Journal ArticleDOI
Redox zones of a landfill leachate pollution plume (Vejen, Denmark)
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TLDR
In this article, a sequence of redoxe zones is identified from groundwater chemical analysis from an old municipal landfill allowing leachate, rich in dissolved organic carbon, to enter a shallow sandy aerobic aquifer, and the redox zone sequence is believed to be key in controlling the fate of reactive pollutants leached from the landfill.About:
This article is published in Journal of Contaminant Hydrology.The article was published on 1992-09-01. It has received 212 citations till now. The article focuses on the topics: Leachate & Groundwater.read more
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Journal ArticleDOI
Biogeochemistry of landfill leachate plumes
Thomas Højlund Christensen,Peter Kjeldsen,Poul Løgstrup Bjerg,Dorthe Lærke Jensen,J. Christensen,Anders Baun,Hans-Jørgen Albrechtsen,Gorm Heron +7 more
TL;DR: The literature has been critically reviewed in order to assess the attenuation processes governing contaminants in leachate affected aquifers as discussed by the authors, focusing on dissolved organic matter, xenobiotic organic compounds, inorganic macrocomponents as anions and cations, and heavy metals.
Journal ArticleDOI
Characterization of redox conditions in groundwater contaminant plumes
Thomas Højlund Christensen,Poul Løgstrup Bjerg,Steven A. Banwart,Rasmus Jakobsen,Gorm Heron,Hans-Jørgen Albrechtsen +5 more
TL;DR: A review of the principles behind the different approaches, summarizes methods used and evaluates the approaches based on the experience from the reported applications can be found in this paper, with a few exceptions, direct electrochemical measurement and rigorous interpretation of redox potentials dubious, if not erroneous.
Journal ArticleDOI
Attenuation of landfill leachate pollutants in aquifers
Thomas Højlund Christensen,Peter Kjeldsen,Hans-Jørgen Albrechtsen,Gorm Heron,Per Henning Nielsen,Poul Løgstrup Bjerg,Peter E. Holm +6 more
TL;DR: In this paper, the physical and chemical frameworks for the attenuation processes are discussed in terms of dilution/dispersion and redox zones in the plume, respectively, and a separate section focuses on the occurrence of bacteria in plumes, the fate of pathogens, and microbial mediation of redox processes.
Journal ArticleDOI
Kinetics of reductive bulk dissolution of lepidocrocite, ferrihydrite, and goethite
Ole Larsen,Dieke Postma +1 more
TL;DR: In this article, the authors investigated the variation in Fe-oxide reactivity by studying the kinetics of bulk reductive dissolution of a suite of synthetic Fe-oxides in 10 mM ascorbic acid at pH 3.
References
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Journal ArticleDOI
Ground water redox reactions: an analysis of equilibrium state applied to eh measurements and geochemical modeling.
TL;DR: Computer modeling of 611 high-quality analyses of normal ground waters from diverse geographic areas reveals that aqueous oxidation-reduction reactions are generally not at equilibrium.
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Oxidation–reduction sequences in ground water flow systems
TL;DR: In this paper, the authors observed a decline in the measured (platinum electrode) potential, EH, of ground water as it migrates from upland recharge areas to lowland dischar...
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Quality and Quantity of Sanitary Landfill Leachate
TL;DR: In this paper, the results of leachate quantity and quality measurement at 20 landfills in the northern part of West Germany over an average period of three years were presented, and the results showed that leachates had high COD and BOD5.
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Fate of organic contaminants in the redox zones of a landfill leachate pollution plume (Vejen, Denmark)
TL;DR: In this article, the first 20 m of leachate pollution plume are methanogenic/sulfidogenic, judged on the chemistry of the groundwater, followed by a significant ferrogenic zone exhibiting a substantial capacity to degrade the organic compounds.
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Organic indicators of groundwater pollution by a sanitary landfill
TL;DR: In this paper, the organic composition of leachate from the Barcelona sanitary landfill is described, and an analytical method is proposed based on the GC-ECD fingerprinting of groundwater acidic extracts after derivatization with PFB bromide.