Phytoremediation of Selenium Using Subsurface-Flow Constructed Wetland

The potential of two plant species, Phragmites australis (common reed) and Typha latifolia (cattail), in the phytoremediation process of selenium (Se) was studied in subsurface-flow constructed wetland (SSF). Se was supplemented continuously at a concentration of 100 μg Se L −1 in the inlet of the c...

Full description

Saved in:
Bibliographic Details
Published in:International journal of phytoremediation 2006-09, Vol.8 (3), p.187-198
Main Authors: Azaizeh, Hassan, Salhani, Nazir, Sebesvari, Zita, Shardendu, Shardendu, Emons, Hendrik
Format: Article
Language:English
Subjects:
Aquatic macrophytes (Gramineae)
Biodegradation, Environmental
Biomass
Bioremediation
Environmental conditions
Heavy metals
Metals
Phragmites
phytoremediation
Plant Leaves - metabolism
Plant Roots - metabolism
Plant Stems - metabolism
Poaceae - metabolism
Research centers
Rhizome - metabolism
Selenium - metabolism
subsurface-flow constructed wetland (SSF)
Typha
Typhaceae - metabolism
Water Movements
wetland plants
Wetlands
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The potential of two plant species, Phragmites australis (common reed) and Typha latifolia (cattail), in the phytoremediation process of selenium (Se) was studied in subsurface-flow constructed wetland (SSF). Se was supplemented continuously at a concentration of 100 μg Se L −1 in the inlet of the cultivation beds of the SSF. Water samples collected from the outlet of the Phragmites bed after 1, 3, 6, 9, and 12 wk of treatments showed that Se content was under detectable limits. Water samples collected from the Typha bed at the same five periods showed that Se concentrations in the outlet were 55, 47, 65, 76, and 25 μg/L, respectively. The results of bioaccumulation in the biomass of both species after 12 wk of treatment indicated that Typha plants accumulated Se mainly in fine roots. Phragmites accumulated Se mainly in leaves and rhizomes, and moderate levels were found in stems and fine organic materials. The results indicate that common reed is a very good species for Se phytoextraction and phytostabilization (immobilization) and that cattail is only a phytostabilization species. The use of common reed and cattail for Se phytoremediation in a SSF system and in constructed wetland models are discussed.
ISSN:1522-6514
1549-7879
DOI:10.1080/15226510600846723