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题名: Concurrent destruction strategy: NaNO2-catalyzed, trichlorophenol-coupled degradation of p-nitrophenol using molecular oxygen
作者: Fu, Dongmei1;  Peng, Yanrong1;  Liu, Renhua2;  Zhang, Feifang1;  Liang, Xinmiao1, 2
关键词: Wet oxidation ;  Sodium nitrite ;  Wastewater treatment ;  Fate of carbon
刊名: CHEMOSPHERE
发表日期: 2009-05-01
DOI: 10.1016/j.chemosphere.2009.01.082
卷: 75, 期:6, 页:701-706
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Oxidative degradation of p-nitrophenol (PNP) was investigated with NaNO2 as the catalyst and dioxygen as the oxidizing agent in the presence of trichlorophenol (TCP). Although degradation of PNP alone was proved to be inefficient toward the NaNO2-mediated oxidative degradation system, when PNP in combination with TCP was used as the substrate, NaNO2 showed relatively high catalytic activity for eradicating both PNP and TCP with molecular oxygen. Reaction conditions to the degradation system, e.g., temperatures, reaction time, pH, NaNO2 and TCP concentrations were optimized. PNP could be highly efficiently degraded in the NaNO2/TCP/O-2 system (more than 99% removal for PNP) and the TOC removal of the mixture of PNP and TCP could reach 71% at 150 degrees C, 0.5 MPa oxygen pressure. Degradation products were determined, and 93% carbon atom was clarified. A plausible overall mechanism for the formation of active species is described, in which peroxylnitrite was believed to be a dominating active intermediate being responsible for destroying the substrates, PNP and TCP. The novel NaNO2-based concurrent oxidation system for PNP and TCP provides a potential application in treatment of multi-component industrial effluents. (c) 2009 Elsevier Ltd. All rights reserved.
关键词[WOS]: WET AIR OXIDATION ;  SUBSTITUTED PHENOLS ;  ACTIVATED CARBON ;  AQUEOUS-SOLUTION ;  NITRIC-OXIDE ;  4-NITROPHENOL ;  PHOTOCATALYSIS ;  BIODEGRADATION ;  PEROXYNITRITE ;  SEPARATION
语种: 英语
WOS记录号: WOS:000266145600001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141462
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.E China Univ Sci & Technol, Sch Pharm, Shanghai 200237, Peoples R China

Recommended Citation:
Fu, Dongmei,Peng, Yanrong,Liu, Renhua,et al. Concurrent destruction strategy: NaNO2-catalyzed, trichlorophenol-coupled degradation of p-nitrophenol using molecular oxygen[J]. CHEMOSPHERE,2009,75(6):701-706.
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