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Showing 1 to 20 of 42 for “"Lysimeter"”.
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Suction Cup Lysimeter Method for Extracting Pine Bark Substrate Solution
… to determine the effectiveness of suction cup lysimeters (SCL) in extracting substrate solution from pine bark substrates. Lysimeter types tested were 4.8-cm diameter with a ½ or 1-bar air-entry value (AEV) and 2.2-cm diameter also with a ½ or 1-bar AEV. Sufficient volume could be obtained when …
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Predictive Modeling of Organic Pollutant Leaching and Transport Behavior at the Lysimeter and Field Scales
… for laboratory scale data, was applied to lysimeter scale data from two research centres, FZJ (Jülich) and GSF (München) for long term predictions. Results from pure forward model runs show a fairly good correlation with the measured data. Finally, the derived source term functions in …
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Nitrogen Movement and Transformations in Soils as Evaluated by a Lysimeter Study Utilizing Isotopic Nitrogen and a Field Study
Made available in DSpace on 2014-12-04T20:16:59Z (GMT). No. of bitstreams: 1 5900555.pdf: 4041353 bytes, checksum: a4cb58dff274bd55c44f70e54d719a9a (MD5) Previous issue date: 1958
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The effect of water storages on temporal gravity measurements and the benefits for hydrology
… a suction-controlled, weighable, monolith-filled lysimeter, allowing an all time first comparison of a lysimeter and a gravimeter. Lysimeter data were used to estimate WSC at the field scale in combination with complementary observations and a hydrological 1D model. Total local WSC were derived, …
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Performance Enhancement of Aerobic Landfill Bioreactors
… consisted of a series of batch and flow through lysimeter experiments as well as mathematical modeling. The best aeration technique was identified by conducting lysimeter experiments and mathematical modeling. The study revealed that a waste cell aerated with a vertical piping system would yield …
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Investigations of water and tracer movement in covered and uncovered unsaturated waste rock
… surface. Data from a deuterium tracer test, lysimeter outflow, and from TDR probes were used to derive estimates of the maximum and an average pore water velocity through the uncovered and the covered waste rock. An average pore water velocity through the matrix materials of the uncovered …
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Development of techniques for the assessment of denitrification in New Zealand soils
… of nitrogen evolution under field conditions a lysimeter was specially designed and constructed. The purpose of the lysimeter was to achieve and maintain a low nitrogen background within a soil core. By flushing the soil core with nitrogen-free gas, nitrogen concentrations between 2000 and 5000 …
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Sorption and leaching of glyphosate on partly sealed urban areas
… (2) ein Freilandversuch mit teilversiegelten Lysimetern, (3) Säulenversuche mit Material des Lysimeters und Fugenmaterial eines Gehwegs, (4) ökotoxikologische Versuche mit dem Wurm Lumbriculus variegatus. Die Untersuchungen des Fugenmaterials zeigten, dass die obere 0-1 cm Schicht aufgrund von …
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Predictions of leachate generation from minerals processing waste deposits
… occur in the deposit. These experiments, termed lysimeter experiments, are time consuming in that they typically last for at least a few months and can last for up to three years. Lysimeter experiments are also costly to conduct. Because of restrictions such as these, relatively few deposits have …
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Die Wirksamkeit der Kapillarsperre als Deponieoberflächenabdichtung
… experimental fields with integrated large scale lysimeters and slopes of 10 % and 26 % have been constructed on site at the landfill. The lysimeter data of three subsequent years were used for the analysis. After the growth of a closed cover of vegetation the surface runoff was negligible. Only …
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Modeling and monitoring pathogen transport through vegetated filter strips
… manure. The study included a field-based lysimeter equipped with multi-sensor moisture probes to monitor real-time water content through the soil profile, and with other proper instrumentation to monitor and quantify the spatial and temporal release rates of pathogenic bacteria. Another …
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Environmental and agronomic aspects of municipal solid waste heavy fraction used for turfgrass production
… of K, Ca, S, Mg, and Mn in leachate collected in lysimeter studies. Improved fertility resulted in greater aesthetic quality, clipping yields, and tissue N content for tall fescue (<i>Festuca arundinacea</i> Schreb.). Lysimeter studies indicated that the greatest environmental concern associated …
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Charakterisierung von Renaturierungsprozessen in Bruchwäldern: ökologische Untersuchungen in zwei Landschaftsräumen Nordwestdeutschlands
… bei Wiederherstellung anaerober Bedingungen. Im Lysimeter liefen in Torfsäulen ähnlicher Grundcharakteristika deutlich divergierende Prozesse bei Vernässungsversuchen ab. Aus den Untersuchungen ergibt sich, daß die Wirksamkeit von Wiedervernässungsma&ßnahmen für jeden einzelnen entwässerten …
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Predictions of leachate generation from minerals processing waste deposits
… occur in the deposit. These experiments, termed lysimeter experiments, are time consuming in that they typically last for at least a few months and can last for up to three years. Lysimeter experiments are also costly to conduct. Because of restrictions such as these, relatively few deposits have …
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Response of tall fescue to saline water as influenced by leaching fractions and irrigation uniformity distributions
… grown in 18 plots, each with a centrally located lysimeter that enabled estimates of evapotranspiration and irrigation requirements. Imposed treatments included setting LFs at 0.05, 0.15, or 0.25 and manipulating plot irrigation systems such that Christiansen Uniformity Coefficients (CUC) were set …
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Untersuchungen zur Isolierung und Identifizierung von Stoffwechselprodukten des Abbaus von Koniferenrinde durch Pilze und Prüfung der Wirkung der Metabolite auf die Mobilisierung von Schwermetallen aus kontaminierten Böden
… angewendet wurde. In Modellexperimenten wurden Lysimeter, gefüllt mit einer Mischung aus Rindenmulch und kontaminiertem Boden, mit Wasser über einen Zeitraum von mehreren Monaten beregnet. Parallel dazu wurden auch Kontrollexperimente (reiner Sand mit Rindenmulch) in gleicher Art und Weise …
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Effects of Reduced Early Post-Sprigging Nitrogen Application on Bermudagrass Sprig Establishment
… 4.9 kg N ha-1 wk-1 to 48.8 kg N ha-1 wk-1. A lysimeter study quantified leaching nitrate loss using the same weekly nitrogen rates, however, only six treatments existed. All plots were rated at weeks 4, 8 and 10 for cover, color, and density. A greenhouse study was implemented to evaluate …
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Impacts of biota on bioretention cell function during establishment in the Midwest
… of biota on function of bioretention cells, a lysimeter study was conducted at Kansas State University to determine how earthworms and native Kansas grasses impact runoff treatment and hydraulic function of a bioretention cell. This study also employed the Comprehensive Bioretention Cell (BRC) …
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Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent
… calcareous soils in greenhouse and field lysimeters, and in soil columns. The leachate from one field lysimeter contained increased fecal coliform counts than the effluent. Leachate coliform counts were decreased or not significantly changed in two field lysimeters. Electrical conductivity …
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An evaluation of unsaturated flow models in an arid climate
… data collected from an instrumented weighing lysimeter site near the RWMS were used for building the models with actual initial and boundary conditions representative of the site. Physical processes affecting the site and model performance were explored. Model performance was based on a …
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