Université de Neuchâtel

Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater

Badin, Alice ; Hunkeler, Daniel (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2015.

Chlorinated ethenes are ubiquitous groundwater contaminants posing a threat to one of our main drinking water sources. Despite their spill history dating back to more than 40 years ago, these contaminants are still found in groundwater in numerous industrially developed countries due to their persistence, difficult characterisation in the subsurface and resulting challenging remediation. When...

Université de Neuchâtel

Riverbank filtration within the context of river restoration and climate change

Diem, Samuel ; Hunkeler, Daniel (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2013.

Drinking water derived by riverbank filtration is generally of high quality and is an important source of drinking water in several European countries. In the future however, riverbank-filtration systems will face two major challenges – river restoration and climate change. The goal of this Ph.D. Thesis was to deepen the understanding of physical and biogeochemical processes that occur during...

Université de Neuchâtel

Groundwater contamination from urban line sources : monitoring and evaluation approach with integral pumping tests

Leschik, Sebastian ; Hunkeler, Daniel (Dir.) ; Schirmer, Mario (Codir.) ; Liedl, Rudolf (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2010.

Urban areas can affect groundwater quality by releasing wastewater-borne contaminants including inorganic compounds and micropollutants. Sewer networks and urban streams that receive effluent from wastewater treatment plants, for example, act as wastewater transport pathways, while potentially losing treated or untreated wastewater to groundwater. Collectively, these pathways are known as urban...

Université de Neuchâtel

Micropollutants in urban receiving waters

Musolff, Andreas ; Hunkeler, Daniel (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2009 ; Th. 2139.

Currently half of the world’s population resides in cities. The ongoing urban land consumption has a tremendous impact on the entire water balance of urban areas. Apart from water quantity, the water quality has also strongly deteriorated. In particular, micropollutants from domestic and industrial wastewater are of growing concern. Despite their low concentrations, micropollutants can act as...

Université de Neuchâtel

Spotlight on heterogeneity : measuring and modelling stream-aquifer interactions

Kalbus, Edda ; Zwahlen, François (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2009 ; Th. 2086.

Interactions between groundwater and streams play an important role for the functioning of stream ecosystems. Most nutrient cycling and stream metabolism takes place in the transition zone between aquifers and streams. Since flow patterns are the major controlling factor for the transformation of dissolved compounds in the transition zone, the characterization and quantification of flow is an...

Université de Neuchâtel

Water and contaminant fluxes at the stream-groundwater-interface

Schmidt, Christian ; Zwahlen, François (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2009 ; Th. 2087.

Streams and groundwater are inherently connected. In temperate climates, for instance, groundwater discharge to streams supplies the baseflow component of streamflow. Groundwater sustains streamflow in dry periods and is therefore critical for maintaining aquatic ecosystems and wetlands. Water fluxes between groundwater and streams also mediate the transport of contaminants between these two...