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Title: Thermal behavior of Cu-Mg-Al-Ba/Sr bifunctional composites during chemical looping combustion and HCl adsorption of MSW syngas
Authors: Liu, Guicai
Wu, Xinyi
Zhao, Ya
Veksha, Andrei
Giannis, Apostolos
Lim, Teik-Thye
Lisak, Grzegorz
Keywords: Engineering::Environmental engineering
Issue Date: 2022
Source: Liu, G., Wu, X., Zhao, Y., Veksha, A., Giannis, A., Lim, T. & Lisak, G. (2022). Thermal behavior of Cu-Mg-Al-Ba/Sr bifunctional composites during chemical looping combustion and HCl adsorption of MSW syngas. Chemical Engineering Journal, 430, 132871-.
Project: WTE CRP 1701105 
Journal: Chemical Engineering Journal 
Abstract: Mg-Al-supported composites of CuO Oxygen carrier (OC) and Ba/Sr sorbent synthesized by mechanical mixing were used for three-stage process of MSW syngas chemical looping Combustion and HCl adsorption (CLCA). The syngas combustion and HCl adsorption efficiencies as well as thermal behavior of the composites were investigated. It was found that the composites exhibited great reactivity and stability during cyclic CLCA process. The Ba/Sr sorbent slightly influenced the redox ability of OC owing to the presence of Cu2MgO3, but exhibited no impact on the MSW syngas combustion, achieving nearly full combustion during 20 cycles. Regarding to the conditions for sorbent regeneration, higher H2O content and temperature facilitated sorbent regeneration, allowing better HCl adsorption at fuel reaction stage. The sorbent regeneration conditions were optimized at 60 vol% H2O and 900 °C. Ba-loading composite exhibited better HCl adsorption performance than the Sr-loading during 20 CLCA cycles maintaining 25–35 ppmv HCl in flue gas because of its better regeneration efficiency (∼95%). The CuO/Cu migration to the surface enhanced the stability on mechanical strength, elemental composition and redox ability without appearing significant agglomeration during 20 cycles, maintaining the stability in the reactivity with MSW syngas for long-term operation.
ISSN: 1385-8947
DOI: 10.1016/j.cej.2021.132871
Rights: © 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles

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