Phosphogypsum Two-Step Ammonia-Carbonation Resulting in Ammonium
We describe herein a detailed study on the effect of molar ratio MR = n(OH−)/n(Ca2+) on the Phosphogypsum (PG) waste ammonia-carbonation process. The use of an aqueous NH3 solution/gaseous CO2 mixture as an alternative and environmental medium compared with other mediums [(NH4)2CO3 for example] is proposed for CO2 capture and PG …