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Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity

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 angust...

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Autores principales: Demers, Emmanuelle, Kõiv-Vainik, Margit, Yavari, Sara, Mench, Michel, Marchand, Lilian, Vincent, Julie, Frédette, Chloé, Comeau, Yves, Brisson, Jacques
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7765096/
https://www.ncbi.nlm.nih.gov/pubmed/33327610
http://dx.doi.org/10.3390/plants9121774
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author Demers, Emmanuelle
Kõiv-Vainik, Margit
Yavari, Sara
Mench, Michel
Marchand, Lilian
Vincent, Julie
Frédette, Chloé
Comeau, Yves
Brisson, Jacques
author_facet Demers, Emmanuelle
Kõiv-Vainik, Margit
Yavari, Sara
Mench, Michel
Marchand, Lilian
Vincent, Julie
Frédette, Chloé
Comeau, Yves
Brisson, Jacques
author_sort Demers, Emmanuelle
collection PubMed
description 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 µg/L in the leachate) and 50 mg As/kg (from 330 µg/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.
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spelling pubmed-77650962020-12-27 Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity Demers, Emmanuelle Kõiv-Vainik, Margit Yavari, Sara Mench, Michel Marchand, Lilian Vincent, Julie Frédette, Chloé Comeau, Yves Brisson, Jacques Plants (Basel) Article 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 µg/L in the leachate) and 50 mg As/kg (from 330 µg/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. MDPI 2020-12-14 /pmc/articles/PMC7765096/ /pubmed/33327610 http://dx.doi.org/10.3390/plants9121774 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Demers, Emmanuelle
Kõiv-Vainik, Margit
Yavari, Sara
Mench, Michel
Marchand, Lilian
Vincent, Julie
Frédette, Chloé
Comeau, Yves
Brisson, Jacques
Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title_full Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title_fullStr Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title_full_unstemmed Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title_short Macrophyte Potential to Treat Leachate Contaminated with Wood Preservatives: Plant Tolerance and Bioaccumulation Capacity
title_sort macrophyte potential to treat leachate contaminated with wood preservatives: plant tolerance and bioaccumulation capacity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7765096/
https://www.ncbi.nlm.nih.gov/pubmed/33327610
http://dx.doi.org/10.3390/plants9121774
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