浙江农业科学 ›› 2026, Vol. 67 ›› Issue (2): 488-494.DOI: 10.16178/j.issn.0528-9017.20250216

• 资源与环境 • 上一篇    下一篇

再力花生物质炭对水体氮、磷的吸附性能

姜皓然1(), 黄越2, 李帅1, 尉吉乾2, 应珊珊1()   

  1. 1.浙江农林大学 环境与资源学院,浙江 杭州 311300
    2.杭州市农业技术推广中心,浙江 杭州 310020
  • 收稿日期:2025-03-20 出版日期:2026-02-28 发布日期:2026-03-07
  • 通讯作者: 应珊珊
  • 作者简介:应珊珊,E-mail:ssying@zafu.edu.cn
    姜皓然,从事农业废弃物的研究工作。E-mail:2023603041009@stu.zafu.edu.cn
  • 基金资助:
    国家自然科学基金(42277045)

Study on the adsorption performance of Thalia dealbata Fraser biochar for nitrogen and phosphorus in water bodies

JIANG Haoran1(), HUANG Yue2, LI Shuai1, YU Jiqian2, YING Shanshan1()   

  1. 1.College of Environment and Resources,Zhejiang A&F University,Hangzhou 311300,Zhejiang
    2.Hangzhou Agricultural Technology Extension Center,Hangzhou 310020,Zhejiang
  • Received:2025-03-20 Online:2026-02-28 Published:2026-03-07
  • Contact: YING Shanshan

摘要:

如何处理废弃水生植物是生态沟渠最终实现农业面源污染过程拦截作用的关键问题,生物质炭化是目前秸秆型废弃物资源化普遍采用的措施。本研究选择生态沟渠中普遍种植的再力花作为炭化材料,探讨不同炭化温度(400、500、600 ℃)与盐酸改性方法下制备生物质炭的吸附特性。材料性质表征表明,提高炭化温度与盐酸改性均显著有利于生物质炭孔隙形成,400 ℃炭化并经盐酸改性的再力花生物质炭对$\mathrm{NO}_3^{-}$-N和$\mathrm{PO}_4^{3-}$的吸附效果最佳,600 ℃炭化并经盐酸改性后生物质炭对$\mathrm{NH}_4^{+}$-N吸附效果最佳。再力花制备生物质炭具备水质净化能力,其中盐酸改性相较于提高炭化温度,对增强生物质炭吸附能力效果更佳,为后续生态沟渠水生植物资源化利用提供技术支持。

关键词: 再力花, 生物质炭, 氮, 磷, 吸附性能

Abstract:

The treatment of discarded aquatic plants is crucial for enabling ecological ditches to effectively intercept agricultural non-point source pollution. Biomass carbonization is a widely adopted method for the resource utilization of straw-type waste. This study selected Thalia dealbata Fraser,a common plant in ecological ditches,as the carbonization material to investigate the adsorption characteristics of biochar prepared under different carbonization temperatures(400,500,600 ℃)and hydrochloric acid modification methods. Material characterization revealed that both increasing carbonization temperature and hydrochloric acid modification significantly promoted pore formation in the biochar. The biochar carbonized at 400 ℃ and modified with hydrochloric acid demonstrated the best adsorption performance for $\mathrm{NO}_3^{-}$-N and $\mathrm{PO}_4^{3-}$,while the biochar carbonized at 600 ℃ and modified with hydrochloric acid showed the highest adsorption capacity for $\mathrm{NH}_4^{+}$-N. The biochar derived from Thalia dealbata Fraser exhibits water purification potential,with hydrochloric acid modification proving more effective than increasing carbonization temperature in enhancing adsorption capacity. This study provides technical support for the subsequent resource utilization of aquatic plants in ecological ditches.

Key words: Thalia dealbata Fraser, biochar, nitrogen, phosphorus, adsorption performance

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