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Publication Type J
Authors Guesdon, G., A. de Santiago-Martin and R. Galvez-Cloutier
Title Phytodesalinization potential of Typha angustifolia, Juncus maritimus, and Eleocharis palustris for removal of de-icing salts from runoff water
Source Environmental Science and Pollution Research
Author Keywords De-icing salts Road runoff Constructed wetland Phytodesalinization NaCl removal Halophytes Salt-tolerant plants constructed wetland waste-water road-salt saline aquaculture metal mobility highway runoff heavy-metals chloride impact plants
Abstract Typha angustifolia, Juncus maritimus, and Eleocharis palustris were evaluated for de-icing salt removal from runoff water. Plants were exposed to a range of de-icing salt levels (0.2, 0.7, 4, 8, and 13 dS m(-1)) in laboratory-scale subsurface constructed wetlands (CWs) for 2 months under greenhouse conditions. Effluent characteristics, plant height, biomass, and Cl and Na removal rates and uptake were monitored. More water volume was retained in CWs of T. angustifolia (similar to 60 %) than of J. maritimus and E. palustris (similar to 37.5 %), which accounted for the electrical conductivity increase in effluents (1.3-1.9-fold). Based on the NaCl removal rate, T. angustifolia showed the greatest phytodesalinization ability (31-60 %) with the highest removal at the lowest salt levels (0.2-0.7 dS m(-1)), followed by J. maritimus (22-36 %) without differences in removal among levels, and E. palustris (3-26 %) presenting a removal rate highly decreased with increasing salt levels. Plant height and biomass were stimulated at low de-icing salt levels, but, at higher levels, T. angustifolia and E. palustris growth was inhibited (tolerance index similar to 67 and 10 %, respectively, in the worst cases). Salt amounts in aboveground biomass in g m(-2) differed among levels and ranged as follows: 13.6-29.1 (Cl), 4.2-9.3 (Na; T. angustifolia); 7.0-12.0 (Cl), 2.7-6.4 (Na; J. maritimus); and 0.9-7.6 (Cl), 0.3-1.6 (Na; E. palustris). Chloride and Na translocation decreased with de-icing salt increase in T. angustifolia, while no significant differences were found in J. maritimus, which is interesting for harvesting purposes.
Author Address [Guesdon, Gaelle; de Santiago-Martin, Ana; Galvez-Cloutier, Rosa] Univ Laval, Fac Sci & Genie, Dept Genie Civil & Genie Eaux, Pavillon Adrien Pouliot,1065 Ave Med, Quebec City, PQ G1V 0A6, Canada. Guesdon, G (reprint author), Univ Laval, Fac Sci & Genie, Dept Genie Civil & Genie Eaux, Pavillon Adrien Pouliot,1065 Ave Med, Quebec City, PQ G1V 0A6, Canada. gaelle.guesdon@gci.ulaval.ca
ISSN 0944-1344
ISBN 0944-1344
29-Character Source Abbreviation Environ. Sci. Pollut. Res.
Publication Date Oct
Year Published 2016
Volume 23
Issue 19
Beginning Page 19634-19644
Digital Object Identifier (DOI) 10.1007/s11356-016-7176-1
Unique Article Identifier WOS:000384555200063
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