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Municipal Solid Waste Incineration (MSWI) Fly Ash as a Potential Adsorbent for Phosphate Removal

Author

Listed:
  • Onchanok Juntarasakul

    (Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand)

  • Pongthon Roongcharoen

    (Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand)

  • Carlito Baltazar Tabelin

    (Department of Materials and Resources Engineering and Technology, College of Engineering, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Philippines
    Resource Processing and Technology Center, Research Institute for Engineering and Innovative Technology (RIEIT), Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Philippines)

  • Theerayut Phengsaart

    (Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
    Applied Mineral and Petrology Research Unit (AMP RU), Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand)

Abstract

Phosphorus, in the form of phosphate, is an essential nutrient used in agriculture, but in excess, it becomes harmful to the environment by promoting the eutrophication of aquatic ecosystems, leading to oxygen depletion and phytoplankton overgrowth. This study aims to repurpose municipal solid waste incineration (MSWI) fly ash for phosphate removal by adsorption and develop sustainable, cost-effective MSWI fly ash-based mitigation strategies for phosphorus pollution. Batch experiments were conducted to examine the effects of contact time, phosphate concentration, MSWI fly ash dosage, and pH on phosphate removal efficiency. The results indicate that the phosphate removal efficiency significantly improved with a longer contact time, pH of 2, increased MSWI fly ash dosage, and higher initial phosphate concentrations. These findings highlight the potential of repurposing MSWI fly ash as an economical and sustainable adsorbent to mitigate the impacts of phosphate pollution on aquatic ecosystems, a strategy that promotes not only waste reduction and the circular economy but also environmental protection and conservation.

Suggested Citation

  • Onchanok Juntarasakul & Pongthon Roongcharoen & Carlito Baltazar Tabelin & Theerayut Phengsaart, 2024. "Municipal Solid Waste Incineration (MSWI) Fly Ash as a Potential Adsorbent for Phosphate Removal," Sustainability, MDPI, vol. 16(20), pages 1-12, October.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:20:p:8869-:d:1497794
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    References listed on IDEAS

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    1. Shangjie Ge-Zhang & Taoyang Cai & Zhitao Hu & Haotong Zhu & Pingxuan Mu & Jingang Cui, 2023. "Investigation and Suggestions regarding Residents’ Understanding of Waste Classification in Chinese Prefecture-Level Cities—A Case Study of Maanshan City, Anhui Province, China," Sustainability, MDPI, vol. 15(14), pages 1-8, July.
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