Steel Manufacturing EAF Dust as a Potential Adsorbent for Hydrogen Sulfide Removal

Christian Frilund; Minna Kotilainen; José Barros Lorenzo; Pertti Lintunen; Kimmo Kaunisto

doi:10.1021/acs.energyfuels.1c04235

Steel Manufacturing EAF Dust as a Potential Adsorbent for Hydrogen Sulfide Removal

Christian Frilund (Corresponding Author), Minna Kotilainen, José Barros Lorenzo, Pertti Lintunen, Kimmo Kaunisto

BA5504 Sustainable material design

Arcelor-Mittal Global R&D

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

3 Citations (Scopus)

Abstract

Electric arc furnace dust (EAFD) is a high-volume steel manufacturing byproduct with currently limited value-added applications. EAFD contains metal oxides that can react with H₂S to form stable sulfides. Hence, the valorization potential of EAFD as an adsorbent material for syngas H₂S removal was investigated. EAFD from European steel plants was characterized and tested in dynamic H₂S breakthrough tests and benchmarked against a commercial ZnO-based adsorbent. For this, the EAFD was first processed into adsorbents by simple milling and granulation steps. The EAFD samples exhibited sulfur capture capacities at 400 °C and an SV of 17,000 h^-1that correlated with the sample milling times and Zn concentrations. It was verified that only zinc participated in sulfur capture. Yet, both ZnO and the zinc in ZnFe₂O₄were found to be active in sulfidation. At higher temperatures (500 and 600 °C), EAFD sample performance drastically improved and even exceeded the reference zinc oxide performance. The high-zinc (48% by mass) EAFD-B sample exhibited the highest tested performance at 500 °C, with a sulfur capture capacity of 234 mg g^-1. The results indicate that sufficiently high-zinc-content EAFD could serve as a viable sulfur capture material.

Original language	English
Pages (from-to)	3695-3703
Journal	Energy & Fuels
Volume	36
Issue number	7
DOIs	https://doi.org/10.1021/acs.energyfuels.1c04235
Publication status	Published - 7 Apr 2022
MoE publication type	A1 Journal article-refereed

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title = "Steel Manufacturing EAF Dust as a Potential Adsorbent for Hydrogen Sulfide Removal",

abstract = "Electric arc furnace dust (EAFD) is a high-volume steel manufacturing byproduct with currently limited value-added applications. EAFD contains metal oxides that can react with H2S to form stable sulfides. Hence, the valorization potential of EAFD as an adsorbent material for syngas H2S removal was investigated. EAFD from European steel plants was characterized and tested in dynamic H2S breakthrough tests and benchmarked against a commercial ZnO-based adsorbent. For this, the EAFD was first processed into adsorbents by simple milling and granulation steps. The EAFD samples exhibited sulfur capture capacities at 400 °C and an SV of 17,000 h-1that correlated with the sample milling times and Zn concentrations. It was verified that only zinc participated in sulfur capture. Yet, both ZnO and the zinc in ZnFe2O4were found to be active in sulfidation. At higher temperatures (500 and 600 °C), EAFD sample performance drastically improved and even exceeded the reference zinc oxide performance. The high-zinc (48% by mass) EAFD-B sample exhibited the highest tested performance at 500 °C, with a sulfur capture capacity of 234 mg g-1. The results indicate that sufficiently high-zinc-content EAFD could serve as a viable sulfur capture material.",

author = "Christian Frilund and Minna Kotilainen and {Barros Lorenzo}, Jos{\'e} and Pertti Lintunen and Kimmo Kaunisto",

note = "Funding Information: This work was carried out as part of the DESULF project, which received funding from the European Institute of Innovation and Technology (EIT), a body of the European Union, Horizon2020 Program under grant number 19123. ",

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AU - Kotilainen, Minna

AU - Barros Lorenzo, José

AU - Lintunen, Pertti

AU - Kaunisto, Kimmo

N1 - Funding Information: This work was carried out as part of the DESULF project, which received funding from the European Institute of Innovation and Technology (EIT), a body of the European Union, Horizon2020 Program under grant number 19123.

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Y1 - 2022/4/7

N2 - Electric arc furnace dust (EAFD) is a high-volume steel manufacturing byproduct with currently limited value-added applications. EAFD contains metal oxides that can react with H2S to form stable sulfides. Hence, the valorization potential of EAFD as an adsorbent material for syngas H2S removal was investigated. EAFD from European steel plants was characterized and tested in dynamic H2S breakthrough tests and benchmarked against a commercial ZnO-based adsorbent. For this, the EAFD was first processed into adsorbents by simple milling and granulation steps. The EAFD samples exhibited sulfur capture capacities at 400 °C and an SV of 17,000 h-1that correlated with the sample milling times and Zn concentrations. It was verified that only zinc participated in sulfur capture. Yet, both ZnO and the zinc in ZnFe2O4were found to be active in sulfidation. At higher temperatures (500 and 600 °C), EAFD sample performance drastically improved and even exceeded the reference zinc oxide performance. The high-zinc (48% by mass) EAFD-B sample exhibited the highest tested performance at 500 °C, with a sulfur capture capacity of 234 mg g-1. The results indicate that sufficiently high-zinc-content EAFD could serve as a viable sulfur capture material.

AB - Electric arc furnace dust (EAFD) is a high-volume steel manufacturing byproduct with currently limited value-added applications. EAFD contains metal oxides that can react with H2S to form stable sulfides. Hence, the valorization potential of EAFD as an adsorbent material for syngas H2S removal was investigated. EAFD from European steel plants was characterized and tested in dynamic H2S breakthrough tests and benchmarked against a commercial ZnO-based adsorbent. For this, the EAFD was first processed into adsorbents by simple milling and granulation steps. The EAFD samples exhibited sulfur capture capacities at 400 °C and an SV of 17,000 h-1that correlated with the sample milling times and Zn concentrations. It was verified that only zinc participated in sulfur capture. Yet, both ZnO and the zinc in ZnFe2O4were found to be active in sulfidation. At higher temperatures (500 and 600 °C), EAFD sample performance drastically improved and even exceeded the reference zinc oxide performance. The high-zinc (48% by mass) EAFD-B sample exhibited the highest tested performance at 500 °C, with a sulfur capture capacity of 234 mg g-1. The results indicate that sufficiently high-zinc-content EAFD could serve as a viable sulfur capture material.

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Steel Manufacturing EAF Dust as a Potential Adsorbent for Hydrogen Sulfide Removal

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