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2014 | 16 | 1 | 59-62

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Removal of vanadium, potassium and iron from spent vanadium catalyst by leaching with citric acid at atmospheric pressure


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The effect of time, temperature, the catalyst particle size and the ratio of the catalyst weight to the leaching solution volume (S:L) on the treatment of spent vanadium catalyst components was determined using citric acid solutions at atmospheric pressure. The optimal parameters of catalyst leaching in 10% acid solutions at atmospheric pressure are: T = 323 K, t = 4 h, the particle size of less than 0.160 mm, the S:L ratio below 0.1. Under these conditions it was possible to dissolve about 90% of vanadium and potassium compounds and more than 60% of iron compounds contained in the catalyst. These results fall within the scope of research on a comprehensive method for recovering spent vanadium catalyst components.









Physical description


1 - 03 - 2014
25 - 03 - 2014


  • Nicolaus Copernicus University, Faculty of Chemistry, Department of Chemical Technology, ul. Gagarina 7, 87-100 Toruń, Poland


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