No effect of digestate amendment on Cs-137 and Sr-90 translocation in lysimeter experiments

The soil-plant transfer of Cs-137 and Sr-90 in different crops was determined with respect to the present-day amendment practice of using digestate from biogas fermenters. The studies were performed using large lysimeters filled with undisturbed luvisol monoliths. In contrast to the conservative tra...

Full description

Saved in:

Bibliographic Details
Published in:	Chemosphere (Oxford) Vol. 172; pp. 310 - 315
Main Authors:	Mehmood, Khalid, Berns, Anne E., Pütz, Thomas, Burauel, Peter, Vereecken, Harry, Opitz, Thorsten, Zoriy, Myroslav, Hofmann, Diana
Format:	Journal Article
Language:	English
Published:	England Elsevier Ltd 01-04-2017
Subjects:	Agro-ecosystem Biodegradation, Environmental Biofuels Biological Transport Cesium Radioisotopes - chemistry Cesium Radioisotopes - isolation & purification Cesium Radioisotopes - metabolism Crops, Agricultural - metabolism Oat Radioactive contaminants Soil - chemistry Soil Pollutants, Radioactive - chemistry Soil Pollutants, Radioactive - isolation & purification Soil Pollutants, Radioactive - metabolism Strontium Radioisotopes - chemistry Strontium Radioisotopes - isolation & purification Strontium Radioisotopes - metabolism Transfer factor Undisturbed soil monolith Wheat Undisturbed soil monolith Transfer factor Oat Radioactive contaminants Agro-ecosystem Wheat
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The soil-plant transfer of Cs-137 and Sr-90 in different crops was determined with respect to the present-day amendment practice of using digestate from biogas fermenters. The studies were performed using large lysimeters filled with undisturbed luvisol monoliths. In contrast to the conservative tracer, Br−, neither of the studied radionuclides showed a significant vertical translocation nor effect of the applied digestate amendment compared to a non-amended control was found. Furthermore, no significant plant uptake was measured for both nuclides in wheat or oat as indicated by the low transfer factors between soil-shoot for Cs-137 (TF 0.001–0.010) and for Sr-90 (0.10–0.51). The transfer into nutritionally relevant plant parts was even lower with transfer factors for soil-grain for Cs-137 (TF 0.000–0.001) and for Sr-90 (0.01–0.06). Hence, the amendment with biogas digestate is unfortunately not an option to further reduce plant uptake of these radionuclides in agricultural crops, but it does not increase plant uptake either. •Biogas-digestate soil amendment does not influence uptake of radionuclides (RN).•RN transfer factors (TF) of grains are smaller than TF of whole plants.•Crops are not be suited for radioactive phytoremediation purposes.
ISSN:	0045-6535 1879-1298
DOI:	10.1016/j.chemosphere.2016.12.134