Browsing by Subject "Geochemistry"
Now showing items 1-11 of 11
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Absence of short-term temperature adaptation in core and intact branched tetraether membrane lipid distribution in a mid-latitude highland peat
(2011)Branched glycerol dialkyl glycerol tetraethers (GDGTs) are bacterial membrane lipids which are abundant in soils and peat and used as a proxy for temperature and pH. Several types of GDGTs exist, whose distribution can be ... -
Bioremediation of a Light NAPL (Toluene) Contaminated Soil under Different Environmental Conditions
(2010)LNAPLs are a common contaminant in the environment. When a LNAPL infiltrates the soil, it leaves behind a trail of immobile ganglia in the pore spaces. When the groundwater table is reached, the LNAPL forms a film on top ... -
Carbon cycling and its effect on oxygen concentrations and pH in a seasonally anoxic coastal marine system
(2012)Coastal systems are increasingly experiencing low-oxygen conditions, due to enhanced primary production from terrestrial nutrient input and increasing thermal stratification as a result of global warming. The second effect ... -
Characterization of the spatial distribution of iron- and manganese oxides in the Sterksel Formation at the Maalbeek quarry, The Netherlands
(2012)Iron and manganese oxides are common components in subsurface environments. They influence the groundwater flow, sediment chemistry and contaminant transport. The oxides can form coatings on the surface of sand particles ... -
Electrokinetically induced removal of heavy metals from an aged, contaminated sludge – a laboratory experiment
(2011)Soil pollution is a universal environmental issue and the clean-up of such contaminated soils can be a costly and time consuming task. Traditional methods such as pump and treat or soil flushing may not provide an effective ... -
Metallurgical processing of zinc bearing residues
(2010)In this study metallurgical processing of two different kinds of zinc-bearing residues have been performed; Zinc A and Zinc B. These residues have been stored for over 15 years in Rotterdam Harbor. From a pre-feasibility ... -
Migration of heavy metals in soils by evaporation
(2011)The heavy metals behave differently in the soil depending on soil type, composition and also on the environment surrounding the soil. In the arid and semiarid environments, evaporation has predominance on precipitation. ... -
Multicomponent Transport of Contaminants Released into the Environment following the Application of Phosphogypsum.
(2011)The fate of radioactive contaminants released from phosphogypsum, a by-product of the phosphate fertilizer industry, was studied using the multicomponent transport modeling program HP-1. HP-1 combines Hydrus 1D, simulating ... -
Stabilization of Peat by Infiltration of Reactants A feasibility study: infiltration of silica biopolymer suspension in peat
(2012)Summary Construction on peat soils has proven to be a challenging task to civil engineers as this soil type is highly compressible. Especially in densely populated delta area’s as the Rijn or the Maas delta in the western ... -
The effect of oxic degradation on organic temperature proxies: A case study from the coastal shelf off Honshu Island, Japan
(2013)Organic temperature proxies provide powerful tools to reconstruct past sea surface temperatures. An important requirement for those proxies is their stability towards diageneis. The most prominent diagenenic process is ...