Mineral carbonation of a desulfurization residue for CO2 sequestration

摘要: The feasibility of mineral carbonation a desulfurization residue for sequestering CO2 was evaluated both through theoretical and experimental approaches. reaction, including Ca(OH)2 CaSO4, occurred kinetically controlled stage with an activation energy 20.21 kJ mol−1. concentration ammonia, flow rate, liquid to solid ratio temperature impacted on the their direct definite influence rate constant. Concentration ammonia were most important factors influencing in terms reaction rate. Under optimized conditions could reach approximately 98% when using industry-grade CO2. crystalline phases carbonated calcite vaterite spherical granular morphology. CO2/O2/N2 mixed gas also used as simulated fuel it had relatively minor effect ratio. However, slowed produced product smaller average particle size, which included high purity (≥99%) white calcite. reported herein showed rapid sequestration ratio, amount, low cost, large potential situ electricity steel industry.