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A novel separation technique: Gas-assisted three-liquid-phase extraction for treatment of the phenolic wastewater
Yu, Pinhua1,2; Huang, Kun1; Zhao, Junmei1; Zhang, Chao1,2; Xie, Keng1,2; Deng, Fuli1,2; Liu, Huizhou1; Liu, HZ
2010-11-20
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume75Issue:3Pages:316-322
AbstractA novel technique, gas-assisted three-liquid-phase extraction (GATE), was proposed to improve three-liquid-phase separation of p-nitrophenol (p-NP) and o-nitrophenol (o-NP) from wastewater. The partition behavior of p-NP and o-NP into a three-liquid-phase system composed of hexane-PEG2000-(NH(4))(2)SO(4)-H(2)O at the aid of gas bubbling was discussed. It was demonstrated that the process of gas bubbling was effective for the mass transfer of p-NP and o-NP into PEG phase and hexane phase, respectively. Influences of various parameters including the phase-forming salt concentrations, gas flow rate, gas bubbling time, initial volume of hexane and PEG phase on distribution behavior of p-NP and o-NP were investigated. Under the optimal conditions for GATE, the removal ratio of p-NP and o-NP from wastewater could reach 81% and 90%, respectively. While the mass fraction of p-NP into PEG phase and o-NP into hexane phase arrived at 75% and 74%, respectively. The distribution ratio and concentration factor were all higher than conventional three-liquid-phase extraction system. During GATE processes, the dispersed PEG and hexane in (NH(4))(2)SO(4) aqueous solution can be captured by ascending gas streams. GATE is demonstrated to be an effective method for the simultaneously extraction and separation of two or more organic chemicals in one-step's three-liquid-phase extraction, and also provides a technique to prevent loss of dispersed polymers and organic solvents in aqueous phase in extraction process for treatment of the phenolic wastewater. (C) 2010 Elsevier B.V. All rights reserved.
KeywordThree-liquid-phase Extraction Gas-assisted Solvent Extraction P-nitrophenol O-nitrophenol Separation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2010.08.021
Indexed BySCI
Language英语
WOS KeywordSOLVENT SUBLATION ; AQUEOUS-SOLUTIONS ; TRACE-ELEMENTS ; REMOVAL ; SAMPLES ; ADSORPTION ; FLOTATION ; SYSTEMS ; LIGAND ; BLUE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000284453700011
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5569
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorLiu, HZ
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yu, Pinhua,Huang, Kun,Zhao, Junmei,et al. A novel separation technique: Gas-assisted three-liquid-phase extraction for treatment of the phenolic wastewater[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2010,75(3):316-322.
APA Yu, Pinhua.,Huang, Kun.,Zhao, Junmei.,Zhang, Chao.,Xie, Keng.,...&Liu, HZ.(2010).A novel separation technique: Gas-assisted three-liquid-phase extraction for treatment of the phenolic wastewater.SEPARATION AND PURIFICATION TECHNOLOGY,75(3),316-322.
MLA Yu, Pinhua,et al."A novel separation technique: Gas-assisted three-liquid-phase extraction for treatment of the phenolic wastewater".SEPARATION AND PURIFICATION TECHNOLOGY 75.3(2010):316-322.
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