TY  - JOUR
A1  - Busch, Jan Philip
A1  - Meissner, Tobias
A1  - Potthoff, Annegret
A1  - Oswald, Sascha Eric
T1  - Investigations on mobility of carbon colloid supported nanoscale zero-valent iron (nZVI) in a column experiment and a laboratory 2D-aquifer test system
JF  - Environmental science and pollution research : official organ of the EuCheMS Division for Chemistry and the Environment, EuCheMS DCE
N2  - Nanoscale zero-valent iron (nZVI) has recently gained great interest in the scientific community as in situ reagent for installation of permeable reactive barriers in aquifer systems, since nZVI is highly reactive with chlorinated compounds and may render them to harmless substances. However, nZVI has a high tendency to agglomerate and sediment; therefore it shows very limited transport ranges. One new approach to overcome the limited transport of nZVI in porous media is using a suited carrier colloid. In this study we tested mobility of a carbon colloid supported nZVI particle "Carbo-Iron Colloids" (CIC) with a mean size of 0.63 mu m in a column experiment of 40 cm length and an experiment in a two-dimensional (2D) aquifer test system with dimensions of 110x40x5 cm. Results show a breakthrough maximum of 82 % of the input concentration in the column experiment and 58 % in the 2D-aquifer test system. Detected residuals in porous media suggest a strong particle deposition in the first centimeters and few depositions in the porous media in the further travel path. Overall, this suggests a high mobility in porous media which might be a significant enhancement compared to bare or polyanionic stabilized nZVI.
KW  - Carbon colloid
KW  - Nanoscale zero-valent iron (nZVI)
KW  - Aquifer systems
Y1  - 2014
U6  - https://doi.org/10.1007/s11356-014-3049-7
SN  - 0944-1344
SN  - 1614-7499
VL  - 21
IS  - 18
SP  - 10908
EP  - 10916
PB  - Springer
CY  - Heidelberg
ER  -