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Synthesis, Characterization and Mechanism Study of Green Aragonite Crystals from Waste Biomaterials as Calcium Supplement

Author

Listed:
  • Lulit Habte

    (Resources Recycling Department, University of Science and Technology (UST), 217, Gajeong-ro, Yuseong-gu, Daejeon-34113, Korea
    Center for Carbon Mineralization, Mineral Resources Research Division, Korea Institute of Geosciences and Mineral Resources (KIGAM), 124 Gwahak-ro, Yuseong-gu, Daejeon-34132, Korea
    These authors contributed equally to this study and are co-first authors.)

  • Mohd Danish Khan

    (Resources Recycling Department, University of Science and Technology (UST), 217, Gajeong-ro, Yuseong-gu, Daejeon-34113, Korea
    Center for Carbon Mineralization, Mineral Resources Research Division, Korea Institute of Geosciences and Mineral Resources (KIGAM), 124 Gwahak-ro, Yuseong-gu, Daejeon-34132, Korea
    These authors contributed equally to this study and are co-first authors.)

  • Natnael Shiferaw

    (Korea Research Institute on Climate Change, 11, Subyeongongwon-gil, Chuncheon-si 24239, Korea)

  • Adeeba Farooq

    (Mechanical Engineering Department, ABES Institute of Technology, Campus 2, NH 24, Ghaziabad-201009, India)

  • Mee-hye Lee

    (Department of Earth and Environmental Sciences, Korea University, Seoul-02841, Korea)

  • Seok-ho Jung

    (Department of Earth and Environmental Sciences, Korea University, Seoul-02841, Korea)

  • Ji Whan Ahn

    (Center for Carbon Mineralization, Mineral Resources Research Division, Korea Institute of Geosciences and Mineral Resources (KIGAM), 124 Gwahak-ro, Yuseong-gu, Daejeon-34132, Korea)

Abstract

In present work, environmentally benign green aragonite crystals were synthesized from waste chicken eggshells and bivalve seashells through a simple and low-cost wet carbonation method. This method involves a constant stirring of calcium oxide slurry and magnesium chloride suspension in aqueous solution with constraint carbon dioxide injection at 80 °C. The physicochemical properties of the synthesized aragonite were further compared with the aragonite synthesized from commercial calcium oxide. The morphological analysis, such as acicular shape and optimum aspect ratio (~21), were confirmed by scanning electron microscopy. The average crystal size (10–30 µm) and specific surface area (2–18 m 2 g −1 ) were determined by particle size and Brunauer–Emmett–Teller analysis, respectively. Moreover, a schematic crystal growth mechanism was proposed to demonstrate the genesis and progression of aragonite crystal. Green aragonite can bridge the void for numerous applications and holds the potential for the commercial-scale synthesis with eggshells and bivalve seashells as low-cost precursors.

Suggested Citation

  • Lulit Habte & Mohd Danish Khan & Natnael Shiferaw & Adeeba Farooq & Mee-hye Lee & Seok-ho Jung & Ji Whan Ahn, 2020. "Synthesis, Characterization and Mechanism Study of Green Aragonite Crystals from Waste Biomaterials as Calcium Supplement," Sustainability, MDPI, vol. 12(12), pages 1-10, June.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:12:p:5062-:d:374558
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    References listed on IDEAS

    as
    1. Lulit Habte & Natnael Shiferaw & Dure Mulatu & Thriveni Thenepalli & Ramakrishna Chilakala & Ji Whan Ahn, 2019. "Synthesis of Nano-Calcium Oxide from Waste Eggshell by Sol-Gel Method," Sustainability, MDPI, vol. 11(11), pages 1-10, June.
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