期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 54, 期 16, 页码 2749-2757出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2018.1553982
关键词
Seawater; magnesium sulfate; alkaline industrial waste; sulfuric acid; organic solvent
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2013R1A1A2012279]
In this study, we used three processes to synthesize magnesium sulfate from seawater. First, alkaline industrial wastes, cement kiln dust and paper sludge ash, were injected to the seawater to precipitate magnesium in the form of magnesium hydroxide (Mg(OH)(2)). Then, magnesium was eluted with a small amount of H2SO4 to make a high concentration magnesium solution. Finally, an organic solvent was added to precipitate magnesium sulfate (MgSO4). Over 90% of magnesium was recovered through the three processes. It is expected that 11.3 kg of magnesium sulfate (based on MgSO4 center dot 6H(2)O) can be synthesized from 1 ton of seawater.
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