| Ozonation process intensification of p-nitrophenol by in situ separation of hydroxyl radical scavengers and microbubbles | |
| Cheng, Wen1; Jiang, Li2; Quan, Xuejun1; Cheng, Chen1; Huang, Xiaoxue1; Cheng, Zhiliang1; Yang, Lu3 | |
| 2019-07-01 | |
| 发表期刊 | WATER SCIENCE AND TECHNOLOGY
 |
| ISSN | 0273-1223 |
| EISSN | 1996-9732 |
| 卷号 | 80期号:1页码:25-36 |
| 摘要 | The ozonation efficiency for removal of recalcitrant organic pollutants in alkaline wastewater is always low because of the presence of some hydroxyl radical scavengers. To solve this problem, the O3/Ca(OH)2 system was put forward, and p-nitrophenol (PNP) was chosen to explore the mechanism of this system. The effects of key operational parameters were studied respectively; the Ca(OH)2 dosage 3 g/L, ozone inlet flow rate 3.5 L/min, ozone concentration 65 mg/L, reactor pressure 0.25 MPa, and temperature 25 C were obtained as the optimal operating conditions. After 60 min treatment, the organic matter mineralized completely, which was higher than the sum of the ozonation-alone process (55.63%) and the Ca(OH)2 process (3.53%). It suggests that the calcium hydroxide in the O3/Ca(OH)2 process possessed a paramount role in the removal of PNP. The liquid samples and the precipitated substances were analyzed by gas chromatography mass spectrometry, X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy; it was demonstrated that Ca(OH)2 could accelerate the generation of hydroxyl radical and simultaneously in situ separate partial intermediate products and CO32 ions through some precipitation reactions. © IWA Publishing 2019 |
| 关键词 | Fourier transform infrared spectroscopy Gas chromatography Hydrated lime Lime Liquid chromatography Mass spectrometry Organic pollutants Ozone water treatment Ozonization Phenols Reaction intermediates Scanning electron microscopy Gas chromatography-mass spectrometry Hydroxyl radicals Micro-bubble Optimal operating conditions p-Nitrophenol Precipitation reaction Recalcitrant organic pollutants Situ separation |
| DOI | 10.2166/wst.2019.227 |
| 收录类别 | EI ; SCIE |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| WOS类目 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| WOS记录号 | WOS:000486895000003 |
| 出版者 | IWA Publishing |
| EI入藏号 | 20193807445691 |
| EI分类号 | 801 Chemistry ; 802.2 Chemical Reactions ; 802.3 Chemical Operations ; 804 Chemical Products Generally |
| 原始文献类型 | Journal article (JA) |
| 出版地 | LONDON |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.cqcet.edu.cn/handle/39TD4454/3002 |
| 专题 | 重庆电子科技职业大学 |
| 作者单位 | 1.College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing; 400054, China; 2.College of Artificial Intelligence and Big Data, Chongqing College of Electronic Engineering, Chongqing; 401331, China; 3.Chongqing Municipal Solid Waste Resource Utilization and Treatment Collaborative Innovation Center, Chongqing; 401331, China |
| 推荐引用方式 GB/T 7714 | Cheng, Wen,Jiang, Li,Quan, Xuejun,et al. Ozonation process intensification of p-nitrophenol by in situ separation of hydroxyl radical scavengers and microbubbles[J]. WATER SCIENCE AND TECHNOLOGY,2019,80(1):25-36. |
| APA | Cheng, Wen.,Jiang, Li.,Quan, Xuejun.,Cheng, Chen.,Huang, Xiaoxue.,...&Yang, Lu.(2019).Ozonation process intensification of p-nitrophenol by in situ separation of hydroxyl radical scavengers and microbubbles.WATER SCIENCE AND TECHNOLOGY,80(1),25-36. |
| MLA | Cheng, Wen,et al."Ozonation process intensification of p-nitrophenol by in situ separation of hydroxyl radical scavengers and microbubbles".WATER SCIENCE AND TECHNOLOGY 80.1(2019):25-36. |
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