Mechanisms of degradation of MB by Fe2+/H2O2 system and the influencing factors

WANG Zhonghua; HE Mingqi; YANG Xue; ZHAO Haiqian; LIU Xiaoyan; LIU Yang

doi:10.11949/j.issn.0438-1157.20181107

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Mechanisms of degradation of MB by Fe²⁺/H₂O₂ system and the influencing factors

Energy and environmental engineering | 更新时间：2026-07-24

- Mechanisms of degradation of MB by Fe²⁺/H₂O₂ system and the influencing factors
- CIESC Journal Vol. 70, Issue 4, Pages: 1614-1619(2019)
- 作者机构：
  
  东北石油大学土木建筑工程学院，黑龙江大庆 163318
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181107
  CLC： X 506
- Received：29 September 2018，
  
  Revised：2018-12-19，
  
  Online First：15 June 2020，
  
  Published：12 April 2019
- 稿件说明：
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王忠华, 何明祺, 杨雪, 赵海谦, 刘晓燕, 刘扬. Fe²⁺/H₂O₂体系降解MB机制及影响因素研究[J]. 化工学报, 2019, 70(4): 1614-1619 DOI: 10.11949/j.issn.0438-1157.20181107.

WANG Zhonghua, HE Mingqi, YANG Xue, ZHAO Haiqian, LIU Xiaoyan, LIU Yang. Mechanisms of degradation of MB by Fe²⁺/H₂O₂ system and the influencing factors[J]. CIESC Journal, 2019, 70(4): 1614-1619 DOI: 10.11949/j.issn.0438-1157.20181107.
王忠华, 何明祺, 杨雪, 赵海谦, 刘晓燕, 刘扬. Fe²⁺/H₂O₂体系降解MB机制及影响因素研究[J]. 化工学报, 2019, 70(4): 1614-1619 DOI: 10.11949/j.issn.0438-1157.20181107. DOI：

WANG Zhonghua, HE Mingqi, YANG Xue, ZHAO Haiqian, LIU Xiaoyan, LIU Yang. Mechanisms of degradation of MB by Fe²⁺/H₂O₂ system and the influencing factors[J]. CIESC Journal, 2019, 70(4): 1614-1619 DOI: 10.11949/j.issn.0438-1157.20181107. DOI：

摘要

以亚甲基蓝（MB）作为目标污染物，实验研究了Fe

体系降解MB的活性物质，明确了主要反应条件对MB降解的影响特性。结果表明：HO

•没有直接降解MB的能力；Fe

体系对MB的降解能力主要来自于•OH；Fe

体系降解MB可分为快速反应阶段和匀速反应阶段。快速反应阶段的MB降解率随温度升高而下降。体系对MB降解能力随H

初始浓度增加呈现先升高后减弱的趋势，本实验条件下，最佳H

初始浓度为5 mmol·L

-1

。体系对MB降解能力随Fe

初始浓度的增加而单调增加。MB降解速率随MB初始浓度的增加而增加，但MB降解率随其初始浓度呈现先增大后减小的趋势。保证•OH生成速率及其有效利用是提高体系氧化能力及H

利用率的关键。

Abstract

Using methylene blue (MB) as the target pollutant

the active substances of MB degradation in Fe

system were studied experimentally. The influence characteristics of main reaction conditions on MB degradation were clarified. The results showed that HO

· had no ability to directly degrade MB and the capacity of the Fe

system for MB degradation mainly came from ·OH radicals. The degradation of MB by Fe

system can be divided into a rapid reaction stage and a uniform reaction stage. The MB degradation ratio in the rapid reaction phase decreased with the increase in temperature. The degradation ability of MB in the system increased first and then decreased with the increase of the initial concentration of H

. Under this experimental conditions

the optimal initial concentration of H

was 5 mmol·L

-1

. The degradation capacity of MB in the system increased monotonously with the inerease of Fe

initial conce

ntration. The degradation rate of MB increased with the increase of initial concentration of MB

but the degradation ratio of MB increased first and then decreased with it. Ensuring the rate of ·OH production and its effective utilization are key to improving the oxidizing ability of the system and the utilization of H

关键词

Keywords

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