| Si-FeOOH/H2O2类芬顿降解盐酸四环素废水的效能及其机理 |
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| 引用本文： | 蒋胜韬,祝建中,管玉江,白书立,姚俊,叶青妹. Si-FeOOH/H2O2类芬顿降解盐酸四环素废水的效能及其机理[J]. 化工学报, 2015, 66(10): 4244-4251. DOI: 10.11949/j.issn.0438-1157.20150047 |
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| 作者姓名： | 蒋胜韬 祝建中 管玉江 白书立 姚俊 叶青妹 |
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| 作者单位： | 1.台州学院浙江省植物进化生态学与保护重点实验室, 浙江 台州 318000;2.河海大学环境学院浅水湖泊综合治理与资源开发教育部重点实验室, 江苏 南京 210098;3.浙江新农化工股份有限公司, 浙江 台州 317300 |
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| 基金项目： | 浙江省公益性技术应用研究计划项目(2013C33020);浙江省环保科技计划项目(2013B018);江苏高校优势学科建设工程资助项目。 |
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| 摘 要： | 采用碱沉法制备的Si-FeOOH作为非均相类芬顿催化剂,研究其催化降解盐酸四环素废水的效能,考察了催化剂投量、pH、过氧化氢加入量对盐酸四环素降解效能和反应速率的影响。实验结果表明:在催化剂投加量3.0 g·L-1、H2O2投加量9.9 mmol·L-1、pH为3、室温[(25±1)℃]的条件下,盐酸四环素降解率为90%,一级反应速率常数为0.0504 min-1。与催化剂FeOOH相比,类芬顿催化剂Si-FeOOH性能更卓越。同时采用探针化合物正丁醇、苯醌,证明了Si-FeOOH /H2O2 催化体系中的氧化活性种主要为羟基自由基(·OH)和超氧自由基(HO2·), 并推测了其催化反应机理。
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| 关 键 词： | 类芬顿 Si-FeOOH 盐酸四环素废水 过氧化氢 |
| 收稿时间： | 2015-01-13 |
| 修稿时间： | 2015-05-04 |
Degradation and mechanism of tetracycline hydrochloride in wastewater by Si-FeOOH/H2O2 Fenton-like |
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| JIANG Shengtao,ZHU Jianzhong,GUAN Yujiang,BAI Shuli,YAO Jun,YE Qingmei. Degradation and mechanism of tetracycline hydrochloride in wastewater by Si-FeOOH/H2O2 Fenton-like[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(10): 4244-4251. DOI: 10.11949/j.issn.0438-1157.20150047 |
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| Authors: | JIANG Shengtao ZHU Jianzhong GUAN Yujiang BAI Shuli YAO Jun YE Qingmei |
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| Affiliation: | 1.Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, China;2.Key Laboratory for Integrated Regulation and Resource Development on Shallow Lake ofMinistry of Education, College of Environment, Hohai University, Nanjing 210098, Jiangsu, China;3.Zhejiang Xinnong Chemical Industry Co., Ltd., Taizhou 317300, Zhejiang, China |
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| Abstract: | The performance of Si-FeOOH, as a type of Fenton-like heterogeneous catalyst made by alkaline precipitation methods, was evaluated with degrading tetracycline hydrochloride (TH) in wastewater and reaction condition including catalyst loading, pH and hydrogen peroxide dosage examined. The results show that the degradation rate of tetracycline hydrochloride can reach up to 90% and the reaction rate 0.0504 min-1 at catalyst loading 3.0 g·L-1, H2O2 dosage 9.9 mmol·L-1, pH 3 and temperature (25±1)℃. A comparison with FeOOH catalyst indicates that Fenton-like Si-FeOOH is better than FeOOH. Various contaminants and probe compounds (n-butanol, benzoquinone) were used to identify the active species involved in the catalytic system. The results revealed that the hydroxyl radicals (·OH) and superoxide radical (HO2·) may be responsible for the degradation of tetracycline hydrochloride (TH). The possible catalytic oxidation mechanism was also discussed. The use of Si-FeOOH /H2O2 system may be a feasible approach for the elimination of widely existing pollutants. |
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| Keywords: | Fenton-like Si-FeOOH tetracycline hydrochloride wastewater hydrogen peroxide |
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