Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland.

Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Research Abstract Details 

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Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Abstract Text:

Jianguo Liu,Yuan Dong,Hai Xu,Deke Wang,Jiakuan Xu,Jianguo Liu,Yuan Dong,Hai Xu,Deke Wang,Jiakuan Xu,

Uptake and distribution of Cd, Pb and Zn by 19 wetland plant species were investigated with experiments in small-scale plot constructed wetlands, into which artificial wastewater dosed with Cd, Pb and Zn at concentrations of 0.5, 2.0 and 5.0mgl(-1) was irrigated. The results showed that the removal efficiency of Cd, Pb and Zn from the wastewater were more than 90%. Generally, there were tens differences among the 19 plant species in the concentrations and quantity accumulations of the heavy metals in aboveground part, underground part and whole plants. The distribution ratios into aboveground parts for the metals absorbed by plants varied also largely from about 30% to about 90%. All the plants accumulated, in one harvest, 19.85% of Cd, 22.55% of Pb and 23.75% of Zn that were added into the wastewater. Four plant species, e.g. Alternanthera philoxeroides, Zizania latifolia, Echinochloa crus-galli and Polygonum hydropiper, accumulated high amounts of Cd, Pb and Zn. Monochoria vaginalis was capable for accumulating Cd and Pb, Isachne globosa for Cd and Zn, and Digitaria sanguinalis and Fimbristylis miliacea for Zn. The results indicated that the plants, in constructed wetland for the treatment of wastewater polluted by heavy metals, can play important roles for removal of heavy metals through phytoextraction. Selection of plant species for use in constructed wetland will influence considerably removal efficiency and the function duration of the wetland.

Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Publishing Authors By Initials

J Liu,Y Dong,H Xu,D Wang,J Xu,J Liu,Y Dong,H Xu,D Wang,J Xu,

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Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of hazardous materials

VOLUME: 147

Page Numbers: 947-53

Journal Abbreviation: J. Hazard. Mater.

ISSN: 0304-3894

DAY: 2

MONTH: 02

YEAR: 2007

Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Information

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LANGUAGE: eng

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AFFILIATION: Department of Environmental and Safety Engineering, Jiangsu Polytechnic University, University Town, Changzhou, Jiangsu 213164, China. ljg@jpu.edu.cn

Country: Netherlands

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MEDLINETA: J Hazard Mater

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