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| Photochemical degradation of nonylphenol in aqueous solution：The impact of pH and hydroxyl radical promoters | |
| 引用本文： | Aleksandr Dulov,Niina Dulov,Marina Trapido. Photochemical degradation of nonylphenol in aqueous solution：The impact of pH and hydroxyl radical promoters[J]. 环境科学学报(英文版), 2013, 25(7): 1326-1330. DOI: 10.1016/S1001-0742(12)60205-8 |
| 作者姓名： | Aleksandr Dulov Niina Dulov Marina Trapido |
| 作者单位： | Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia;Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia;Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia |
| 基金项目： | This work was funded by the Estonian Science Foundation，the Estonian Research Council，partially supported by graduate school "Functional materials and technologies" funded by the European Social Fund under project 1.2.0401.09-0079 in Estonia |
| 摘 要： | The degradation of nonylphenol (NP) in aqueous solution with UV, H2O2/UV, and Fenton/photo-Fenton processes was studied. The efficacy of direct and hydrogen peroxide photolysis proved to be dependent on the pH value. The addition of H2O2 to UV treatment improved NP degradation. The application of UV photolysis and the H2O2/UV system at pH 7 resulted in low pseudo first-order rate constants at 10-4 sec-1. In the experiments at elevated pH values the pseudo-first order rate constants increased to 10-3 sec-1. The efficacy of the Fenton process was lower in comparison with UV and hydrogen peroxide photolysis. The addition of UV irradiation to the H2O2/Fe2+ system substantially improved NP degradation efficacy. In terms of performance, the photo-Fenton process was similar to the H2O2/UV process. The most favourable process for complete nonylphenol degradation considering both operational cost and treatment efficacy was H2O2/UV at pH 11 and 250 mol/L H2O2. |
| 关 键 词： | 光化学降解 pH值 壬基酚 水溶液 羟基自由基 Fenton法 紫外线照射 疗效比较 |
| 收稿时间： | 2012-10-06 |
| 修稿时间： | 2013-01-08 |
Photochemical degradation of nonylphenol in aqueous solution: The impact of pH and hydroxyl radical promoters |
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| Aleksandr Dulov,Niina Dulova and Marina Trapido. Photochemical degradation of nonylphenol in aqueous solution: The impact of pH and hydroxyl radical promoters[J]. Journal of environmental sciences (China), 2013, 25(7): 1326-1330. DOI: 10.1016/S1001-0742(12)60205-8 | |
| Authors: | Aleksandr Dulov Niina Dulova Marina Trapido |
| Affiliation: | Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia |
| Abstract: | The degradation of nonylphenol (NP) in aqueous solution with UV, H2O2/UV, and Fenton/photo-Fenton processes was studied. The efficacy of direct and hydrogen peroxide photolysis proved to be dependent on the pH value. The addition of H2O2 to UV treatment improved NP degradation. The application of UV photolysis and the H2O2/UV system at pH 7 resulted in low pseudo first-order rate constants at 10-4 sec-1. In the experiments at elevated pH values the pseudo-first order rate constants increased to 10-3 sec-1. The efficacy of the Fenton process was lower in comparison with UV and hydrogen peroxide photolysis. The addition of UV irradiation to the H2O2/Fe2+ system substantially improved NP degradation efficacy. In terms of performance, the photo-Fenton process was similar to the H2O2/UV process. The most favourable process for complete nonylphenol degradation considering both operational cost and treatment efficacy was H2O2/UV at pH 11 and 250 mol/L H2O2. |
| Keywords: | AOPs endocrine disrupting compound photo-Fenton process photolysis UVC radiation |
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