University of Oulu

Zheng, H., Li, Q., Ling, Y., Omran, M., Gao, L., & Chen, G. (2021). Optimisation on the microwave drying of ammonium polyvanadate (APV)- based on a kinetic study. Journal of Materials Research and Technology, 13, 1056–1067.

Optimisation on the microwave drying of ammonium polyvanadate (APV) : based on a kinetic study

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Author: Zheng, Hewen1,2; Li, Qiannan1,2; Ling, Yeqing1,2;
Organizations: 1Kunming Key Laboratory of Energy Materials Chemistry, Key Laboratory of Green-Chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming, 650500, PR China
2Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, 650500, PR China
3Faculty of Technology, University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
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Language: English
Published: Elsevier, 2021
Publish Date: 2021-06-15


Vanadium pentoxide (V₂O₅) is one of the fundamental materials applied in the productions of batteries, vanadium-aluminium alloys, biomedicine, catalysis, etc. High purity V₂O₅ can be prepared from an intermediate product, namely ammonium polyvanadate (APV), using roasting after a drying process. In this paper, microwave heating was used as an alternative drying option for APV, which has advantages including selective heating, high heating efficiency, energy-saving, and environmental protection. The authors investigated the microwave heating characteristics of APV and discussed the effects of microwave power, the mass of APV, and initial water content on the efficiency of microwave drying. The dynamic analysis of the APV microwave drying process was also carried out. Four groups of thin-layer drying dynamic models, namely Modified-Page model, Verma model, Sickmplified-Fick’s-diffusion model, and Two-term-exponential model, were fitted with the experimental data. Through comparison, the Modified Page model could better describe the microwave drying process of APV.

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Series: Journal of materials research and technology
ISSN: 2238-7854
ISSN-E: 2214-0697
ISSN-L: 2238-7854
Volume: 13
Pages: 1056 - 1067
DOI: 10.1016/j.jmrt.2021.05.056
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: Financial supports from the National Natural Science Foundation of China (No: U1802255, 51404114 and 51504110), the National Key R&D Program of China (2018YFC1900500), the Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (No. 2015BAB17B00), and Innovative Research Team (in Science and Technology) in University of Yunnan Province were sincerely acknowledged.
Copyright information: © 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (