A multi-phase biogeochemical model for mitigating earthquake-induced liquefaction via microbially induced desaturation and calcium carbonate precipitation

A next-generation biogeochemical model was developed to explore the impact of the native water source on microbially induced desaturation and precipitation (MIDP) via denitrification. MIDP is a non-disruptive, nature-based ground improvement technique that offers the promise of cost-effective mitigation of earthquake-induced soil liquefaction...

Optimizing landfill aeration strategy with a 3-D multiphase model

In order to reduce the environmental and financial burden for future generations, approaches are needed to shorten aftercare of landfills. Aeration of the waste-body is a promising approach, however, the poor understanding of transport of gas and water through a waste-body makes it difficult to design an effective aeration strategy. The aim of...

Theoretical analysis of municipal solid waste treatment by leachate recirculation under anaerobic and aerobic conditions

Long-term emissions of Municipal Solid Waste (MSW) landfills are a burden for future generations because of the required long-term aftercare. To shorten aftercare, treatment methods have to be developed that reduce long-term emissions. A treatment method that reduces emissions at a lysimeter scale is re-circulation of leachate. However, its...

Characterizing Dominant Processes in Landfills to Quantify the Emission Potential

Our ever-growing amount of solid waste puts a burden on future generations and the environment due to emissions of contaminants such as CO2, CH4, Cl- and heavy-metals for hundreds of years. It is therefore essential that landfill after-care methods are developed that reduce the emission potential of landfills to acceptable levels within the time...

A toolbox to find the best mechanistic model to predict the behavior of environmental systems

Reliable prediction of the long-term behavior of environmental systems such as Municipal Solid Waste (MSW) landfills is challenging. While many driving forces influence this behavior, characterization of them is limited by measurement techniques. Therefore, a model structure for reliable prediction needs to optimally combine all measured...

Is it possible to quantify emission potential from high resolution monitoring of leachate dynamics?

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...

Integrated modeling and up-scaling of landfill processes and heterogeneity using stochastic approach

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...