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  • Li_ENVPOL_As-Sb

    Rights statement: This is the author’s version of a work that was accepted for publication in Environmental Pollution. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental Pollution, 267, 2020 DOI: 10.1016/j.envpol.2020.115658

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Comparative removal of As(V) and Sb(V) from aqueous solution by sulfide-modified α-FeOOH

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Comparative removal of As(V) and Sb(V) from aqueous solution by sulfide-modified α-FeOOH. / Li, Q.; Li, R.; Ma, X.; Sarkar, B.; Sun, X.; Bolan, N.

In: Environmental Pollution, Vol. 267, 115658, 01.12.2020.

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Li, Q. ; Li, R. ; Ma, X. ; Sarkar, B. ; Sun, X. ; Bolan, N. / Comparative removal of As(V) and Sb(V) from aqueous solution by sulfide-modified α-FeOOH. In: Environmental Pollution. 2020 ; Vol. 267.

Bibtex

@article{4a652c426ed04d7c8c16b56048dc91a5,
title = "Comparative removal of As(V) and Sb(V) from aqueous solution by sulfide-modified α-FeOOH",
abstract = "Efficient elimination of As(V) and Sb(V) from wastewater streams has long been a major challenge. Herein, sulfide-modified α-FeOOH adsorbent was fabricated via a simple sulfidation reaction for removing As(V) and Sb(V) from aqueous media. Compared with the pristine α-FeOOH, sulfide-modified α-FeOOH increased the adsorption of As(V) from 153.8 to 384.6 mg/g, and Sb(V) adsorption from 277.8 to 1111.1 mg/g. The enhanced adsorption of both As(V) and Sb(V) was maintained at the pH range from 2 to 11, and was not interfered by various coexisting anions such as Cl−, SO42−, NO3−, SiO32− and PO43−. The adsorption affinity increased from 0.0047 to 0.0915 and 0.0053 to 0.4091 for As(V) and Sb(V), respectively. X-ray photoelectron spectroscopic investigation demonstrated a reductive conversion of As(V) to As(III) during the adsorption process with sulfide-modified α-FeOOH, but with no obvious variation of Sb(V) speciation. While the removal mechanism for As(V) was reduction followed by adsorption via hydroxyl groups, mainly surface complexation was involved in the removal of Sb(V). This study presented a simple strategy to enhance the adsorption capacity and adsorption affinity of α-FeOOH toward As(V)/Sb(V) via sulfide-modification. ",
keywords = "Adsorption affinity and capacity, Arsenic and antimony, Iron-based adsorbents, Metalloid speciation, Sulfide-modification, Wastewater treatment, Adsorption, Sulfur compounds, Adsorption affinity, Adsorption capacities, Enhanced adsorptions, Spectroscopic investigations, Sulfidation reactions, Surface complexation, Wastewater streams, X-ray photoelectrons, Antimony compounds",
author = "Q. Li and R. Li and X. Ma and B. Sarkar and X. Sun and N. Bolan",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Environmental Pollution. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental Pollution, 267, 2020 DOI: 10.1016/j.envpol.2020.115658",
year = "2020",
month = dec,
day = "1",
doi = "10.1016/j.envpol.2020.115658",
language = "English",
volume = "267",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Comparative removal of As(V) and Sb(V) from aqueous solution by sulfide-modified α-FeOOH

AU - Li, Q.

AU - Li, R.

AU - Ma, X.

AU - Sarkar, B.

AU - Sun, X.

AU - Bolan, N.

N1 - This is the author’s version of a work that was accepted for publication in Environmental Pollution. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental Pollution, 267, 2020 DOI: 10.1016/j.envpol.2020.115658

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Efficient elimination of As(V) and Sb(V) from wastewater streams has long been a major challenge. Herein, sulfide-modified α-FeOOH adsorbent was fabricated via a simple sulfidation reaction for removing As(V) and Sb(V) from aqueous media. Compared with the pristine α-FeOOH, sulfide-modified α-FeOOH increased the adsorption of As(V) from 153.8 to 384.6 mg/g, and Sb(V) adsorption from 277.8 to 1111.1 mg/g. The enhanced adsorption of both As(V) and Sb(V) was maintained at the pH range from 2 to 11, and was not interfered by various coexisting anions such as Cl−, SO42−, NO3−, SiO32− and PO43−. The adsorption affinity increased from 0.0047 to 0.0915 and 0.0053 to 0.4091 for As(V) and Sb(V), respectively. X-ray photoelectron spectroscopic investigation demonstrated a reductive conversion of As(V) to As(III) during the adsorption process with sulfide-modified α-FeOOH, but with no obvious variation of Sb(V) speciation. While the removal mechanism for As(V) was reduction followed by adsorption via hydroxyl groups, mainly surface complexation was involved in the removal of Sb(V). This study presented a simple strategy to enhance the adsorption capacity and adsorption affinity of α-FeOOH toward As(V)/Sb(V) via sulfide-modification.

AB - Efficient elimination of As(V) and Sb(V) from wastewater streams has long been a major challenge. Herein, sulfide-modified α-FeOOH adsorbent was fabricated via a simple sulfidation reaction for removing As(V) and Sb(V) from aqueous media. Compared with the pristine α-FeOOH, sulfide-modified α-FeOOH increased the adsorption of As(V) from 153.8 to 384.6 mg/g, and Sb(V) adsorption from 277.8 to 1111.1 mg/g. The enhanced adsorption of both As(V) and Sb(V) was maintained at the pH range from 2 to 11, and was not interfered by various coexisting anions such as Cl−, SO42−, NO3−, SiO32− and PO43−. The adsorption affinity increased from 0.0047 to 0.0915 and 0.0053 to 0.4091 for As(V) and Sb(V), respectively. X-ray photoelectron spectroscopic investigation demonstrated a reductive conversion of As(V) to As(III) during the adsorption process with sulfide-modified α-FeOOH, but with no obvious variation of Sb(V) speciation. While the removal mechanism for As(V) was reduction followed by adsorption via hydroxyl groups, mainly surface complexation was involved in the removal of Sb(V). This study presented a simple strategy to enhance the adsorption capacity and adsorption affinity of α-FeOOH toward As(V)/Sb(V) via sulfide-modification.

KW - Adsorption affinity and capacity

KW - Arsenic and antimony

KW - Iron-based adsorbents

KW - Metalloid speciation

KW - Sulfide-modification

KW - Wastewater treatment

KW - Adsorption

KW - Sulfur compounds

KW - Adsorption affinity

KW - Adsorption capacities

KW - Enhanced adsorptions

KW - Spectroscopic investigations

KW - Sulfidation reactions

KW - Surface complexation

KW - Wastewater streams

KW - X-ray photoelectrons

KW - Antimony compounds

U2 - 10.1016/j.envpol.2020.115658

DO - 10.1016/j.envpol.2020.115658

M3 - Journal article

VL - 267

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

M1 - 115658

ER -