Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater

Liming Yang; Genping Yi; Bo Wang; Penghui Shao; Yufa Feng; Yanbiao Liu; Kai Yu; Fuqiang Liu; Lingling Liu; Xubiao Luo; Shenglian Luo

doi:10.1016/j.resconrec.2021.106020

Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater

Liming Yang, Genping Yi, Bo Wang, Penghui Shao, Yufa Feng, Yanbiao Liu, Kai Yu, Fuqiang Liu, Lingling Liu, Xubiao Luo^*, Shenglian Luo

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

16 Citations (Scopus)

Abstract

Simultaneous recovery and value-added conversion of hazardous heavy metal ions from complex wastewater sources is of great significance yet challenging. Herein, we demonstrate that highly toxic antimonite Sb(III) could be effectively recovered from antimony (Sb) mine flotation wastewater and converted into high-value-added metallic Sb using a novel facile atomic H* enhanced electrochemical reduction avenue coupled with thermal reduction by H₂ gas. The high production of atomic H* generated from the electrochemical cathode with an optimum reduction potential of –1.2 V vs. Ag/AgCl, which is lower than the Sb(III) reduction potential of –1.0 V, might be attributable to the superior Sb recovery capabilities. Furthermore, the metallic Sb concentration at –1.2 V was 14.43 times greater than at –1.0 V due to the strong reductivity of atomic H*. In addition, Sb(III) removal efficiency was found to be as high as 98.52%, with a metallic Sb recovery rate of up to 1.67 mg min^–1. The efficiency of Sb(III) recovery was demonstrated throughout a wide pH range, with metallic Sb being the main product, independent of the presence of multiple coexisting ions. Economic analysis also indicated that treating Sb mine flotation wastewater per ton may yield a net profit of $40.09. This research contributes to the advancement of an atomic H* enhanced electrochemical technology for high-valued heavy metal recovery from complex heavy metal-polluted wastewater.

Original language	English
Article number	106020
Journal	Resources, Conservation & Recycling
Volume	178
Number of pages	10
ISSN	0921-3449
DOIs	https://doi.org/10.1016/j.resconrec.2021.106020
Publication status	Published - Mar 2022
Externally published	Yes

Keywords

Antimony
Atomic H*
Flotation wastewater
High-value-added metallic Sb recovery

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10.1016/j.resconrec.2021.106020

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@article{0deb31be128c404dae654530eaef7c1f,

title = "Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater",

abstract = "Simultaneous recovery and value-added conversion of hazardous heavy metal ions from complex wastewater sources is of great significance yet challenging. Herein, we demonstrate that highly toxic antimonite Sb(III) could be effectively recovered from antimony (Sb) mine flotation wastewater and converted into high-value-added metallic Sb using a novel facile atomic H* enhanced electrochemical reduction avenue coupled with thermal reduction by H2 gas. The high production of atomic H* generated from the electrochemical cathode with an optimum reduction potential of –1.2 V vs. Ag/AgCl, which is lower than the Sb(III) reduction potential of –1.0 V, might be attributable to the superior Sb recovery capabilities. Furthermore, the metallic Sb concentration at –1.2 V was 14.43 times greater than at –1.0 V due to the strong reductivity of atomic H*. In addition, Sb(III) removal efficiency was found to be as high as 98.52%, with a metallic Sb recovery rate of up to 1.67 mg min–1. The efficiency of Sb(III) recovery was demonstrated throughout a wide pH range, with metallic Sb being the main product, independent of the presence of multiple coexisting ions. Economic analysis also indicated that treating Sb mine flotation wastewater per ton may yield a net profit of $40.09. This research contributes to the advancement of an atomic H* enhanced electrochemical technology for high-valued heavy metal recovery from complex heavy metal-polluted wastewater.",

keywords = "Antimony, Atomic H*, Flotation wastewater, High-value-added metallic Sb recovery",

author = "Liming Yang and Genping Yi and Bo Wang and Penghui Shao and Yufa Feng and Yanbiao Liu and Kai Yu and Fuqiang Liu and Lingling Liu and Xubiao Luo and Shenglian Luo",

note = "Funding Information: This study was financially supported by the National Science Foundation of China (No. 52060018 ), the National Science Fund for Distinguished Young Scholars (No. 52125002), the National Key Research and Development Program of China (No. 2019YFC1907900 ), the Key Project of Research and Development Plan of Jiangxi Province (No. 20201BBE51007 ), and the Fostering Project of National Science and Technology Awards of Jiangxi Province (No. 20192AEI91001 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = mar,

doi = "10.1016/j.resconrec.2021.106020",

language = "English",

volume = "178",

journal = "Resources, Conservation & Recycling",

issn = "0921-3449",

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}

Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater. / Yang, Liming; Yi, Genping; Wang, Bo et al.
In: Resources, Conservation & Recycling, Vol. 178, 106020, 03.2022.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater

