Removal of dissolved metals in wetland columns filled with shell grits and plant biomass

Firoozeh Bavandpour; Yuanchun Zou; Yinghe He; Tanveer Saeed; Yong Sun; Guangzhi Sun

doi:10.1016/j.cej.2017.08.112

Removal of dissolved metals in wetland columns filled with shell grits and plant biomass

Firoozeh Bavandpour, Yuanchun Zou, Yinghe He, Tanveer Saeed, Yong Sun, Guangzhi Sun

Research output: Journal Publication › Article › peer-review

43 Citations (Scopus)

Abstract

Two lab-scale wetland systems were studied for the removal of dissolved Cu, Mn, Fe, Pb and Zn. Vegetated with Typha domingensis, each system consisted of two units, a vertical and a horizontal flow wetland column, which were filled with either crushed sea shell grits or composted green waste as main media. A synthetic acidic wastewater was prepared by dissolving H₂SO₄, Pb(CH₃COO)₂, MnCl₂, FeSO₄, CuSO₄ and ZnSO₄ in a distilled water. As it passed through each column, metal concentrations, pH and conductivity were monitored. The pH value of the wastewater increased in the shell grit columns, where dissolved metals were almost completely (>99%) removed. In the wetland columns filled with the green waste, the average percentage removals were 90, 77, 27, 98 and 75% for Cu, Mn, Fe, Pb and Zn, respectively. Scanning electron microscopy and energy-dispersive spectroscopy (SEM-EDS) analysis showed that the surface characteristics of the shell grits remained largely unchanged before and after being used in the columns; but the mass compositions of carbon increased, whereas calcium and oxygen decreased. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to further analyse the chemical compositions and functional groups of the surfaces of the shell grits.

Original language	English
Pages (from-to)	234-241
Number of pages	8
Journal	Chemical Engineering Journal
Volume	331
DOIs	https://doi.org/10.1016/j.cej.2017.08.112
Publication status	Published - 2018
Externally published	Yes

Keywords

Constructed wetland
Heavy metals
Nonhazardous waste
Wastewater treatment

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cej.2017.08.112

Cite this

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title = "Removal of dissolved metals in wetland columns filled with shell grits and plant biomass",

abstract = "Two lab-scale wetland systems were studied for the removal of dissolved Cu, Mn, Fe, Pb and Zn. Vegetated with Typha domingensis, each system consisted of two units, a vertical and a horizontal flow wetland column, which were filled with either crushed sea shell grits or composted green waste as main media. A synthetic acidic wastewater was prepared by dissolving H2SO4, Pb(CH3COO)2, MnCl2, FeSO4, CuSO4 and ZnSO4 in a distilled water. As it passed through each column, metal concentrations, pH and conductivity were monitored. The pH value of the wastewater increased in the shell grit columns, where dissolved metals were almost completely (>99%) removed. In the wetland columns filled with the green waste, the average percentage removals were 90, 77, 27, 98 and 75% for Cu, Mn, Fe, Pb and Zn, respectively. Scanning electron microscopy and energy-dispersive spectroscopy (SEM-EDS) analysis showed that the surface characteristics of the shell grits remained largely unchanged before and after being used in the columns; but the mass compositions of carbon increased, whereas calcium and oxygen decreased. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to further analyse the chemical compositions and functional groups of the surfaces of the shell grits.",

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author = "Firoozeh Bavandpour and Yuanchun Zou and Yinghe He and Tanveer Saeed and Yong Sun and Guangzhi Sun",

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year = "2018",

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T1 - Removal of dissolved metals in wetland columns filled with shell grits and plant biomass

AU - Bavandpour, Firoozeh

AU - Zou, Yuanchun

AU - He, Yinghe

AU - Saeed, Tanveer

AU - Sun, Yong

AU - Sun, Guangzhi

PY - 2018

Y1 - 2018

N2 - Two lab-scale wetland systems were studied for the removal of dissolved Cu, Mn, Fe, Pb and Zn. Vegetated with Typha domingensis, each system consisted of two units, a vertical and a horizontal flow wetland column, which were filled with either crushed sea shell grits or composted green waste as main media. A synthetic acidic wastewater was prepared by dissolving H2SO4, Pb(CH3COO)2, MnCl2, FeSO4, CuSO4 and ZnSO4 in a distilled water. As it passed through each column, metal concentrations, pH and conductivity were monitored. The pH value of the wastewater increased in the shell grit columns, where dissolved metals were almost completely (>99%) removed. In the wetland columns filled with the green waste, the average percentage removals were 90, 77, 27, 98 and 75% for Cu, Mn, Fe, Pb and Zn, respectively. Scanning electron microscopy and energy-dispersive spectroscopy (SEM-EDS) analysis showed that the surface characteristics of the shell grits remained largely unchanged before and after being used in the columns; but the mass compositions of carbon increased, whereas calcium and oxygen decreased. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to further analyse the chemical compositions and functional groups of the surfaces of the shell grits.

AB - Two lab-scale wetland systems were studied for the removal of dissolved Cu, Mn, Fe, Pb and Zn. Vegetated with Typha domingensis, each system consisted of two units, a vertical and a horizontal flow wetland column, which were filled with either crushed sea shell grits or composted green waste as main media. A synthetic acidic wastewater was prepared by dissolving H2SO4, Pb(CH3COO)2, MnCl2, FeSO4, CuSO4 and ZnSO4 in a distilled water. As it passed through each column, metal concentrations, pH and conductivity were monitored. The pH value of the wastewater increased in the shell grit columns, where dissolved metals were almost completely (>99%) removed. In the wetland columns filled with the green waste, the average percentage removals were 90, 77, 27, 98 and 75% for Cu, Mn, Fe, Pb and Zn, respectively. Scanning electron microscopy and energy-dispersive spectroscopy (SEM-EDS) analysis showed that the surface characteristics of the shell grits remained largely unchanged before and after being used in the columns; but the mass compositions of carbon increased, whereas calcium and oxygen decreased. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to further analyse the chemical compositions and functional groups of the surfaces of the shell grits.

KW - Constructed wetland

KW - Heavy metals

KW - Nonhazardous waste

KW - Wastewater treatment

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SN - 1385-8947

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Removal of dissolved metals in wetland columns filled with shell grits and plant biomass

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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