill. The number of culturable eukaryotes ranged from 10 2 to 10 3 cells/g sediment. Culture-independent quantification revealed slightly higher numbers. Groundwater mesofauna was not detected. We concluded that the food chain in this polluted aquifer is short and consists of prokaryotes and fungi as decomposers of organic matter and protists as primary consumers of the prokaryotes.Food webs in aquifers may comprise eukaryotes in addition to bacteria and archaea. Groundwater eukaryotes range from singlecelled heterotrophic nanoflagellates and fungi to amphipod crustaceans, each of which has important roles in the functioning of the groundwater ecosystem (8). The occurrence of fungi in low numbers has been described for a few pristine and polluted aquifers, but to our knowledge the identities and activities of these organisms have hardly been investigated (26,27,42). Protozoans, especially nanoflagellates, selectively graze on the biomass of the bacterial community (35) and recycle nutrients (36).The abundance of protists, such as ciliates and flagellates, generally increases when there is pollution (27, 35). Biodegradation of organic pollutants often results in the development of anaerobic conditions. Under anoxic conditions, protists can survive and affect the abundance and diversity of bacteria (20). Protists can indirectly affect contaminant biodegradation. By feeding on bacteria, protists can reduce degrader populations, negatively influencing the process of biodegradation (21, 49). However, protists can also positively contribute to organic contaminant degradation by recycling limiting nutrients and making them available to pollutant-degrading bacteria (36), stimulating the activity of each bacterium (29, 30), or sustaining bioremediation by maintaining hydraulic conductivity of the aquifer as a result of reduced bacterial clogging (31, 43).Landfill leachate is an important source of groundwater po...

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“…The groundwater velocity is 4 to 10 m/year toward a nature reserve (51). More site characteristics have been described previously (51).…”

Section: Methodsmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 88%

See 1 more Smart Citation

Eukaryotic Diversity in an Anaerobic Aquifer Polluted with Landfill Leachate

Brad

Braster

Breukelen

et al. 2008

Appl Environ Microbiol

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“…CDOC values in a landfill leachate plume, supporting the occurrence of degradation and denitrification potentially being the dominated redox process at the top fringe [27]. It is hypothesized that the combination of δ…”

mentioning

confidence: 90%

Evaluating the Sources and Fate of Nitrate in the Alluvial Aquifers in the Shijiazhuang Rural and Suburban Area, China: Hydrochemical and Multi-Isotopic Approaches

Zhang

Zhou

et al. 2015

Water

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“…A composição da população microbiana também varia ao longo dos diversos ambientes redox encontrados a partir do aterro, e é fundamental para a formação da sequência desses ambientes. Entre os trabalhos que relacionaram esses ambientes e as populações encontradas são destaques os desenvolvidos nos aterros de Grindsted (LUDVI-GSEN et al, 1999), Banisveld (ROLING et al, 2001; VAN BREUKELEN, 2003) e Norman (WEISS e COZZARELLI, 2008). Roling et al (2001), por meio de análises de DNA, reportam a ocorrência de bactérias denitrificadoras (Azoarcus e Actinobacteria) e ferro oxidantes (G. ferruginea) à montante do aterro de Banisveld.…”

Section: Componentes Microbiológicosunclassified

Geoquímica De Águas Subterrâneas Impactadas Por Aterros De Resíduos Sólidos

Alves¹,

Bertolo²

2012

R. Águas Subter.

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Aquifer contamination is one of the main environmental impacts caused by the inadequate disposal of solid wastes. This contamination occurs when the solid waste leachate reaches this environment. Groundwater affected by leachates presents several biogeochemical processes in time and space, which vary according to the characteristics of leachate and local hydrogeology. These processes induce the formation of different redox zones in the subsurface environment which, in turn, determine the behavior of several substances from the leachate itself and others formed by the interaction between groundwater, leachate and the geological medium. Some of these substances may produce risks for both human and ecological receptors. Therefore, the understanding of the behavior of these substances in the subsurface is the key to establish environmental measures for rehabilitation of the waste disposal facilities. In this context, this article presents a review of the literature about: (a) the mechanisms of leachate formation and its composition and (b) biogeochemical environment and composition of leachate-affected groundwater. This subject is of particular importance considering the National Policy on Solid Waste that predicts that all unlined landfills should be investigated and eradicated in Brazil until 2014.Keywords: Solid waste, landfill, biogeochemistry, aquifer pollution.Resumo: Um dos principais impactos ambientais causados por aterros de resíduos sólidos é a contaminação de aquíferos, que ocorre quando os lixiviados dos resíduos sólidos atingem esse meio. A água subterrânea alterada pelos lixiviados passa, ao longo do tempo e espaço, por diversos processos biogeoquímicos que são responsáveis pela formação de diferentes zonas redox no meio ambiente subterrâneo. Essas zonas-redox condicionam o comportamento das diversas substâncias oriundas do próprio lixiviado e outras que resultam da interação entre a água subterrânea, lixiviado e meio geológico. Algumas dessas substâncias podem causar riscos à saúde humana e a receptores ecológicos. Assim, o entendimento do comportamento dessas substâncias em subsuperfície é fundamental para o estabelecimento de medidas de intervenção ambiental que visem a recuperação de áreas com depósitos de resíduos sólidos. Neste contexto este trabalho tem como objetivo apresentar uma revisão de trabalhos existentes sobre: (a) mecanismos de formação e composição do lixiviado; e (b) ambientes biogeoquímicos e composição de águas subterrâneas impactadas por lixiviados. Este tema é pertinente no sentido de que a Política Nacional de Resíduos Sólidos prevê a erradicação de todos os lixões e aterros controlados no Brasil até 2014, bem como a realização investigações visando a recuperação destes locais.Palavras Chaves: Resíduos sólidos; aterros; biogeoquímica; poluição de aquíferos. INTRODUÇÃOA disposição adequada de resíduos sólidos é relativamente recente no Mundo. Segundo Kehew (2001), até a década de 1960 os resíduos sólidos eram dispostos de maneira inadequada, uma vez que raros eram os l...

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Biogeochemistry and isotope geochemistry of a landfill leachate plume

Cited by 98 publications

References 45 publications

Eukaryotic Diversity in an Anaerobic Aquifer Polluted with Landfill Leachate

Eukaryotic Diversity in an Anaerobic Aquifer Polluted with Landfill Leachate

Evaluating the Sources and Fate of Nitrate in the Alluvial Aquifers in the Shijiazhuang Rural and Suburban Area, China: Hydrochemical and Multi-Isotopic Approaches

Geoquímica De Águas Subterrâneas Impactadas Por Aterros De Resíduos Sólidos

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