Carbon Capture and Mineralization in Singapore: Preliminary Environmental Impacts and Costs via LCA

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• 作者：Hsien H. Khoo ; Paul N. Sharratt ; Jie Bu ; Tze Y. Yeo ; Armando Borgna ; James G. Highfield ; Thomas G. Bjo虉rklo虉f ; Ron Zevenhoven
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：October 5, 2011
• 年：2011
• 卷：50
• 期：19
• 页码：11350-11357
• 全文大小：1025K
• 年卷期：v.50,no.19(October 5, 2011)
• ISSN：1520-5045

文摘

The total energy and CO₂ emissions of a mineral carbonation process are investigated using a life cycle assessment (LCA). The LCA investigation takes into account the energy and greenhouse gas emissions from mineral mining operations and shipment from Australia, the recovery of CO₂ based on amine scrubbing technology (if required), and two possible options for mineral carbonation in Singapore where the final carbonate products have potential use in the construction industry and as land reclamation material. Four scenarios were investigated 鈥?the first two with CO₂ recovery via amine scrubbing prior to mineralization and the last two with direct mineralization of CO₂ from the NGCC flue gas. The most promising options turned out to be scenarios 3 and 4 鈥?these cases result in 215 and 154 kg of CO₂ avoided per 1 MWh, respectively. Scenario 1 results in 90 kg of CO₂ avoided per 1 MWh. The life cycle costing results are 70.6鈥?0.8 USD/tonne CO₂ avoided for scenario 3 and 119.9鈥?59.1 USD/tonne CO₂ avoided for scenario 4.