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Removal of water from aroma aqueous mixtures using pervaporation processes 用渗透蒸发法从芳香水混合物中除去水分
Separations Technology Pub Date : 1996-02-01 DOI: 10.1016/0956-9618(96)00141-5
Habib Shaban
{"title":"Removal of water from aroma aqueous mixtures using pervaporation processes","authors":"Habib Shaban","doi":"10.1016/0956-9618(96)00141-5","DOIUrl":"10.1016/0956-9618(96)00141-5","url":null,"abstract":"<div><p>In the field of food technology the main applications of pervaporation through hydrophilic membranes are the removal or extraction of water from aroma azeotropic aqueous mixtures. In this study, experiments for removal of water containing aroma compounds of ethanol, propanol, butanol, hexanol, ethyl acetate and acetic acid were performed through a composite, plate and frame type hydrophilic PVA (poly vinyl alcohol) membrane in a 0.5 m<sup>2</sup> plane module at constant feed temperature and permeate Vacuum pressure. The analysis is presented in terms of variations in permeation flux and separation factor. The results show the decrease in separation factor as well as permeation flux with the increase of alcohol in feed. Hexanol does not permeate through PVA membrane. Activity coefficient of water is higher than that of organic. Pervaporation selectivity differ from Liquid-vapor thermodynamic equilibrium.</p></div>","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"6 1","pages":"Pages 69-75"},"PeriodicalIF":0.0,"publicationDate":"1996-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-9618(96)00141-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81234131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Interfacial effects in the solubilization of o-, p-substituted phenols 邻-，对取代苯酚增溶过程中的界面效应
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00125-5
Y. P. Saraf, S. Bhagwat
{"title":"Interfacial effects in the solubilization of o-, p-substituted phenols","authors":"Y. P. Saraf, S. Bhagwat","doi":"10.1016/0956-9618(95)00125-5","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00125-5","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"34 1","pages":"207-212"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79393911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Kinetics and mechanism of removal of 2, 4-dimethyl phenol from aqueous solutions with coal fly ash 粉煤灰去除水中2,4 -二甲基苯酚的动力学及机理
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00124-7
D. Batabyal, A. Sahu, S. Chaudhuri
{"title":"Kinetics and mechanism of removal of 2, 4-dimethyl phenol from aqueous solutions with coal fly ash","authors":"D. Batabyal, A. Sahu, S. Chaudhuri","doi":"10.1016/0956-9618(95)00124-7","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00124-7","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"29 1","pages":"179-186"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84364361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 55
Separation of 2,6-dimethylnaphthalene from a mixture of its isomers using lithium-incorporated zeolite Y synthesized by rapid crystallization method 用快速结晶法合成的锂掺杂Y型沸石分离2,6-二甲基萘及其异构体混合物
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00127-1
T. Inui, S.B. Pu
{"title":"Separation of 2,6-dimethylnaphthalene from a mixture of its isomers using lithium-incorporated zeolite Y synthesized by rapid crystallization method","authors":"T. Inui,&nbsp;S.B. Pu","doi":"10.1016/0956-9618(95)00127-1","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00127-1","url":null,"abstract":"<div><p>Lithium-incorporated zeolite Ys (Li-NaYs) were directly synthesized under a hydrothermal condition from a gel mixture of Li<sub>2</sub>O·Na<sub>2</sub>O·SiO<sub>2</sub>·Al<sub>2</sub>O<sub>3</sub>·H<sub>2</sub>O. It was confirmed by XRD, NMR and elementary analysis, that lithium ions could be introduced onto the ion sites of zeolite Y during the course of crystallization. Usage of lithium citrate as the lithium source is the indispensable factor to achieve the synthesis. In adsorption of mixtures of 2,6-dimethylnaphthalene and its isomers, Li-NaYs exhibited greater adsorptive capacities and higher adsorption selectivities to 2,6-dimethyl naphthalene than NaY. Direct hydrothermal synthesis of Li-incorporated zeolite Y prevents the blockage of pore openings and/or channels during lithium ion-exchange. Furthermore, the difference in adsorptive properties between Li-NaY and Li ion-exchanged NaY is due to Li ions being introduced onto the S<sub>1</sub> ion sites, which can hardly be ion-exchanged, during the hydrothermal synthesis.</p></div>","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"5 4","pages":"Pages 229-237"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-9618(95)00127-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91676545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Interfacial effects in the solubilization of o-, p-substituted phenols 邻-，对取代苯酚增溶过程中的界面效应
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00125-5
Yogesh P. Saraf, Sunil S. Bhagwat
