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Study on the recovery of alkali from beryllium-containing alkali solution by bipolar membrane electrodialysis

Authors： ZHANG Yufeng1, GUO Qing2, ZENG Juan1, YU Kanping1, LEI Xiang1, LIU Meng1

Units： 1. Changsha Research Institute of Mining &Metallurgy Co.,Ltd.,Changsha, 410012, China; 2. China Minmetals Beryllium Co., Ltd., Changsha 410030, China

KeyWords： beryllium; alkali solution；bipolar membrane electrodialysis；alkali recovery

ClassificationCode：TQ028； X703

year,volume(issue):pagination： 2026,46(1):120-128

Abstract：

Beryllium-containing alkali solution is production wastewater generated during the extraction method for producing industrial beryllium hydroxide, which contains high concentrations of valuable components such as sodium hydroxide and beryllium elements. In order to recycle alkali and beryllium, bipolar membrane electrodialysis was used to treat beryllium-containing alkali solution, and a self-prepared adsorbent for beryllium was used to recover beryllium from the solution containing beryllium and aluminum after treatment. In this paper, the running time, alkali concentration and concentration ratio of bipolar membrane electrodialysis treatment process was investigated. The results showed that when the alkali concentration of beryllium-containing alkali solution was 0.7 mol/L and concentration ratio was 2∶1, the recovered alkali concentration could reach 49.22 g/L, and alkali recovery rate reached 92.42%.

Funds：

国家重点研发计划（2021YFC2902302）

AuthorIntro：

张玉凤（1990-），女，湖南株洲人，工程师，主要从事废水处理及回用技术研究

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