2009•Journal of Wuhan Institute of TechnologyRequires access
Study on synthesis process of calcium formate by dialysis
Fen Zhao
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Abstract
Calcium formate was recovered from sodium and formate by calcium hydroxide ion-exchange membrane dialysis with three campartments to provided reference for a green technology of calcium formate synthesis.It made HCOO-and OH-through the anion exchange membrane under differential concentrations while Ca2+ and HCOO-binding to form calcium formate.The influence of initial concentration of sodium formate and using period of membrane on ion exchange ratio of on was investigated.The results showed that HCOO-content was the highest in products when concentration of sodium formate is 15 g/L.The membrane efficiency decreased as the increase of using period of anion-exchange membrane under the same condition.The highest content of Ca2+ and HCOO-of the first experiment is 1.68 times and 2.13 times of the fourth,respectively.