Skip to Main content Skip to Navigation
Journal articles

Macrophyte potential to treat leachate contaminated with wood preservatives: plant tolerance and bioaccumulation capacity

Abstract : Pentachlorophenol and chromated copper arsenate (CCA) have been used worldwide as wood preservatives, but these compounds can toxify ecosystems when they leach into the soil and water. This study aimed to evaluate the capacity of four treatment wetland macrophytes, Phalaris arundinacea, Typha angustifolia, and two subspecies of Phragmites australis, to tolerate and treat leachates containing wood preservatives. The experiment was conducted using 96 plant pots in 12 tanks filled with three leachate concentrations compared to uncontaminated water. Biomass production and bioaccumulation were measured after 35 and 70 days of exposure. There were no significant effects of leachate contamination concentration on plant biomass for any species. No contaminants were detected in aboveground parts of the macrophytes, precluding their use for phytoextraction within the tested contamination levels. However, all species accumulated As and chlorinated phenols in belowground parts, and this accumulation was more prevalent under a more concentrated leachate. Up to 0.5 mg pentachlorophenol/kg (from 81 mu g/L in the leachate) and 50 mg As/kg (from 330 mu g/L in the leachate) were accumulated in the belowground biomass. Given their high productivity and tolerance to the contaminants, the tested macrophytes showed phytostabilization potential and could enhance the degradation of phenols from leachates contaminated with wood preservatives in treatment wetlands.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-03164155
Contributor : Marion Desailly <>
Submitted on : Tuesday, March 9, 2021 - 4:48:58 PM
Last modification on : Friday, July 9, 2021 - 12:02:07 PM

File

2020_Demers_Plants.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Emmanuelle Demers, Margit Kõiv-Vainik, Sara Yavari, Michel Mench, Lilian Marchand, et al.. Macrophyte potential to treat leachate contaminated with wood preservatives: plant tolerance and bioaccumulation capacity. Plants, MDPI, 2020, 9 (12), pp.1-15. ⟨10.3390/plants9121774⟩. ⟨hal-03164155⟩

Share

Metrics

Record views

30

Files downloads

15