Volume 40, Issue 12 pp. 2322-2328
Research Article

Enhanced CO2 Capture Performance of Limestone by Industrial Waste Sludge

Ying-chao Hu

Ying-chao Hu

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

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Wen-qiang Liu

Corresponding Author

Wen-qiang Liu

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

Correspondence: Wen-qiang Liu ([email protected]), Ming-hou Xu ([email protected]) Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China.Search for more papers by this author
Yuan-dong Yang

Yuan-dong Yang

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

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Jian Sun

Jian Sun

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

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Zi-jian Zhou

Zi-jian Zhou

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

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Ming-hou Xu

Corresponding Author

Ming-hou Xu

Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China

Correspondence: Wen-qiang Liu ([email protected]), Ming-hou Xu ([email protected]) Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, 1037 Luoyu Road, 430074 Wuhan, China.Search for more papers by this author
First published: 04 August 2017
Citations: 16

Abstract

Although inert supports have been proved effective to enhance CO2 capture performance of CaO sorbents, more commonly used supports are derived from expensive raw materials such as nitrates and organometallic precursors. Cheap waste sludge from the steel plant was utilized, which has a high daily output and has not received effective reuse, to promote the CO2 capture performance. The results showed that the sludge effectively promoted the performance of limestone. Homogeneously dispersed inert material of MgO, acting as the metal framework to resist sintering, was responsible for the enhanced performance. The introduction of waste sludge into the calcium looping could not only improve the sorbent performance, but also provide a potentially effective way to reuse the waste sludge.

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