Removal of Mercury from Wastewater Using a Constructed Wetland

Removal of mercury from municipal wastewater using a constructed wetland was studied. Wastewater, wetland plant, and sediment samples were analyzed using an advanced mercury analyzer AMA-254. Average concentrations of total mercury in inflow and outflow water were 0.157 and 0.057 µg L<sup>−1&l...

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Main Authors: Jan Šíma, Jiří Krejsa, Lubomír Svoboda
Format: Article
Language:English
Published: Croatian Chemical Society 2015-07-01
Series:Croatica Chemica Acta
Online Access:http://hrcak.srce.hr/file/209507
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spelling doaj-bc85fb66917e427caa123433230529862020-11-24T22:57:09ZengCroatian Chemical SocietyCroatica Chemica Acta0011-16431334-417X2015-07-0188216516910.5562/cca2529141989Removal of Mercury from Wastewater Using a Constructed WetlandJan Šíma0Jiří Krejsa1Lubomír Svoboda2Department of Applied Chemistry, University of South Bohemia, Faculty of Agriculture, Studentská 13, CZ-37005 České Budějovice, Czech RepublicInstitute of Chemistry and Biochemistry, University of South Bohemia, Faculty of Science, Branišovská 31, CZ-37005 České Budějovice, Czech RepublicDepartment of Applied Chemistry, University of South Bohemia, Faculty of Agriculture, Studentská 13, CZ-37005 České Budějovice, Czech RepublicRemoval of mercury from municipal wastewater using a constructed wetland was studied. Wastewater, wetland plant, and sediment samples were analyzed using an advanced mercury analyzer AMA-254. Average concentrations of total mercury in inflow and outflow water were 0.157 and 0.057 µg L<sup>−1</sup>, respectively. Significant fraction of mercury (38.2 %) was removed from wastewater during pretreatment. Mercury concentrations in vegetation (Phragmites australis) varied in the range of 0.0099−0.0105 and 0.0079−0.0086 mg kg<sup>−1</sup> for the above and belowground biomass, respectively. Total mercury concentrations in the constructed wetland sediments were 0.151 and 0.103 mg kg<sup>−1</sup> at distances 1 and 10 m from the inflow zone. Mercury can be precipitated and deposited at the initial part of the wetland bed and thus removed from wastewater. The formation of volatile mercury species is another mechanism of its removal. On the other hand, assimilation of Hg in wetland plants does apparently not contribute to mercury removal from wastewater.http://hrcak.srce.hr/file/209507
collection DOAJ
language English
format Article
sources DOAJ
author Jan Šíma
Jiří Krejsa
Lubomír Svoboda
spellingShingle Jan Šíma
Jiří Krejsa
Lubomír Svoboda
Removal of Mercury from Wastewater Using a Constructed Wetland
Croatica Chemica Acta
author_facet Jan Šíma
Jiří Krejsa
Lubomír Svoboda
author_sort Jan Šíma
title Removal of Mercury from Wastewater Using a Constructed Wetland
title_short Removal of Mercury from Wastewater Using a Constructed Wetland
title_full Removal of Mercury from Wastewater Using a Constructed Wetland
title_fullStr Removal of Mercury from Wastewater Using a Constructed Wetland
title_full_unstemmed Removal of Mercury from Wastewater Using a Constructed Wetland
title_sort removal of mercury from wastewater using a constructed wetland
publisher Croatian Chemical Society
series Croatica Chemica Acta
issn 0011-1643
1334-417X
publishDate 2015-07-01
description Removal of mercury from municipal wastewater using a constructed wetland was studied. Wastewater, wetland plant, and sediment samples were analyzed using an advanced mercury analyzer AMA-254. Average concentrations of total mercury in inflow and outflow water were 0.157 and 0.057 µg L<sup>−1</sup>, respectively. Significant fraction of mercury (38.2 %) was removed from wastewater during pretreatment. Mercury concentrations in vegetation (Phragmites australis) varied in the range of 0.0099−0.0105 and 0.0079−0.0086 mg kg<sup>−1</sup> for the above and belowground biomass, respectively. Total mercury concentrations in the constructed wetland sediments were 0.151 and 0.103 mg kg<sup>−1</sup> at distances 1 and 10 m from the inflow zone. Mercury can be precipitated and deposited at the initial part of the wetland bed and thus removed from wastewater. The formation of volatile mercury species is another mechanism of its removal. On the other hand, assimilation of Hg in wetland plants does apparently not contribute to mercury removal from wastewater.
url http://hrcak.srce.hr/file/209507
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