Investigation of the Relationship between Gas Production and Sediment Properties in River Environments

In riverine environments under anaerobic conditions, methane and carbon dioxide are produced as a result of biological activity, causing degradation of organic matter. Under aerobic conditions, the bacteria present degrade the organic matter, whereby the concentration of dissolved oxygen may be lowered. Thus, issues experienced in the...

Investigation of the Effect of Water Quality on Formation Damage using Porous Discs

Water injection is widely used in the petroleum industry for the increase of hydrocarbon recovery or disposal of wastewater. Water production and injection are the primary mechanisms in Geothermal Energy. Both include injecting water into a porous formation under matrix injection conditions. While maintaining water injection is vital in these...

Investigation of Gas Generation by Riverine Sediments: Production Dynamics and Effects of Sediment Properties

Due to microbial activities, the anaerobic degradation of organic matter happens in the sediments and leads to considerable gas production. Especially for low flow areas gas production is more easily fostered. To prevent the potential problems caused by gas production from the riverine sediments, this study focuses on magnitude of gas formation...

Assessing the effects of compaction and saturation on diffusion and diffusive fractionation of methane: Towards and improved quantification of methane oxidation in landfill cover soil

A considerable contribution to the greenhouse effect originates from landfills. This contribution originates from the degeneration of waste in the landfill. The gas which is created during the degeneration consists of 40 to 60% methane. One mole of methane has a global warming potential which is 28 times higher than that of carbon dioxide....

Gas flow through methane oxidation systems: A laboratory and numerical study for optimising system design

English: <br/>Landfills have been indicated as a major methane source. Methane oxidation systems are `low technology' systems that can treat these methane emissions. Yet, methane oxidation systems are herein still sub-optimal and leave room for improvement. A numerical model was established to research the effective gas permeability ratio...

A water balance model for landfill De Kragge II: Supporting the development of a sustainable aftercare approach

Landfills are full of contaminated material, which could be harmful for the environment. To reduce the risks of pollutants entering the environment, a watertight base layer and an impermeable cover layer isolate the waste. These layers have to be maintained eternally, which is very costly. To move towards a more sustainable landfill aftercare,...

A conceptual model describing Microbially Influenced Corrosion of sheet piles

Additional master thesis