Plenary lectures -- Deep fluids and geothermal fluids -- Thermodynamic and kinetic modeling of water-rock interaction -- Mineral-water interactions : from mineral surfaces to watersheds -- Marine geochemistry, basin hydrogeology and sedimentary geochemistry -- Waste storage, disposal and utilization, CO2 and SO2 sequestration and remediation of contaminated sites -- Stable and radiogenic isotopes, tracers for hydrogeochemical studies -- Organic geochemistry, biogeochemistry and geomicrobiology -- Water-rock interaction processes in groundwater and sedimentary systems -- Groundwater quality -- Karst geochemistry -- Environmental geochemistry -- Gas-soil-water interactions and solute transport in the vadose zone -- Geohazards and water-rock interactions -- Geochemical cycles and global environmental change -- Applied environmental chemistry -- Additional contributions.