Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater

Baohua Li; Xiangliang Pan; Daoyong Zhang; Duu-Jong Lee; Fahad A. Al-Misned; M. Golam Mortuza

doi:10.1016/j.ecoleng.2015.01.027

Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater

Baohua Li
, Xiangliang Pan^*
, Daoyong Zhang
, Duu-Jong Lee
, Fahad A. Al-Misned
, M. Golam Mortuza

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

77 Citations (Scopus)

Abstract

Nitrate and arsenic are common pollutants in groundwater. However, we are still lacking technologies that can remove nitrate and arsenic simultaneously using a single species of microorganism. In the present study, the potential of synchronous removal of nitrate and arsenite from water by a single anaerobic nitrate-reducing Fe(II) oxidizing Citrobacter freundii strain PXL1 was assessed. The strain PXL1 could grow well in arsenite concentration of 2.85-13.65. μM and efficiently oxidize Fe(II), reduce nitrate and remove As(III) from water. Scanning electron microscopy, X-ray diffraction spectroscopy, and Fourier transform infrared spectroscopy analysis showed that the strain PXL1 produced poorly crystalline Fe(III) oxides. As(III) was removed mainly by adsorption and co-precipitation of the biogenic Fe(III) oxides. The anaerobic nitrate-dependent Fe(II) oxidizing bacteria including C. freundii PXL1 are promising microbes for in situ remediation of nitrate and arsenite contaminated groundwater.

Original language	English
Pages (from-to)	196-201
Journal	Ecological Engineering
Volume	77
DOIs	https://doi.org/10.1016/j.ecoleng.2015.01.027
Publication status	Published - 1 Apr 2015
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

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

SDG 6 Clean Water and Sanitation

Research Keywords

As(III) removal
Biogenic iron oxides
Ferrous iron oxidizing bacteria
Nitrate reduction

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10.1016/j.ecoleng.2015.01.027

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title = "Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater",

abstract = "Nitrate and arsenic are common pollutants in groundwater. However, we are still lacking technologies that can remove nitrate and arsenic simultaneously using a single species of microorganism. In the present study, the potential of synchronous removal of nitrate and arsenite from water by a single anaerobic nitrate-reducing Fe(II) oxidizing Citrobacter freundii strain PXL1 was assessed. The strain PXL1 could grow well in arsenite concentration of 2.85-13.65. μM and efficiently oxidize Fe(II), reduce nitrate and remove As(III) from water. Scanning electron microscopy, X-ray diffraction spectroscopy, and Fourier transform infrared spectroscopy analysis showed that the strain PXL1 produced poorly crystalline Fe(III) oxides. As(III) was removed mainly by adsorption and co-precipitation of the biogenic Fe(III) oxides. The anaerobic nitrate-dependent Fe(II) oxidizing bacteria including C. freundii PXL1 are promising microbes for in situ remediation of nitrate and arsenite contaminated groundwater.",

keywords = "As(III) removal, Biogenic iron oxides, Ferrous iron oxidizing bacteria, Nitrate reduction",

author = "Baohua Li and Xiangliang Pan and Daoyong Zhang and Duu-Jong Lee and Al-Misned, \{Fahad A.\} and Mortuza, \{M. Golam\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2015",

month = apr,

day = "1",

doi = "10.1016/j.ecoleng.2015.01.027",

language = "English",

volume = "77",

pages = "196--201",

journal = "Ecological Engineering",

issn = "0925-8574",

publisher = "Elsevier B.V.",

}

Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater. / Li, Baohua; Pan, Xiangliang; Zhang, Daoyong et al.
In: Ecological Engineering, Vol. 77, 01.04.2015, p. 196-201.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater

AU - Li, Baohua

AU - Pan, Xiangliang

AU - Zhang, Daoyong

AU - Lee, Duu-Jong

AU - Al-Misned, Fahad A.

AU - Mortuza, M. Golam

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Nitrate and arsenic are common pollutants in groundwater. However, we are still lacking technologies that can remove nitrate and arsenic simultaneously using a single species of microorganism. In the present study, the potential of synchronous removal of nitrate and arsenite from water by a single anaerobic nitrate-reducing Fe(II) oxidizing Citrobacter freundii strain PXL1 was assessed. The strain PXL1 could grow well in arsenite concentration of 2.85-13.65. μM and efficiently oxidize Fe(II), reduce nitrate and remove As(III) from water. Scanning electron microscopy, X-ray diffraction spectroscopy, and Fourier transform infrared spectroscopy analysis showed that the strain PXL1 produced poorly crystalline Fe(III) oxides. As(III) was removed mainly by adsorption and co-precipitation of the biogenic Fe(III) oxides. The anaerobic nitrate-dependent Fe(II) oxidizing bacteria including C. freundii PXL1 are promising microbes for in situ remediation of nitrate and arsenite contaminated groundwater.

AB - Nitrate and arsenic are common pollutants in groundwater. However, we are still lacking technologies that can remove nitrate and arsenic simultaneously using a single species of microorganism. In the present study, the potential of synchronous removal of nitrate and arsenite from water by a single anaerobic nitrate-reducing Fe(II) oxidizing Citrobacter freundii strain PXL1 was assessed. The strain PXL1 could grow well in arsenite concentration of 2.85-13.65. μM and efficiently oxidize Fe(II), reduce nitrate and remove As(III) from water. Scanning electron microscopy, X-ray diffraction spectroscopy, and Fourier transform infrared spectroscopy analysis showed that the strain PXL1 produced poorly crystalline Fe(III) oxides. As(III) was removed mainly by adsorption and co-precipitation of the biogenic Fe(III) oxides. The anaerobic nitrate-dependent Fe(II) oxidizing bacteria including C. freundii PXL1 are promising microbes for in situ remediation of nitrate and arsenite contaminated groundwater.

KW - As(III) removal

KW - Biogenic iron oxides

KW - Ferrous iron oxidizing bacteria

KW - Nitrate reduction

UR - https://www.scopus.com/pages/publications/84921848959

UR - https://www.scopus.com/pages/publications/84921848959#tab=impact

U2 - 10.1016/j.ecoleng.2015.01.027

DO - 10.1016/j.ecoleng.2015.01.027

M3 - RGC 21 - Publication in refereed journal

SN - 0925-8574

VL - 77

SP - 196

EP - 201

JO - Ecological Engineering

JF - Ecological Engineering

ER -

Anaerobic nitrate reduction with oxidation of Fe(II) by Citrobacter Freundii strain PXL1 - a potential candidate for simultaneous removal of As and nitrate from groundwater

Abstract

Bibliographical note

UN SDGs

Research Keywords

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