Production of Sodium Bicarbonate with Saline Brine and CO2 Co-Utilization: Comparing Modified Solvay Approaches

The present work investigates the production of sodium bicarbonate in combination with co-utilization saline brine and carbon capture, utilization, sequestration (CCUS). use ammonia traditional Solvay process could be eliminated by using a modified process. This study compared modification addition three buffering additives: Ca(OH)2, KOH, NH4HCO3. effectiveness these processes, two qualities (desalination aquifer), is based on purity produced NaHCO3. It was found that Ca(OH)2 did not produce high-purity NaHCO3, while NH4HCO3 KOH performed better. Desalination utilization resulted second most suitable method involved main co-product formed Na2CO3. Geochemical modeling order to have insights into carbonation (in reactor) precipitation oven) behavior reactions. predicted mineral phases well, though kinetics might hinder some saturated solids dissolve first. shows accurate characterization critical accurately assess success processes. QXRD SEM analyses, complemented geochemical modeling, helped better understand processes formation Further investigations diverse brines provide for their geological water desalination industries them.