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, b

SUBMITTER: Nawrot N 

PROVIDER: S-EPMC10725432 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature