含碳铁泥基催化剂活化H2O2处理亚甲基蓝废水
TQ426%X703.5; 利用铁泥基催化剂构建类Fenton体系可实现污水厂废弃铁泥的资源化利用.热解温度可调控催化剂表面金属和非金属位点组成,影响其对过氧化氢(H2O2)的活化效果.对不同热解温度(400～700℃)下制备的催化剂进行形貌、组成、结构和活性等方面的测试.研究发现,700℃下制备的催化剂活化H2O2,在 100 min内对亚甲基蓝(MB)降解率达92.0%.当热解温度在400～700℃范围内增大时,催化剂比表面积和C含量均增大.机理探究表明,催化剂表面的Fe0、C== C/C—C和C== O活性位点对活化H2O2发挥重要作用,有利于促进亚甲基蓝降解.此外,铁泥基催化剂/H2O...
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| Published in | 工业水处理 Vol. 44; no. 2; pp. 125 - 132 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
天津大学环境科学与工程学院,天津 300350
01.02.2024
中环保水务投资有限公司,北京 100082%天津大学环境科学与工程学院,天津 300350%天津商业大学机械工程学院,天津 300134 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1005-829X |
| DOI | 10.19965/j.cnki.iwt.2023-0044 |
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| Abstract | TQ426%X703.5; 利用铁泥基催化剂构建类Fenton体系可实现污水厂废弃铁泥的资源化利用.热解温度可调控催化剂表面金属和非金属位点组成,影响其对过氧化氢(H2O2)的活化效果.对不同热解温度(400～700℃)下制备的催化剂进行形貌、组成、结构和活性等方面的测试.研究发现,700℃下制备的催化剂活化H2O2,在 100 min内对亚甲基蓝(MB)降解率达92.0%.当热解温度在400～700℃范围内增大时,催化剂比表面积和C含量均增大.机理探究表明,催化剂表面的Fe0、C== C/C—C和C== O活性位点对活化H2O2发挥重要作用,有利于促进亚甲基蓝降解.此外,铁泥基催化剂/H2O2体系中羟基自由基(·OH)和单线态氧(1O2)是主要活性物种,超氧自由基(O2·-)发挥作用较小. |
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| AbstractList | TQ426%X703.5; 利用铁泥基催化剂构建类Fenton体系可实现污水厂废弃铁泥的资源化利用.热解温度可调控催化剂表面金属和非金属位点组成,影响其对过氧化氢(H2O2)的活化效果.对不同热解温度(400～700℃)下制备的催化剂进行形貌、组成、结构和活性等方面的测试.研究发现,700℃下制备的催化剂活化H2O2,在 100 min内对亚甲基蓝(MB)降解率达92.0%.当热解温度在400～700℃范围内增大时,催化剂比表面积和C含量均增大.机理探究表明,催化剂表面的Fe0、C== C/C—C和C== O活性位点对活化H2O2发挥重要作用,有利于促进亚甲基蓝降解.此外,铁泥基催化剂/H2O2体系中羟基自由基(·OH)和单线态氧(1O2)是主要活性物种,超氧自由基(O2·-)发挥作用较小. |
| Abstract_FL | Resource utilization of waste iron sludge from wastewater treatment plants can be achieved by leverag-ing iron sludge-based catalysts to construct Fenton-like systems.Notably,the pyrolysis temperature modulates the composition of metal and non-metal sites on the catalyst surface,thus affecting the activation of hydrogen peroxide(H2O2).The catalysts prepared at different pyrolysis temperatures(400-700℃ )were analyzed in terms of mor-phology,composition,structure and activity.It was found that the degradation efficiency of methylene blue(MB)could reach 92.0% within 100 min with the activation of H2O2 by the catalyst obtained at 700 ℃.Additionally,the specific surface area and C content of the catalyst increased as the pyrolysis temperature increased from 400℃ to 700℃ .The mechanistic investigation revealed that Fe0,C== C/C—C and C== O active sites on the catalyst surface were critical for the activation of H2O2,which facilitated MB degradation.Moreover,hydroxyl radicals(·OH)and singlet oxygen(1O2)were the dominant active species in the iron sludge-derived catalyst/H2O2 system,with super-oxide radicals(O2·-)playing a minor role. |
| Author | 王俩 吴霜 梁澜 侯立安 陈冠益 程小双 李宁 |
| AuthorAffiliation | 天津大学环境科学与工程学院,天津 300350;中环保水务投资有限公司,北京 100082%天津大学环境科学与工程学院,天津 300350%天津商业大学机械工程学院,天津 300134 |
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| Author_FL | WU Shuang CHEN Guanyi LI Ning CHENG Xiaoshuang LIANG Lan WANG Lia HOU Li'an |
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| DocumentTitle_FL | Activation of H2O2 by carbonaceous iron sludge-derived catalyst for methylene blue wastewater treatment |
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| Keywords | 染料废水 dye wastewater Fenton-like 废弃铁泥 waste iron sludge 类Fenton |
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| Publisher | 天津大学环境科学与工程学院,天津 300350 中环保水务投资有限公司,北京 100082%天津大学环境科学与工程学院,天津 300350%天津商业大学机械工程学院,天津 300134 |
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| Title | 含碳铁泥基催化剂活化H2O2处理亚甲基蓝废水 |
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