The impact of reagents concentration on the efficiency of obtaining high-purity magnesium hydroxide / Piotr Radomski, Andrzej Jarosiński, Zbigniew Wzorek, Anna K. Nowak // Polish Journal of Chemical Technology ... więcej

The impact of reagents concentration on the efficiency of obtaining high-purity magnesium hydroxide / Piotr Radomski, Andrzej Jarosiński, Zbigniew Wzorek, Anna K. Nowak // Polish Journal of Chemical Technology [Dokument elektroniczny]. – 2020, Vol. 22, Iss. 2, s. 73-77 : fot., schem., tab., wykr. – Tryb dostępu: https://content.sciendo.com/view/journals/pjct/22/2/article-p73.xml?language=en. – Bibliogr. 15 poz., Streszcz. ang. – doi: 10.2478/pjct-2020-0019. – ISSN 1899-4741

The work presents the impact of reagents concentration and the drying process on the effi ciency of obtaining magnesium hydroxide and its specifi c surface area. Magnesium sulphate(VI) within the concentration ... więcej

The work presents the impact of reagents concentration and the drying process on the effi ciency of obtaining magnesium hydroxide and its specifi c surface area. Magnesium sulphate(VI) within the concentration range of 0.7–2.0 mol/dm3 was used in the research as magnesium feedstock and sodium hydroxide was used as a precipitating agent within the same concentration range. The process of obtaining magnesium hydroxide was carried out with a 25% excess of the precipitating agent in relation to the reaction stoichiometry. The obtained suspension was separated by way of multi-stage sedimentation with the use of acetone and freezing samples. Depending on the concentration of reagents the effi ciency of obtaining magnesium hydroxide fell within the range of 88–99%, whereas the specifi c surface area – within 115–609 m2/g, while the high purity of samples above 99% of magnesium hydroxide was maintained.