Understanding nitrogen transformation using the ratio of nitrogen to argon in landfills under in-situ stabilisation

In the Netherlands, three full-scale pilots have been in operation for approximately five years to understand the effects of leachate recirculation or aeration on waste stabilisation. This study employs the ratio of N2 to Ar in the landfill gas in comparison to the ratio in atmospheric air to derive the share of N2 that originates from...

Walking-induced vibration control in multifamily timber buildings: Analysis of floor configurations and support conditions using classical vibration theory

Practical combinations of floor configurations and support conditions are studied for the development of a lightweight timber building method that is suitable for multi-family residential buildings. Classical vibration theory forms the base for a methodology that is developed to assess transmittance of vibrations to adjoining floor fields....

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...

Acid phosphatase behaviour at an electrified soft junction and its interfacial co-deposition with silica

The behaviour of acid phosphatase at an electrified liquid–liquid interface was studied in this work. It was found that only the protonated form of the protein can undergo interfacial adsorption which is affected by the pH of the aqueous phase. With ion transfer voltammetry we could detect acid phosphatase in concentrations as low as 0.1 μM....

Proteomics as a new tool to study fingermark ageing in forensics

Fingermarks are trace evidence of great forensic importance, and their omnipresence makes them pivotal in crime investigation. Police and law enforcement authorities have exploited fingermarks primarily for personal identification, but crucial knowledge on when fingermarks were deposited is often lacking, thereby hindering crime...

Multi-phase modelling of in situ aeration of sanitary landfills

Synthesis of Strontium and Barium Cerate and Their Reaction with Carbon-Dioxide

Synthesis of strontium cerium oxide (SrCeO3), barium cerium oxide (BaCeO3), strontium zirconium oxide (SrZrO3), and barium zirconium oxide (BaZrO3) and their reaction with carbon dioxide