Abstract：
:This work describes the application electrokinetic fence technology to a soil polluted with herbicides in a large prototype containing 32 m3 of soil. It compares performance in this large facility with results previously obtained in a pilot-scale mockup (175 L) and with results obtained in a lab-scale soil column (1 L), all of them operated under the same driving force: an electric field of 1.0 V cm-1. Within this wide context, this work focuses on the effect on inorganic species contained in soil and describes the main processes occurring in the prototype facility, as well as the differences observed respect to the lower scale plants. Thus, despite the same processes can be described in the three plants, important differences are observed in the evolution of the current intensity, moisture and conductivity. They can be related to the less important electroosmotic fluxes in the larger facilities and to the very different distances between electrodes, which lead to very different distribution of species and even to a very different evolution of the resulting current intensity. 2-D maps of the main species at different relevant moments of the test are discussed and important information is drawn from them. Ions depletion from soil appears as a very important problem which should be prevented if the effect of natural bioremediation and/or phytoremediation on the removal or organics aims to be accounted.
journal_name
Chemospherejournal_title
Chemosphereauthors
López-Vizcaíno R,Risco C,Isidro J,Rodrigo S,Saez C,Cañizares P,Navarro V,Rodrigo MAdoi
10.1016/j.chemosphere.2016.09.113subject
Has Abstractpub_date
2017-01-01 00:00:00pages
540-548eissn
0045-6535issn
1879-1298pii
S0045-6535(16)31314-5journal_volume
166pub_type
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