Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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Konstantaki, L.A. (author), Draganov, D.S. (author), Heimovaara, T.J. (author), Ghose, R. (author)
conference paper 2012
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Afanasyev, M. (author), Huisman, H. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
conference paper 2015
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Afanasyev, M. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
conference paper 2013
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Van Turnhout, A.G. (author), Kleerebezem, R. (author), Heimovaara, T.J. (author)
In this study, we aim to validate the reaction network with an idealized experiment. We want to show that 1) rate controlling parameters are identifiable from the measured data by inverse modeling, and 2) that this network is able to predict the measured emissions in the experiment given the initial conditions. In the experiment, cabbage is used...
conference paper 2015
document
Konstantaki, L.A. (author), Draganov, D.S. (author), Ghose, R. (author), Heimovaara, T.J. (author)
In this study we investigate the application of seismic interferometry (SI) to seismic reflection data recorded over a landfill. Landfills represent strongly heterogeneous subsurfaces making the seismic reflection imaging challenging. We show that SI improves the imaging of high-density areas, which create scattering events in the recorded data....
conference paper 2015
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Van der Meulen, J. (author), Van Tol, A.F. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
The extraction and processing of many mineral ores result in the generation of large volumes of fine-grained residue or tailings. These fine sediments are deposited as a slurry with very high water contents and lose water after deposition due to self-weight consolidation. When the surface is exposed to the atmosphere they dry due to evaporation....
conference paper 2012
document
Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Kleerebezem, R. (author)
In this paper we present an approach to describe organic degradation within immobile water regions of Municipal Solid Waste (MSW) landfills which is best described by the term “gray box” model. We use a simplified set of dominant (bio)chemical and physical reactions and realistic environmental conditions. All equations, relationships and...
conference paper 2013
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Zhou, J. (author), Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Afanasyev, M. (author)
The spatial and temporal distribution of precipitated minerals is one of the key factors governing various processes in the sub-surface environment, including microbially influenced corrosion (MIC) (Huang, 2002), bio-cementation (van Paassen et al., 2010) and sediment diagenesis (Paraska et al., 2014). The mineral precipitation not only affects...
conference paper 2015
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Heimovaara, T.J. (author), Oonk, H. (author), Scharf, H. (author)
conference paper 2015
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Konstantaki, L.A. (author), Ghose, R. (author), Draganov, D.S. (author), Diaferia, G. (author), Heimovaara, T.J. (author)
The ability to image and quantify the heterogeneity in municipal landfills is crucial for improving the landfill treatment methods, for predicting the behaviour of processes that take place inside the landfills and hence, for estimating the after-care period. Our aim is to image the flow paths inside landfills and to quantify the heterogeneity....
conference paper 2014
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Konstantaki, L.A. (author), Ghose, R. (author), Draganov, D.S. (author), Heimovaara, T.J. (author)
Leachate and gas are a product of biochemical reactions occurring inside the landfill. Treatment technologies (e.g., recirculation of leachate) are developed to reduce the production of leachate. Imaging the location of the wet and gas pockets inside the landfill can help improve the treatment technologies. Wet pockets occur inside the landfill...
conference paper 2015
document
Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Kleerebezem, R. (author)
conference paper 2013
document
Konstantaki, L.A. (author), Draganov, D.S. (author), Heimovaara, T.J. (author), Ghose, R. (author)
Understanding how sensitive the seismic method is to errors that can occur during a seismic survey or during the processing of the seismic data is of high importance for any exploration geophysical project. Our aim is to image the subsurface of a landfill, which is typically a heterogeneous system due to the presence of numerous scatterers....
conference paper 2013
document
Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Kleerebezem, R. (author)
conference paper 2012
document
Van Turnhout, A.G. (author), Brandstatter, C. (author), Kleerebezem, R. (author), Heimovaara, T.J. (author)
The aim of our study is to investigate previously mentioned aspects with scenario analyses via a mechanistic biogeochemical reaction network model that contains the emission controlling reactions. In order to find such a network, we apply the gray modeling toolbox developed by van Turnhout et al. (2015) on a measured dataset used in the study of...
conference paper 2015
document
Heimovaara, T.J. (author), Bun, A. (author), Van Turnhout, A.G. (author)
In order to develop novel approaches for reducing the after-care of Municipal Solid Waste (MSW) sanitary landfills methods are required with which we can quantify the emission potential present in waste bodies. Currently full-scale experiments are being prepared at three Dutch landfills based on enhanced infiltration by irrigation and leachate...
conference paper 2015
document
Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Kleerebezem, R. (author)
The main focus of this paper is the assessment of landfill leachate/gas emissions and longterm prediction of these emissions. Due to variation in environmental conditions, like rainfall events, leachate concentrations are very dynamic on a short-time scale. The measured concentrations in the leachate oscillate between maximum and minimum...
conference paper 2012
document
Konstantaki, L.A. (author), Heimovaara, T.J. (author)
conference paper 2012
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Heimovaara, T.J. (author), Bun, A. (author), van Turnhout, A.G. (author), Konstantaki, L.A. (author), Baviskar, S.M. (author)
Modern sanitary landfills are one the most important final storage solutions for safely storing waste in modern society. Many countries around the world have implemented regulations in order to protect the environment from adverse emissions from the landfills. Generally these regulations require the installation of protective barriers which...
conference paper 2012
document
Bun, A. (author), Heimovaara, T.J. (author), Baviskar, S.M. (author), van Turnhout, A.G. (author), Konstantaki, L.A. (author)
Municipal solid waste landfills are a very complex and heterogeneous systems. The waste in a landfill body is a heterogeneous mixture of a wide range of materials containing high levels of organic matter, high amounts of salts and a wide range of different organic and inorganic substances, such as heavy metals and organic solvents. A range of...
conference paper 2012
Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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