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Enhanced Nitrate Nitrogen Removal from Wastewater Using Modified Reed Straw: Adsorption Performance and Resource Utilization

Author

Listed:
  • Haodong Zhang

    (Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China)

  • Zhan Yang

    (Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China)

  • Jiawang Tian

    (Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China)

  • Changyi Liu

    (Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China)

  • Zhe Qin

    (Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China
    Engineering Research Center of Ecological Safety and Conservation in Beijing-Tianjin-Hebei, Xiong’an New Area of MOE, Xiongxian 071800, China)

Abstract

This paper presents a study on the efficient removal of nitrate nitrogen from wastewater using modified reed straw (MRS) and its subsequent resource utilization. The modification of the reed straw involved the introduction of branching quaternary amine groups to enhance its adsorption capacity for nitrate nitrogen. Experimental investigations were conducted to analyze the impact of packing height, flow rate, and initial solution concentration on the dynamic adsorption performance of the MRS. The results revealed that the maximum dynamic adsorption capacity of the MRS for nitrate nitrogen reached 14.76 mg/g. Furthermore, valuable nitrate nitrogen nutrient solution was successfully recovered through subsequent desorption experiments for resource recycling. Moreover, the application of the MRS led to notable enhancements in column height, fresh weight, chlorophyll content, and nitrogen content of the treated plants, indicating its efficacy in promoting plant growth. Overall, the findings demonstrate that MRS serves as a versatile adsorbent capable of efficient nitrate nitrogen removal and subsequent resource utilization.

Suggested Citation

  • Haodong Zhang & Zhan Yang & Jiawang Tian & Changyi Liu & Zhe Qin, 2024. "Enhanced Nitrate Nitrogen Removal from Wastewater Using Modified Reed Straw: Adsorption Performance and Resource Utilization," Sustainability, MDPI, vol. 16(10), pages 1-18, May.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:10:p:4001-:d:1391998
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    References listed on IDEAS

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    1. Rong Song & Shengke Yang & Haiyang Xu & Zongzhou Wang & Yangyang Chen & Yanhua Wang, 2018. "Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues," IJERPH, MDPI, vol. 15(1), pages 1-12, January.
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