| 太阳光/硫掺杂TiO2体系对双酚A的氧化性能研究 |
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| 引用本文： | 刘成,陈卫,陶辉,林涛.太阳光/硫掺杂TiO2体系对双酚A的氧化性能研究[J].环境科学,2009,30(6). |
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| 作者姓名： | 刘成 陈卫 陶辉 林涛 |
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| 作者单位： | 1. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京,210098;河海大学环境科学与工程学院,南京,210098
2. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京,210098 |
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| 基金项目： | 国家科技支撑计划项目(2006BAJ08B06,2007BAC26B03) |
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| 摘 要： | 利用小试试验研究了太阳光和硫(S)掺杂TiO2体系对水中双酚A(BPA)的降解效能及影响因素.结果表明,太阳光/S掺杂TiO2体系对纯水中BPA的去除效能较太阳光/TiO2体系显著提高,30 min时的去除率分别为79%和49%,且两体系对BPA的降解过程均很好地符合拟一级反应动力学模型;H2O2的投加量对两体系氧化BPA的性能均有显著的影响,但其最佳投加量不同(两体系的最佳H2O2浓度分别为20 mg/L和15 mg/L,太阳光/S掺杂TiO2比太阳光/TiO2体系高5 mg/L);较低的pH值有利于两体系中BPA的降解,pH为5.5时的反应速率常数比pH为8.5时高50%左右;腐殖酸会不同程度的降低两体系对BPA的降解速率,其影响均可以用二次方程来表示.此外,腐殖酸对太阳光/S掺杂TiO2体系的弱化作用要明显强于对太阳光/TiO2体系的,原因在于腐殖酸不仅会与BPA分子竞争.OH,而且会吸收部分可激发TiO2产生.OH的可见光.
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| 关 键 词： | 太阳光催化氧化 双酚A 硫掺杂TiO2 |
Performance of Solar/S-dOped TiO2 On the DecompOsitiOn Of BispheilOl A |
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| LIU Cheng,CHEN Wei,TAO Hui,LIN Tao.Performance of Solar/S-dOped TiO2 On the DecompOsitiOn Of BispheilOl A[J].Chinese Journal of Environmental Science,2009,30(6). |
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| Authors: | LIU Cheng CHEN Wei TAO Hui LIN Tao |
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| Institution: | 1;2;1.Key Laboratory of Integrated Regulation and Resource Development Shallow Lakes;Ministry of Education;Hohai University;Nanjing 210098;China;2.College of Environmental Science and Technology;China |
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| Abstract: | Removal efficiency and influencing factors of bisphenol A by the combined process of solar irradiation and S-doped TiO_2 were studied in detail,in which S-doped TiO_2 photo-catalyst with high activity was prepared by acid catalyzed hydrolysis method using thiourea as sulfur source.Results showed that bisphenol A could be more effectively oxidized by the solar/S-doped TiO_2 process than by solar/TiO_2 process,whose removal effect were 79% and 49% after 30 min's irradiation,respectively.Pseudo-first-order mod... |
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| Keywords: | solar catalyzed oxidation bisphonel A S-doped titanium dioxide |
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