Skip to Main content Skip to Navigation
Journal articles

Effect of organic amendments on the mobility of trace elements in phytoremediated techno-soils: role of the humic substances

Abstract : The efficiency of aided phytostabilization using organic amendments such as ramial chipped wood (RCW) and composted sewage sludge (CSS) was studied on contaminated techno-soils, on nine experimental plots. The objective was to characterize the role of fulvic (FA) and humic acids (HA) on the mobilization of trace elements, specifically As, Cu, Mo, Pb and Zn. Results showed that the addition of CSS increased the total organic carbon and nitrogen content more than with RCW and as a result, the C/N ratio in the CSS soil was higher than in the RCW and non-amended (NE) soil, reflecting the high decomposition of soil organic matter in the CSS soil compared with the other soils. The RCW and CSS amendments increased the hydrogen index (HI) values and the oxygen index (OI) values compared with the NE soil, especially for the soil treated with CSS which contained more aliphatic than aromatic compounds. The addition of CSS to the techno-soil significantly increased the percentage of C org associated with the HA fractions compared with the RCW and NE soils. The soil amended with CSS showed the highest E 4/E 6 ratio and the lowest E 2/E 3 ratio of FA. Zn and As were more abundant in the FA fraction than in the HA fraction, whereas Pb, Cu and Mo were more associated to HA than to FA in the treated and untreated soils, which may explain the difference in their mobility and availability.
Complete list of metadatas

Cited literature [65 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01019304
Contributor : Nathalie Pothier <>
Submitted on : Friday, March 18, 2016 - 3:50:31 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:14 AM
Long-term archiving on: : Monday, June 20, 2016 - 1:42:42 AM

File

ESPR-D-14-00298_R1.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License

Identifiers

Citation

Nour Hattab, Maryline Soubrand-Colin, Régis Guégan, Mikael Motelica-Heino, Xavier Bourrat, et al.. Effect of organic amendments on the mobility of trace elements in phytoremediated techno-soils: role of the humic substances. Environmental Science and Pollution Research, Springer Verlag, 2014, 21 (17), pp.10470-10480. ⟨10.1007/s11356-014-2959-8⟩. ⟨insu-01019304⟩

Share

Metrics

Record views

654

Files downloads

1067