Trace elements in Phragmites australis growing in constructed wetlands for treatment of municipal wastewater

0342906 - ÚVGZ 2011 RIV NL eng J - Journal Article
Vymazal, Jan - Kröpfelová, L. - Švehla, J. - Chrastný, V. - Štíchová, J.
Trace elements in Phragmites australis growing in constructed wetlands for treatment of municipal wastewater.
Ecological Engineering. Roč. 35, č. 2 (2009), s. 303-309. ISSN 0925-8574. E-ISSN 1872-6992
Institutional research plan: CEZ:AV0Z60870520
Keywords : Nutrient-enriched swamp * phragmites australis * trace elements
Subject RIV: EH - Ecology, Behaviour
Impact factor: 2.745, year: 2009

Biomass of Phragmites australis growing in four constructed wetlands with horizontal subsurface flow (HF CWs) designed for treatment of municipal sewage in the Czech Republic have been analyzed for 19 trace elements. The biomass was harvested during the peak standing crop in early September and divided into stems, leaves, flowers, roots and rhizomes. Concentrations of monitored elements in both aboveground and belowground plant tissues were similar to those found in plants growing in natural stands. The highest concentrations were recorded for Al, Fe, Mn, Ba and Zn while the lowest concentrations were those of Hg, U and Cd. Concentrations decreased in the order of roots > rhizomes > leaves > stems. The root/leaf ratio averaged 70 and varied between 1.4 for molybdenum and 392 for cobalt. The belowground/aboveground concentration ratio ranged between 0.9 and 69.5 with an average value of 19.
Permanent Link: http://hdl.handle.net/11104/0185514