用芬顿试剂诱导浒苔进行小时级腐殖化以制备类黄腐酸肥料。
Inducing hour-level humification of Enteromorpha prolifera to fabricate fulvic-like acid fertilizer with Fenton's reagent.
作者信息
Cai Dongqing, Lu Yezhen, Zhu Yanping, Wang Dongfang, Shi Jiping, Liu Li, Li Jianyong, Zhan Xiuping, Zhang Weijian, Xu He
机构信息
College of Environmental Science and Engineering, Donghua University, Shanghai, People's Republic of China.
State Key Laboratory of Advanced Fiber Materials, College of Environmental Science and Engineering, Donghua University, Shanghai, China.
出版信息
Nat Commun. 2025 Jul 1;16(1):5860. doi: 10.1038/s41467-025-61204-3.
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 HO and FeSO·7HO. 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.
由海洋富营养化导致的浒苔泛滥现象已造成严重的环境影响。在此，我们展示了芬顿试剂在浒苔快速回收利用中的应用。通过添加H₂O₂和FeSO₄·7H₂O可加速含水量为80 - 90%的浒苔腐殖化。在10分钟内观察到显著的自热现象（从22℃升至86℃），60分钟后样品干燥得到浒苔肥料（EPF），其含有25.5±4.3%（重量）的类富里酸（FLA）。自由基（主要是•OH）引发的芳构化、酰胺化和羧基化反应通过降解 - 聚合途径在浒苔（主要是多糖和蛋白质）腐殖化过程中起关键作用。还进行了放大实验以证实该技术的可行性。与空白相比，浒苔肥料使繁缕（盆栽实验）和甘蓝（田间小区实验）的鲜重分别增加了27.1%和609.7%。本研究为芬顿反应在生物废弃物腐殖化中的应用开辟了一条有前景的途径，这有利于浒苔的高效回收利用和农业可持续发展。
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