Considerable seawater bittern is produced during salt production. Seawater bittern can be used to reduce CO2 and SOx because of the presence of valuable mineral ions, such as K+ and Mg2+, which react with the carbonate and sulfate ions present in high concentrations. In this study, a novel seawater bittern recovery process is proposed for CO2 and SOx utilization. The proposed process has the following steps: (1) metal ion separation of the seawater bittern to produce KOH and Mg(OH)2; (2) SOx capture and utilization using the generated Mg(OH)2; (3) CO2 capture and utilization using the generated KOH. The pay-back period (PBP) was calculated to verify the economic feasibility of the proposed process. The results revealed an SOx and a CO2 capture efficiency of approximately 99 % and 98 %, respectively. Furthermore, the annual net revenue was approximately 153,439 USD/y based on the profit obtained from the generated product and savings on absorbent. Thus, the PBP was approximately 6.2 y.
|Publication status||Published - 2022 Oct 15|
Bibliographical noteFunding Information:
This work was supported by the Korean Institute of Industrial Technology within the framework of the following projects: “Development of Global Optimization System for Energy Process [grant number IR-22-0040 , IZ-22-0049 , UR-22-0031 ]”, “Development of complex parameter smart analysis modules for color customering [grant number EH-22-0011 ]” and “Development of AI Platform for Continuous Manufacturing of Chemical Process [grant number JH-22-0004 ]”.
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Materials Science(all)
- Water Science and Technology
- Mechanical Engineering