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学科主题: 物理化学
题名: The ozone mass transfer characteristics and ozonation of pentachlorophenol in a novel microchannel reactor
作者: Ren, Jian1, 2;  He, Songbo1;  Ye, Chunbo1, 2;  Chen, Guangwen1;  Sun, Chenglin1
通讯作者: 孙承林
关键词: Microchannel ;  Pentachlorophenol ;  Ozonation ;  Mass transfer
刊名: CHEMICAL ENGINEERING JOURNAL
发表日期: 2012-11-01
DOI: 10.1016/j.cej.2012.09.011
卷: 210, 页:374-384
收录类别: SCI
文章类型: Article
部门归属: DNL09
项目归属: 902;903
产权排名: 1,1
类目[WOS]: Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: A "T" junction microchannel was employed to investigate the ozone mass transfer characteristics without chemical reaction taking place in the solution firstly. The correlations of the experimental k(L)alpha values with dimensionless numbers: Sh(L), Re-t, Re-L, Sc for Taylor, slug-annular and churn flow regimes were proposed through a least square regression method. The gas-liquid interfacial area was determined by chemical adsorption method in the present work. The results indicated that the effect of superficial liquid velocity on the interfacial area was insignificant compared with that of superficial gas velocity. And on the basis of the interfacial area determined above, the liquid side ozone mass transfer coefficient under varied superficial gas and liquid velocities was calculated. The mass transfer rate was accelerated in the presence of PCP in solution. The reaction rate between PCP and O-3 was proved to fell in the instantaneous regime based on the experimental results of E-O3 increasing with either liquid PCP concentration or the reciprocal interfacial ozone concentration, (C-O3,C-L,C-i)(-1). In addition, further studies indicated that dissociation of PCP and the elevation of the average mass transfer driving forces caused by increasing pH and gaseous ozone concentration, respectively, availed the degradation of PCP in the microchannel. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: GAS-LIQUID FLOW ;  MICROFABRICATED MULTIPHASE REACTORS ;  CHEMICAL-REACTION ;  AQUEOUS-SOLUTIONS ;  INTERFACIAL AREA ;  TAYLOR FLOW ;  KINETICS ;  WATER ;  MICROREACTORS ;  HYDRODYNAMICS
语种: 英语
WOS记录号: WOS:000312617100044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117886
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 Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Ren, Jian,He, Songbo,Ye, Chunbo,et al. The ozone mass transfer characteristics and ozonation of pentachlorophenol in a novel microchannel reactor[J]. CHEMICAL ENGINEERING JOURNAL,2012,210:374-384.
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