期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 25, 期 34, 页码 34114-34122出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-3369-0
关键词
Selective catalytic reduction catalyst; Solid waste; Arsenic; Regeneration; Titania; V2O5-WO3; TiO2
资金
- UCAS Joint PhD Training Program [UCAS[2015]37]
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 deNO(x) 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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