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Inducing hour-level humification of Enteromorpha prolifera to fabricate fulvic-like acid fertilizer with Fenton’s reagent

Author

Listed:
  • Dongqing Cai

    (Donghua University
    Donghua University)

  • Yezhen Lu

    (Donghua University
    Donghua University)

  • Yanping Zhu

    (Donghua University
    Donghua University)

  • Dongfang Wang

    (Donghua University
    Donghua University)

  • Jiping Shi

    (Chinese Academy of Sciences)

  • Li Liu

    (Chinese Academy of Sciences)

  • Jianyong Li

    (Shanghai Agricultural Technology Extension Service Center)

  • Xiuping Zhan

    (Shanghai Agricultural Technology Extension Service Center)

  • Weijian Zhang

    (Shanghai Agricultural Development Promotion Center)

  • He Xu

    (Donghua University
    Donghua University)

Abstract

The phenomenon of Enteromorpha prolifera (EP) flooding caused by marine eutrophication has resulted in serious environmental impact. Here, we demonstrate an application of Fenton’s reagent in the rapid recovery and utilization of EP. The humification of EP with water content of 80–90% is accelerated by adding H2O2 and FeSO4·7H2O. A notable self-heating phenomenon (from 22 to 86 °C) is observed within 10 min, and the sample is dried to obtain the EP fertilizer (EPF) after 60 min, which contained 25.5 ± 4.3% (wt%) of fulvic-like acid (FLA). Aromatization, amidation and carboxylation reactions induced by free radicals (mainly •OH) play a key role in EP (mainly polysaccharides and proteins) humification through degradation-polymerization pathway. A scale-up experiment is also carried out to confirm the feasibility of this technology. EPF increases the fresh weight of chickweeds (pot experiment) and cabbage (field plot experiment) by 27.1% and 609.7% compared with blank, respectively. This study opens a promising avenue for application of Fenton reaction in biowaste humification, which is beneficial for efficient EP recycling and agriculture sustainable development.

Suggested Citation

  • Dongqing Cai & Yezhen Lu & Yanping Zhu & Dongfang Wang & Jiping Shi & Li Liu & Jianyong Li & Xiuping Zhan & Weijian Zhang & He Xu, 2025. "Inducing hour-level humification of Enteromorpha prolifera to fabricate fulvic-like acid fertilizer with Fenton’s reagent," Nature Communications, Nature, vol. 16(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-61204-3
    DOI: 10.1038/s41467-025-61204-3
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    1. Yanping Zhu & Yuxuan Cao & Bingbing Fu & Chengjin Wang & Shihu Shu & Pengjin Zhu & Dongfang Wang & He Xu & Naiqin Zhong & Dongqing Cai, 2024. "Waste milk humification product can be used as a slow release nano-fertilizer," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
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