Remediation oriented use of conceptual site models at WISMUT GmbH: Rehabilitation of the Trünzig tailings management area

Jakubick, A. T.; Kahnt, René

doi:10.1007/978-3-642-55668-5_2

Cited by 5 publications

(2 citation statements)

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“…Former uranium mining sites of Saxony and Thuringia serve as examples for problems concerning contaminations of water bodies with heavy metals and especially radionuclides. From dumps, tailings, and other remnants of uranium mining contaminants like uranium, other radionuclides and arsenic are discharged into surface and groundwater . Uranium concentrations of up to 500 μg L −1 in the water body have been observed − .…”

Section: Introductionmentioning

confidence: 99%

Enrichment of Uranium in Particulate Matter during Litter Decomposition Affected byGammarus pulexL.

Schaller

Weiske

Mkandawire

et al. 2008

Environ. Sci. Technol.

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Plant litter and organic matter of aquatic sediments provide a significant sink of soluble inorganic uranium species in contaminated ecosystems. The uranium content in detritus has been observed to increase significantly during decomposition. However, the influence of the decomposer community on uranium fixation remains unclear. In view of this, we investigated the influence of a shredder (the freshwater shrimp Gammarus pulex L) on uranium fixation and mobilization during the degradation of plant litter. Leaf litter from Alnus glutinosa (L.) Gaertn. with 1152 mg kg(-1) U of dry biomass (DM) and without uranium was used in a 14-day laboratory experiment. The uranium concentration in the particulate organic material (POM) at the end of experiment was 1427 mg kg(-1) DM. After 14 days of decay, the residues of the leaves show a uranium concentration of 644 mg kg(-1) DM. Uranium concentrations in the media initially increased reaching up to 63.9 microg L(-1) but finally decreased to an average value of 34.3 microg L(-1). Atthe same time, DOC levels increased from 2.43 mg L(-1) up to 11.4 mg L(-1) in the course of the experiment Hence, inorganic uranium fixation onto particulate organic matter was enhanced by the activity of G. pulex.

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Section: Introductionmentioning

confidence: 99%

Enrichment of Uranium in Particulate Matter during Litter Decomposition Affected byGammarus pulexL.

Schaller

Weiske

Mkandawire

et al. 2008

Environ. Sci. Technol.

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“…High metal and metalloid concentrations in ground and surface waters are a global problem, enhanced by mining activities (Jakubick and Kahnt 2002). These high concentrations may be responsible for shifting food webs and hence changing ecosystem processes.…”

Section: Introductionmentioning

confidence: 99%

Invertebrates Minimize Accumulation of Metals and Metalloids in Contaminated Environments

Schaller¹,

Brackhage²,

Dudel³

2010

Water Air Soil Pollut

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Many studies were conducted measuring the lethal concentration of pollutants by using a contaminated solution or polluted sediments. Considering the impact of polluted food on mortality and uptake quantity of invertebrate shredders in batch cultures, little is known about, e.g. uranium and cadmium. Consequently, we investigated in situ the impact of metal and metalloid polluted food and water on Gammarus pulex L. under nature-like conditions. In contrast to other publications, a very low mortality rate of the invertebrates was found. Furthermore, fixation of elements by G. pulex was shown to be low compared to initial concentrations. Fixation of non essential metals and metalloids is shown to take place mainly on the surface of the invertebrates. This is deduced from easy desorption of a relevant amount of fixed metals and metalloids. It is concluded that the accumulation of metals and metalloids in situ under nature-like conditions within the food web via invertebrate shredders is very low. The invertebrates seem to minimize the uptake of non essential elements in the presence of nutrient-rich food even in habitats with higher contamination levels. Hence, invertebrates seem to be adapted to higher contamination levels in their favourable habitats.

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Returning the WISMUT Legacy to Productive Use

Hagen

Jakubick

Uranium in the Environment

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Remediation oriented use of conceptual site models at WISMUT GmbH: Rehabilitation of the Trünzig tailings management area

Cited by 5 publications

References 0 publications

Enrichment of Uranium in Particulate Matter during Litter Decomposition Affected byGammarus pulexL.

Enrichment of Uranium in Particulate Matter during Litter Decomposition Affected byGammarus pulexL.

Invertebrates Minimize Accumulation of Metals and Metalloids in Contaminated Environments

Returning the WISMUT Legacy to Productive Use

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