Carbon capture and mineralization in singapore: Preliminary environmental impacts and costs via LCA

Hsien H. Khoo*, Paul N. Sharratt, Jie Bu, Tze Y. Yeo, Armando Borgna, James G. Highfield, Thomas G. Björklöf, Ron Zevenhoven

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    27 Citations (Scopus)

    Abstract

    The total energy and CO 2 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 CO 2 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-the first two withCO 2 recovery via amine scrubbing prior to mineralization and the last two with direct mineralization of CO 2 from the NGCC flue gas. The most promising options turned out to be scenarios 3 and 4 - these cases result in 215 and 154 kg of CO 2 avoided per 1 MWh, respectively. Scenario 1 results in 90 kg of CO 2 avoided per 1 MWh. The life cycle costing results are 70.6-80.8 USD/tonne CO 2 avoided for scenario 3 and 119.9-159.1 USD/tonne CO 2 avoided for scenario 4.

    Original languageEnglish
    Pages (from-to)11350-11357
    Number of pages8
    JournalIndustrial and Engineering Chemistry Research
    Volume50
    Issue number19
    DOIs
    Publication statusPublished - 5 Oct 2011
    MoE publication typeA1 Journal article-refereed

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