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Extraction of vanadium from ammonia slags with environmentally friendly wet processes near the atmospheric conditions

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Abstract

Aqueous solution based processes were examined to extract vanadium from the industrial wastes. In this work, the ammonia slag was focused as the target which is currently wasted in the ammonia producing process. The compositional analysis showed that the slag is composed of mainly Ca, Al, Si and other 13 elements. The content of vanadium is 4.2 mass% as V2O5. The separation of vanadium from the other cationic components was achieved by pH controlling techniques with several steps after extracting the soluble cations from the slag by acid treatment at 95 °C. The vanadium was collected at the final process as sodium vanadates with an approximate composition of Na1.2V3O8. The estimated yield of vanadium was 52 %.

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Acknowledgments

The authors thank Mr. A. Sasaki and Ms. S. Mizunuma in Yamagata University for their kindly help in the sample analysis.

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Yamagata University, Yonezawa-shi, Yamagata, 992-8510, Japan

    Hirotaka Takahashi & Yuta Matsushima

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  1. Hirotaka Takahashi
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  2. Yuta Matsushima
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Correspondence to Yuta Matsushima.

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Takahashi, H., Matsushima, Y. Extraction of vanadium from ammonia slags with environmentally friendly wet processes near the atmospheric conditions. Microsyst Technol 22, 73–76 (2016). https://doi.org/10.1007/s00542-015-2676-3

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  • DOI: https://doi.org/10.1007/s00542-015-2676-3

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