Abstract：
:The aim of this study was to evaluate the efficiency of a large scale washing/wet sieving technique for a soil contaminated with wood impregnation chemicals by 1) defining the final distribution of trace elements (As, Cu, Cr, Zn) and polycyclic aromatic hydrocarbons (PAH) in separated soil particle size fractions; and 2) defining the leaching behavior of the contaminants in these soil fractions. A soil washing experiment was implemented at waste management facility in Sweden using a full scale soil sorting and washing equipment. Five tons of soil was loaded to the equipment and wet-sieved into the following fractions: >16 mm, 8-16 mm, 2-8 mm, 0.2-2 mm, <0.2 mm and a fraction that floated on top of the slurry before the final separation phase, composed of organic matter (OM). Analysis of total concentrations of contaminants in all soil fractions indicated that wet sieving/soil washing was not efficient to reduce the total volume of soil that needs further treatment. Even the coarsest soil fractions (>8 mm) contained elevated concentrations of total As and PAH. Leaching of As from all washed soil fractions was so high, that none of the particle size fractions could be disposed of without additional treatment.
journal_name
Chemospherejournal_title
Chemosphereauthors
Kumpiene J,Nordmark D,Carabante I,Sužiedelytė-Visockienė J,Aksamitauskas VČdoi
10.1016/j.chemosphere.2017.05.140subject
Has Abstractpub_date
2017-10-01 00:00:00pages
13-19eissn
0045-6535issn
1879-1298pii
S0045-6535(17)30847-0journal_volume
184pub_type
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