Enrichment of iron from bauxite waste in chemical looping combustion

Neng Huang; Xin Gao; Ayokunle Omosebi; Dimitrios Koumoulis; Kunlei Liu

doi:10.1002/aic.17961

Enrichment of iron from bauxite waste in chemical looping combustion

Neng Huang, Xin Gao, Ayokunle Omosebi, Dimitrios Koumoulis, Kunlei Liu

Research output: Contribution to journal › Article › peer-review

Abstract

This work reports a method and findings related to the enrichment of iron from bauxite waste (red mud) using chemical looping combustion (CLC). According to the results from X-ray Diffraction, X-ray Fluorescence, and scanning electron microscope–energy-dispersive X-ray spectroscopy, uniformly distributed iron in the red mud particles migrated outward to the surface during the 148 redox cycles in a bubbling fluidized bed reactor, in which the size-reduced iron-oxide particles due to attrition are concentrated in filters. The concentrations of iron oxide in raw particles and attrition fines are 43 wt.% and 83–87 wt.%, respectively. Since the attrition in CLC is inevitable, this recycled iron oxide can be a valuable by-product to compensate for the cost of CLC, whereas the bed materials continue to participate in the CLC process. Moreover, the abundant bauxite waste can be processed in an eco-friendly manner for integrated power generation, carbon capture, and iron recovery by the proposed strategy in this work.

Original language	English
Article number	e17961
Journal	AICHE Journal
Volume	69
Issue number	2
DOIs	https://doi.org/10.1002/aic.17961
State	Published - Feb 2023

Bibliographical note

Funding Information:
We thank Dr. Tristana Duvallet for the particle size analyses, Mr. Roger Perrone, Mr. Steve Summers, and Mr. John Adams for their maintenance of the FBR and Dr. Dali Qian, Dr. Feng Zhu, and Dr. Xiaoshuai Yuan for their valuable suggestions about material characterizations, and Ms. Lisa Richburg, Mr. Yuxuan Zhang, and Mr. Emmanuel Ohiomoba for proofreading. Neng Huang thanks the China Scholarship Council (CSC) for the financial support of Ph.D. study. This research also received internal support from the University of Kentucky.

Funding Information:
China Scholarship Council, Grant/Award Number: 201906420091; University of Kentucky Funding information

Publisher Copyright:
© 2022 American Institute of Chemical Engineers.

Keywords

attrition
bauxite waste
chemical looping combustion
iron enrichment
oxygen carrier

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
Chemical Engineering (all)

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10.1002/aic.17961

Cite this

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title = "Enrichment of iron from bauxite waste in chemical looping combustion",

abstract = "This work reports a method and findings related to the enrichment of iron from bauxite waste (red mud) using chemical looping combustion (CLC). According to the results from X-ray Diffraction, X-ray Fluorescence, and scanning electron microscope–energy-dispersive X-ray spectroscopy, uniformly distributed iron in the red mud particles migrated outward to the surface during the 148 redox cycles in a bubbling fluidized bed reactor, in which the size-reduced iron-oxide particles due to attrition are concentrated in filters. The concentrations of iron oxide in raw particles and attrition fines are 43 wt.% and 83–87 wt.%, respectively. Since the attrition in CLC is inevitable, this recycled iron oxide can be a valuable by-product to compensate for the cost of CLC, whereas the bed materials continue to participate in the CLC process. Moreover, the abundant bauxite waste can be processed in an eco-friendly manner for integrated power generation, carbon capture, and iron recovery by the proposed strategy in this work.",

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author = "Neng Huang and Xin Gao and Ayokunle Omosebi and Dimitrios Koumoulis and Kunlei Liu",

note = "Funding Information: We thank Dr. Tristana Duvallet for the particle size analyses, Mr. Roger Perrone, Mr. Steve Summers, and Mr. John Adams for their maintenance of the FBR and Dr. Dali Qian, Dr. Feng Zhu, and Dr. Xiaoshuai Yuan for their valuable suggestions about material characterizations, and Ms. Lisa Richburg, Mr. Yuxuan Zhang, and Mr. Emmanuel Ohiomoba for proofreading. Neng Huang thanks the China Scholarship Council (CSC) for the financial support of Ph.D. study. This research also received internal support from the University of Kentucky. Funding Information: China Scholarship Council, Grant/Award Number: 201906420091; University of Kentucky Funding information Publisher Copyright: {\textcopyright} 2022 American Institute of Chemical Engineers.",

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AU - Omosebi, Ayokunle

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AU - Liu, Kunlei

N1 - Funding Information: We thank Dr. Tristana Duvallet for the particle size analyses, Mr. Roger Perrone, Mr. Steve Summers, and Mr. John Adams for their maintenance of the FBR and Dr. Dali Qian, Dr. Feng Zhu, and Dr. Xiaoshuai Yuan for their valuable suggestions about material characterizations, and Ms. Lisa Richburg, Mr. Yuxuan Zhang, and Mr. Emmanuel Ohiomoba for proofreading. Neng Huang thanks the China Scholarship Council (CSC) for the financial support of Ph.D. study. This research also received internal support from the University of Kentucky. Funding Information: China Scholarship Council, Grant/Award Number: 201906420091; University of Kentucky Funding information Publisher Copyright: © 2022 American Institute of Chemical Engineers.

PY - 2023/2

Y1 - 2023/2

N2 - This work reports a method and findings related to the enrichment of iron from bauxite waste (red mud) using chemical looping combustion (CLC). According to the results from X-ray Diffraction, X-ray Fluorescence, and scanning electron microscope–energy-dispersive X-ray spectroscopy, uniformly distributed iron in the red mud particles migrated outward to the surface during the 148 redox cycles in a bubbling fluidized bed reactor, in which the size-reduced iron-oxide particles due to attrition are concentrated in filters. The concentrations of iron oxide in raw particles and attrition fines are 43 wt.% and 83–87 wt.%, respectively. Since the attrition in CLC is inevitable, this recycled iron oxide can be a valuable by-product to compensate for the cost of CLC, whereas the bed materials continue to participate in the CLC process. Moreover, the abundant bauxite waste can be processed in an eco-friendly manner for integrated power generation, carbon capture, and iron recovery by the proposed strategy in this work.

AB - This work reports a method and findings related to the enrichment of iron from bauxite waste (red mud) using chemical looping combustion (CLC). According to the results from X-ray Diffraction, X-ray Fluorescence, and scanning electron microscope–energy-dispersive X-ray spectroscopy, uniformly distributed iron in the red mud particles migrated outward to the surface during the 148 redox cycles in a bubbling fluidized bed reactor, in which the size-reduced iron-oxide particles due to attrition are concentrated in filters. The concentrations of iron oxide in raw particles and attrition fines are 43 wt.% and 83–87 wt.%, respectively. Since the attrition in CLC is inevitable, this recycled iron oxide can be a valuable by-product to compensate for the cost of CLC, whereas the bed materials continue to participate in the CLC process. Moreover, the abundant bauxite waste can be processed in an eco-friendly manner for integrated power generation, carbon capture, and iron recovery by the proposed strategy in this work.

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KW - oxygen carrier

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Enrichment of iron from bauxite waste in chemical looping combustion

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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