AU - Yang, Liming

AU - Yi, Genping

AU - Wang, Bo

AU - Shao, Penghui

AU - Feng, Yufa

AU - Liu, Yanbiao

AU - Yu, Kai

AU - Liu, Fuqiang

AU - Liu, Lingling

AU - Luo, Xubiao

AU - Luo, Shenglian

N1 - Funding Information: This study was financially supported by the National Science Foundation of China (No. 52060018 ), the National Science Fund for Distinguished Young Scholars (No. 52125002), the National Key Research and Development Program of China (No. 2019YFC1907900 ), the Key Project of Research and Development Plan of Jiangxi Province (No. 20201BBE51007 ), and the Fostering Project of National Science and Technology Awards of Jiangxi Province (No. 20192AEI91001 ). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/3

Y1 - 2022/3

N2 - Simultaneous recovery and value-added conversion of hazardous heavy metal ions from complex wastewater sources is of great significance yet challenging. Herein, we demonstrate that highly toxic antimonite Sb(III) could be effectively recovered from antimony (Sb) mine flotation wastewater and converted into high-value-added metallic Sb using a novel facile atomic H* enhanced electrochemical reduction avenue coupled with thermal reduction by H2 gas. The high production of atomic H* generated from the electrochemical cathode with an optimum reduction potential of –1.2 V vs. Ag/AgCl, which is lower than the Sb(III) reduction potential of –1.0 V, might be attributable to the superior Sb recovery capabilities. Furthermore, the metallic Sb concentration at –1.2 V was 14.43 times greater than at –1.0 V due to the strong reductivity of atomic H*. In addition, Sb(III) removal efficiency was found to be as high as 98.52%, with a metallic Sb recovery rate of up to 1.67 mg min–1. The efficiency of Sb(III) recovery was demonstrated throughout a wide pH range, with metallic Sb being the main product, independent of the presence of multiple coexisting ions. Economic analysis also indicated that treating Sb mine flotation wastewater per ton may yield a net profit of $40.09. This research contributes to the advancement of an atomic H* enhanced electrochemical technology for high-valued heavy metal recovery from complex heavy metal-polluted wastewater.

AB - Simultaneous recovery and value-added conversion of hazardous heavy metal ions from complex wastewater sources is of great significance yet challenging. Herein, we demonstrate that highly toxic antimonite Sb(III) could be effectively recovered from antimony (Sb) mine flotation wastewater and converted into high-value-added metallic Sb using a novel facile atomic H* enhanced electrochemical reduction avenue coupled with thermal reduction by H2 gas. The high production of atomic H* generated from the electrochemical cathode with an optimum reduction potential of –1.2 V vs. Ag/AgCl, which is lower than the Sb(III) reduction potential of –1.0 V, might be attributable to the superior Sb recovery capabilities. Furthermore, the metallic Sb concentration at –1.2 V was 14.43 times greater than at –1.0 V due to the strong reductivity of atomic H*. In addition, Sb(III) removal efficiency was found to be as high as 98.52%, with a metallic Sb recovery rate of up to 1.67 mg min–1. The efficiency of Sb(III) recovery was demonstrated throughout a wide pH range, with metallic Sb being the main product, independent of the presence of multiple coexisting ions. Economic analysis also indicated that treating Sb mine flotation wastewater per ton may yield a net profit of $40.09. This research contributes to the advancement of an atomic H* enhanced electrochemical technology for high-valued heavy metal recovery from complex heavy metal-polluted wastewater.

KW - Antimony

KW - Atomic H

KW - Flotation wastewater

KW - High-value-added metallic Sb recovery

UR - http://www.scopus.com/inward/record.url?scp=85118553464&partnerID=8YFLogxK

U2 - 10.1016/j.resconrec.2021.106020

DO - 10.1016/j.resconrec.2021.106020

M3 - Journal article

AN - SCOPUS:85118553464

SN - 0921-3449

VL - 178

JO - Resources, Conservation & Recycling

JF - Resources, Conservation & Recycling

M1 - 106020

ER -

Atomic H* enhanced electrochemical recovery towards high-value-added metallic Sb from complex mine flotation wastewater

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Keywords

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