Carbon Dioxide → Magnesium bicarbonate

Participants

Reaction Steps

Magnesium oxide is hydrated for 1.5 hours at 85° C. The weight ratio of water to magnesium oxide is 2:1. Then water is added into the mixture to prepare slurry at a weight ratio of water to magnesium oxide of 30:1. After that, carbon dioxide (85 vt %) is introduced into the slurry to react. for 3.5 hours at 18° C. Subsequently, a pure magnesium bicarbonate solution (MgO: 29.2 g/L, Fe: 1.5 ppm, Al: 0.3 ppm) is obtained after clarification and filtration.

Provenance & Evidence