Searched for: faculty%3A%22Civil+Engineering+and+Geosciences%22
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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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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 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
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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), 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
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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
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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
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Baviskar, S.M. (author), Heimovaara, T.J. (author)
We believe the unsaturated and heterogeneous nature of landfills leads to the emergence of preferential pathways of water and dissolved compounds through the waste body. In this research we explore the origin of preferential flow in a porous media with a deterministic numerical model. In this model water flow is modeled with the Richards’...
conference paper 2015
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Afanasyev, M. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
journal article 2014
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Konstantaki, L.A. (author), Ghose, R. (author), Draganov, D.S. (author), Diaferia, G. (author), Heimovaara, T.J. (author)
Understanding the processes occurring inside a landfill is important for improving the treatment of landfills. Irrigation and recirculation of leachate are widely used in landfill treatments. Increasing the efficiency of such treatments requires a detailed understanding of the flow inside the landfill. The flow depends largely on the...
journal article 2014
document
Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Kleerebezem, R. (author)
conference paper 2014
document
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), Diaferia, G. (author), Heimovaara, T.J. (author)
Poster presentation at the Geosciences Research Meeting, Delft, February 20, 2014
lecture notes 2014
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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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Afanasyev, M. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
Poster.
conference paper 2013
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Konstantaki, L.A. (author), Dragnov, D.S. (author), Heimovaara, T.J. (author), Ghose, R. (author)
A significant problem with landfills is their aftercare period. A landfill is considered to be safe for the environment only after a relatively long period of time. Until it reaches such a condition, it has to be periodically treated. Not only are treatments very expensive, but they could be dangerous as well; for example, when barriers limiting...
journal article 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 2013
document
Afanasyev, M. (author), Van Paassen, L.A. (author), Heimovaara, T.J. (author)
conference paper 2013
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