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Effective industrial regeneration of arsenic poisoning waste selective catalytic reduction catalyst: contaminants removal and activity recovery

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Abstract

In this work, an environmental friendly industrial regeneration approach has been proposed to remove the surface poisoning and recover the catalytic activity of waste V2O5-WO3/TiO2 catalyst. Alkaline treatment and acid wash are combined for the waste catalyst regeneration process, which is applied for the arsenic and alkali metal removal, respectively. The crystal structure was well maintained as anatase phase and the surface area was increased during the regeneration, which is favorable for the following active component addition step and regenerated process. The XPS results illustrated that the surface contaminants (arsenic and sodium) were removed and V(IV) was loaded on the regenerated catalyst. Based on the deNOx evaluations, the catalytic activity of the regenerated sample is increased to the level of commercial fresh catalyst. The present industrial regeneration process provides a promising method for the comprehensive recovery of waste catalyst and further understanding in the field of secondary resource recycle.

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Funding

The financial support of the UCAS (UCAS[2015]37) Joint PhD Training Program is greatly acknowledged.

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Authors and Affiliations

  1. Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA

    Yudong Xue

  2. School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China

    Yunting Wang

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  1. Yudong Xue
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  2. Yunting Wang
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Correspondence to Yudong Xue or Yunting Wang.

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Responsible editor: Suresh Pillai

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Xue, Y., Wang, Y. Effective industrial regeneration of arsenic poisoning waste selective catalytic reduction catalyst: contaminants removal and activity recovery. Environ Sci Pollut Res 25, 34114–34122 (2018). https://doi.org/10.1007/s11356-018-3369-0

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  • DOI: https://doi.org/10.1007/s11356-018-3369-0

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