Recycling of precipitation from vanadium redox flow battery through ion exchange

Wei Sheng Chen, Kai Chieh Yueh, Cheng Han Lee

Research output: Contribution to conferencePaperpeer-review

Abstract

The development of renewable energy is the trend of future. And finding an energy storage technology which is matching with it is very important. Among different types of batteries, Vanadium Redox Battery is the most suitable battery. However, during the charging and discharging processes of the vanadium battery, the precipitation of vanadium pentoxide may be caused by overcharge or temperature increase, which affects the battery performance. In this experiment, the material source mainly comes from the precipitation in the positive electrode. Firstly, the precipitation, vanadium pentoxide, was dissolved in the sulfuric acid solution. Next, the impurities were eliminated by adding ion-exchange resin. In this procedure, the parameter of pH value, the ratio between ion exchange resin and vanadium pentoxide and reaction time were be supplied. Moreover, the adsorption isotherms described by means of the Langmuir and Freundlich isotherms were used to investigate the ion-exchange behaviors of vanadium. After removing the impurities, precipitant was added to get vanadate. In the nutshell, this study will show the optimal conditions of ion-exchange to obtain high purity about 95% of vanadate.

Original languageEnglish
Publication statusPublished - 2020
Event15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019 - Pyeongchang, Gangwon-do, Korea, Republic of
Duration: 2019 Oct 132019 Oct 17

Conference

Conference15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019
Country/TerritoryKorea, Republic of
CityPyeongchang, Gangwon-do
Period19-10-1319-10-17

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

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