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A New Method for Capturing CO 2 from Effluent Gases Using a Rice-Based Product

Author

Listed:
  • Ameera F. Mohammad

    (College of Engineering, UAE University, Al Ain 15551, United Arab Emirates
    Chemical Engineering Department, KU Leuven, B-3001 Leuven, Belgium)

  • Abeer F. Dar Saleh

    (College of Engineering, UAE University, Al Ain 15551, United Arab Emirates)

  • Maatouk Khoukhi

    (College of Engineering, UAE University, Al Ain 15551, United Arab Emirates)

  • Ali H. Al-Marzouqi

    (College of Engineering, UAE University, Al Ain 15551, United Arab Emirates)

Abstract

In 2013, UAE imported around 772 million kilograms of rice, making it one of the largest consumers of this popular grain in the world. However, 40% of rice available in the market is discarded, contributing to the country’s CO 2 footprint. Given that CO 2 emissions are recognized as a significant contributor to climate change and efforts aimed at their reduction are proving insufficient for combatting the global increase in temperature, various approaches aimed at its removal from the atmosphere have been proposed. The goal of this study is to contribute to this initiative by proposing a new method for CO 2 removal based on a special gas contact device filled with buffered puffed rice cakes obtained by heating in a purposely designed sealed chamber at high pressure to obtain layers with 9−12 mm thickness. The resulting cakes are subsequently immersed in a sodium hydroxide liquor (0.25−2.5 M) to increase the moisture content to 5% and pH to >11.0. In the experiments, different rice structures (stacked layers, rice grains, and multi-spaced layers) were tested, varying the CO 2 percentage in the simulated effluent gas (1−15%). The highest CO 2 uptake value (7.52 × 10 −3 mole CO 2 /cm 2 rice cake surface area) was achieved using 10% CO 2 and a 500 mL/min flow rate with rice cakes of 80 mm diameter, comprising 12 mm thick layers that occupied 20% of the device volume. These results indicate that the proposed design exhibits high CO 2 removal efficiency and should be further optimized in future investigations.

Suggested Citation

  • Ameera F. Mohammad & Abeer F. Dar Saleh & Maatouk Khoukhi & Ali H. Al-Marzouqi, 2022. "A New Method for Capturing CO 2 from Effluent Gases Using a Rice-Based Product," Energies, MDPI, vol. 15(6), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:2287-:d:776005
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    References listed on IDEAS

    as
    1. Maatouk Khoukhi & Abeer Dar Saleh & Ahmed Hassan & Shaimaa Abdelbaqi, 2021. "Thermal Characterization of a New Bio-Based Insulation Material Containing Puffed Rice," Energies, MDPI, vol. 14(18), pages 1-12, September.
    2. Holtz-Eakin, Douglas & Selden, Thomas M., 1995. "Stoking the fires? CO2 emissions and economic growth," Journal of Public Economics, Elsevier, vol. 57(1), pages 85-101, May.
    3. Kunze, Christian & Spliethoff, Hartmut, 2012. "Assessment of oxy-fuel, pre- and post-combustion-based carbon capture for future IGCC plants," Applied Energy, Elsevier, vol. 94(C), pages 109-116.
    4. Aya A-H. I. Mourad & Ameera F. Mohammad & Ali H. Al-Marzouqi & Muftah H. El-Naas & Mohamed H. Al-Marzouqi & Mohammednoor Altarawneh, 2021. "KOH-Based Modified Solvay Process for Removing Na Ions from High Salinity Reject Brine at High Temperatures," Sustainability, MDPI, vol. 13(18), pages 1-18, September.
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