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Integration of electrodialysis with bipolar membrane into technology of treatment of extra wastewater containing sodium sulfate
Authors: Kroupa Jan | Cakl Jiří | Kinčl Jan | Toman František
Year: 2015
Type of publication: článek v odborném periodiku
Name of source: Innovative remediation technologies - research and experience
Page from-to: 1-9
Titles:
Language Name Abstract Keywords
cze Začlenění elektrodialýzy s bipolární membránou do technologie zpracování nadbilančních odpadních vod obsahujících síran sodný Práce je zaměřena na analýzu možností využití produktů elektrodialýzy s bipolární membránou využité při zpracování odpadních vod obsahujících síran sodný. Zdrojem odpadní vody je přitom technologie zpracování uranové rudy. elektrodialýza; bipolární membrána; kyselina sírová; síran sodný; hydroxid sodný
eng Integration of electrodialysis with bipolar membrane into technology of treatment of extra wastewater containing sodium sulfate Sodium sulfate is a common waste material which can be produced in many chemical processes. Typical source of sodium sulfate wastewater is the process of beneficiation of uranium ore. At present, the sodium sulfate wastewater generated in this process is dominantly treated by combination of evaporation and crystallization eventually with integrated membrane processes such as electrodialysisand reverse osmosis. However electrodialysis with bipolar membrane is a modern alternative which is capable to improve the efficiency and environmental sustainability of the process. The process allows to recovery sodium hydroxide and sulfuric acid from corresponding waste salt. This work is focused on analyzing the possibility of reusing the products of electrodialysis with bipolar membrane back into the technology of benefication of uranium ore. It was found that the efficiency of the process is dependent on considered reuse location in the leaching technology with different requirements for their initial concentration and purity. Further research should be focused mainly on increasing the purity and maximum concentration produced sulfuric acid and sodium hydroxide. Electrodialysis; Bipolar membrane; Sulfuric acid; Sodium sulfate; Sodium hydroxide

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