A heterogeneous fenton-like catalytic degradation method of benzalkonium bromide assisted by bubbles

Abstract

The application discloses a bubble-assisted benzalkonium chloride heterogeneous Fenton-like catalytic degradation method and belongs to the technical field of water treatment in environmental engineering. The method uses ferric nitrate, cobalt chloride, lanthanum nitrate and biochar as raw materials, synthesizes BC / LaFeCo-LDH through a hydrothermal method, uses the BC / LaFeCo-LDH as a heterogeneous Fenton-like catalyst, and is used for activating peroxymonosulfate. Meanwhile, a solid-liquid-gas heterogeneous Fenton-like catalytic system is constructed in combination with a hydrodynamic cavitation reactor. In the system, the exposure degree of benzalkonium chloride is increased by virtue of the bidirectional action of hydrophobic bubbles and the surface of hydrophilic catalysts, the activation rate of peroxymonosulfate is significantly improved, a large amount of singlet oxygen is generated, and the degradation efficiency and reaction rate of benzalkonium chloride are effectively improved. The method provides an effective way for green and efficient degradation of benzalkonium chloride.

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