Ex Situ Aqueous Mineral Carbonation

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• 作者：Stephen J. Gerdemann ; William K. O'Connor ; David C. Dahlin ; Larry R. Penner ; Hank Rush
• 刊名：Environmental Science & Technology
• 出版年：2007
• 出版时间：April 1, 2007
• 年：2007
• 卷：41
• 期：7
• 页码：2587 - 2593
• 全文大小：242K
• 年卷期：v.41,no.7(April 1, 2007)
• ISSN：1520-5851

文摘

The U.S. Department of Energy's National EnergyTechnology Laboratory (NETL) located in Albany, OR(formerly the Albany Research Center) has studied ex situmineral carbonation as a potential option for carbondioxide sequestration. Studies focused on the reaction ofCa-, Fe-, and Mg-silicate minerals with gaseous CO₂to form geologically stable, naturally occurring solid carbonateminerals. The research included resource evaluation,kinetic studies, process development, and economicevaluation. An initial cost estimate of ~$69/ton of CO₂sequestered was improved with process improvements to~$54/ton. The scale of ex situ mineral carbonationoperations, requiring ~55 000 tons of mineral to carbonate,the daily CO₂ emissions from a 1-GW, coal-fired powerplant, may make such operations impractical.