Long-term Cu stabilization and biomass yields of Giant reed and poplar after adding a biochar, alone or with iron grit, into a contaminated soil from a wood preservation site

Abstract : A 2-year pot experiment was carried out to examine the aging effect of biochar (B), alone or combined with iron grit (Z), on Cu stabilization and plant growth in a contaminated soil (964 mg Cu kg− 1) from a wood preservation site. The experiment consisted in 3 soil treatments, either planted with Arundo donax L. (Ad) or Populus nigra L. (Pn): (1) untreated Cu-contaminated soil (Ad, Pn); (2) Unt + 1% (w/w) B (AdB, PnB), and (3) Unt + 1% B + 1% Z (AdBZ, PnBZ). After 22 months, the soil pore water (SPW) was sampled and roots and shoots were harvested. The SPW compositions at 3 and 22 months were compared, showing that the SPW Cu2 + concentration increased again in the PnB and PnBZ soils. Cultivation of A. donax enhanced the dissolved organic matter concentration in the SPW, which decreased its Cu2 + concentration but promoted its total Cu concentration in the Ad and AdB soils. Adding Z with B reduced both SPW Cu2 + and Cu concentrations in the pots cultivated by A. donax and P. nigra as compared to B alone. The B and BZ treatments did not enhance root and shoot yields of both plant species as compared to the Unt soil but their shoot Cu concentrations were in the range of common values.
Complete list of metadatas

Cited literature [65 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01414495
Contributor : Nathalie Pothier <>
Submitted on : Monday, December 12, 2016 - 2:21:37 PM
Last modification on : Friday, May 10, 2019 - 1:54:18 PM
Long-term archiving on : Monday, March 27, 2017 - 7:24:48 PM

File

Oustrière-ScienceTotalEnviron...
Files produced by the author(s)

Licence


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

Identifiers

Collections

Citation

Nadège Oustriere, Lilian Marchand, Nathalie Lottier, Mikael Motelica-Heino, Michel Mench. Long-term Cu stabilization and biomass yields of Giant reed and poplar after adding a biochar, alone or with iron grit, into a contaminated soil from a wood preservation site. Science of the Total Environment, Elsevier, 2017, 579, pp.620-627. ⟨10.1016/j.scitotenv.2016.11.048⟩. ⟨insu-01414495⟩

Share

Metrics

Record views

508

Files downloads

388