Chromium (III) removal by perennial emerging macrophytes in floating treatment wetlands - Publication - Bridge of Knowledge

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Chromium (III) removal by perennial emerging macrophytes in floating treatment wetlands

Abstract

Floating treatment wetlands (FTWs) are a sustainable solution to treat polluted water, but their role in chromium (Cr(III)) removal under neutral pH conditions remains poorly understood. This study evaluated the potential of FTWs planted with two perennial emergent macrophytes, Phragmites australis and Iris pseudacorus, to remove Cr(III) and nutrients (N and PO4-P) from water containing 7.5 mg/L TN, 1.8 mg/L PO4-P, and Cr(III) (500, 1000, and 2000 µg/L). Within 1 h of exposure, up to 96–99% of Cr was removed from the solution, indicating rapid precipitation. After 50 days, Phragmites bound 9–19% of added Cr, while Iris bound 5–22%. Both species accumulated Cr primarily in the roots (BCF > 1). Biomass production and growth development were inhibited in Cr treatments, but microscopic examination of plant roots revealed no histological changes at 500 and 1000 µg/L Cr, suggesting high resistance of the tested species. At 2000 µg/L Cr, both species exhibited disruptions in the arrangement of vessel elements in the stele and increased aerenchyma spaces in Phragmites. At the end of the experiment, 70–86% of TN and 54–90% of PO4-P were removed.

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DOI:
Digital Object Identifier (open in new tab) 10.1038/s41598-023-49952-y
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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Scientific Reports no. 13,
ISSN: 2045-2322
Language:
English
Publication year:
2023
Bibliographic description:
Nawrot N., Wojciechowska E., Mohsin M., Kuittinen S., Pappinen A., Matej-Łukowicz K., Szczepańska K., Cichowska A., Irshad M. A., Tack F. M. G.: Chromium (III) removal by perennial emerging macrophytes in floating treatment wetlands// Scientific Reports -,iss. 1 (2023), s.1-11
DOI:
Digital Object Identifier (open in new tab) 10.1038/s41598-023-49952-y
Sources of funding:
  • IDUB
Verified by:
Gdańsk University of Technology

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