β-FeOOH改性蒙脱土复合过氧化氢对罗丹明B的降解

doi:10.19964/j.issn.1006-4990.2021-0469

Abstract

Abstract:

Montmorillonite was modified with different amounts of β-FeOOH to prepare a series of β-FeOOH-MMT（x），which were also linked with H₂O₂ to degrade the rhodamine B（RhB）.The influence factors of RhB simulated wastewater deccolization were investigated and the synergistic effect of different treatment methods was investigated，and the experimental results showed that when pH=5.2，β-FeOOH-MMT（3.5） dosage of 2 g/L，n（H₂O₂）∶n（Fe）=50∶1，stir for 10 min，the 20 mg/L RhB removal rate could be as high as 89.3%.Raman spectroscopy and SEM were characterized for β-FeOOH-MMT（x）.β-FeOOH-MMT（3.5） showed rich pore structure.β-FeOOH-MMT（3.5） and H₂O₂ had synergistic effect on degradation of RhB simulated wastewater.The degradation reaction was closer to the apparent first?order kinetics，and the rate enhancement factor could reach 29.32.

Key words: montmorillonoid, β-FeOOH, rhodamine B, Fenton?like method

CLC Number:

TQ138.1

CHEN Xiudong,ZHANG Yihuan,ZHANG Haodong,SHENG Donghe,WU Jiawei,LIU Jinhang,YAN Ping,ZHAN Changchao. Degradation of rhodamine B by β-FeOOH modified montmorillonite compounded with H₂O₂[J]. Inorganic Chemicals Industry, 2022, 54(5): 116-120.

Figures/Tables 11

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反应体系	k/min^-1	相关系数
H₂O₂	0.001 89	0.845 68
β-FeOOH-MMT（3.5）	0.001 55	0.862 71
β-FeOOH-MMT（3.5）-H₂O₂	0.100 87	0.836 51

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Degradation of rhodamine B by β-FeOOH modified montmorillonite compounded with H₂O₂

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Degradation of rhodamine B by β-FeOOH modified montmorillonite compounded with H2O2