BC@Fe3S4 Biochar Catalyst
Pesticide to fertilizer
In situ converts pesticide residues into plant-available ammonium via heterogeneous Fenton-like process, simultaneously detoxifying soil and providing nitrogen nutrient.
Dong, He · Wen, Yujiao · ShangZhi, Wei · Li, Shikai · Lide, Liu · Jinmeng, Wu · Zhou, Zhi · Zhou, Nan · Liu, Hongmei · Zhou, Zhonghua
Biochar 2025
Specifications
- NH₄⁺-N concentration
- {'zh': '3.029', 'en': '3.029'} mg L⁻¹
- Lettuce dry weight (treated)
- {'zh': '29.3', 'en': '29.3'} mg/plant
- Lettuce dry weight (untreated control)
- {'zh': '17.3', 'en': '17.3'} mg/plant
Advantages
Simultaneous detoxification and fertilization
CTD degradation and NH₄⁺-N formation occur simultaneously, and the product directly supplies nitrogen to plants, reducing the need for additional fertilizer.
Reduced toxicity
T.E.S.T-QSAR simulation indicated decreased toxicity of degradation intermediates to Fathead minnow and T. pyriformis.
Excellent catalytic activity
The one-step hydrothermally synthesized BC@Fe₃S₄ efficiently activates PMS to generate reactive species (•OH, ¹O₂, SO₄•⁻) driving the reaction.
No residue
No CTD residue was detected after treatment in contaminated soil, indicating complete removal.
Applications
- pesticide-contaminated soil remediation：In situ degrade pesticides such as clothianidin and convert them into nitrogen fertilizer, restoring soil while improving fertility.
- advanced oxidation water treatment：Use BC@Fe₃S₄ to activate PMS generating radicals for efficient oxidation of pesticide pollutants in water.
- environmental functional materials：BC@Fe₃S₄ combines biochar support with iron-sulfur active sites to activate PMS for environmental remediation.
- persulfate activators：BC@Fe₃S₄ serves as an efficient PMS activator, generating •OH, ¹O₂ and SO₄•⁻ to degrade organic pollutants.
- enhanced nitrogen fertilizer：Convert pesticide residues into NH₄⁺-N, providing directly absorbable nitrogen nutrient for crops.