{"title":"Interfacial effects in the solubilization of o-, p-substituted phenols","authors":"Yogesh P. Saraf,&nbsp;Sunil S. Bhagwat","doi":"10.1016/0956-9618(95)00125-5","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00125-5","url":null,"abstract":"<div><p>The solubilization of <em>ortho</em> and <em>para</em> isomers of substituted phenols such as nitro phenols, chlorophenols, cresols and isopropylphenols in anionic micelles is reported. A comparison of the free energy of micellar solubilization provides an insight into the effect of the nature and position of the substituent. The solubilization of the <em>ortho</em> substituted phenols was found to be energetically more favourable than that of corresponding <em>para</em> isomers when the substituent was polar in nature (nitropheols and chlorophenols). Conversely, phenols with nonpolar substituents (cresols and isopropylphenols) resulted in the <em>para</em> isomer being more favourably solubilized by the micelles.</p></div>","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"5 4","pages":"Pages 207-212"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-9618(95)00125-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91676544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Purification of oily wastewater by ultrafiltration 含油废水的超滤净化
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00123-9
K. Karakulski, A. Kozlowski, A. Morawski
{"title":"Purification of oily wastewater by ultrafiltration","authors":"K. Karakulski, A. Kozlowski, A. Morawski","doi":"10.1016/0956-9618(95)00123-9","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00123-9","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"65 1","pages":"197-205"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79310231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 61
Separation of pseudocumene from naphtha cracking raffinate by adductive crystallization using thiourea 硫脲内收结晶法分离石脑油裂化尾油中的伪木烯
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00122-0
Kwang-Joo Kim, Jung-Min Lee, S. Ryu
{"title":"Separation of pseudocumene from naphtha cracking raffinate by adductive crystallization using thiourea","authors":"Kwang-Joo Kim, Jung-Min Lee, S. Ryu","doi":"10.1016/0956-9618(95)00122-0","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00122-0","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"197 1","pages":"187-195"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72922134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Methodology for fractionating suspended particles using ultrasonic standing wave and divided flow fields 用超声驻波和分流场分选悬浮颗粒的方法学
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00130-1
Dwayne A. Johnson , Donald L. Feke
{"title":"Methodology for fractionating suspended particles using ultrasonic standing wave and divided flow fields","authors":"Dwayne A. Johnson ,&nbsp;Donald L. Feke","doi":"10.1016/0956-9618(95)00130-1","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00130-1","url":null,"abstract":"<div><p>A methodology to fractionate suspended particles according to size and/or acoustic properties is reported. This fractionation is accomplished by simultaneously subjecting the particles to a resonant acoustic field and a laminar flow field propagating in an orthogonal direction. The acoustic field induces a redistribution of the particles within the cross-section of a narrow separator channel while the laminar flow transports the particles along the separator channel towards the exit. By altering the strength of the flow relative to the strength of the acoustic field, the desired fractionation can be controlled. Proof-of-principle experiments conducted with binary mixtures of polystyrene particles are reported. The performance of the experimental device was analyzed using a model based on calculations of the trajectory of particles through the chamber. The acoustic method has potential to rapidly and selectively factionate suspended solids with very low specific power consumption.</p></div>","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"5 4","pages":"Pages 251-258"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-9618(95)00130-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91676542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 85
Bulk separation of hydrogen mixtures by a one-column PSA process 用一柱PSA法分离氢混合物
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00128-X
J. Yang, Sangsup Han, C. Cho, Chang-Ha Lee, H. Lee
{"title":"Bulk separation of hydrogen mixtures by a one-column PSA process","authors":"J. Yang, Sangsup Han, C. Cho, Chang-Ha Lee, H. Lee","doi":"10.1016/0956-9618(95)00128-X","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00128-X","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"9 1","pages":"239-249"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90364306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 37
Separation of 2,6-dimethylnaphthalene from a mixture of its isomers using lithium-incorporated zeolite Y synthesized by rapid crystallization method 用快速结晶法合成的锂掺杂Y型沸石分离2,6-二甲基萘及其异构体混合物
Separations Technology Pub Date : 1995-11-01 DOI: 10.1016/0956-9618(95)00127-1
T. Inui, S. Pu
{"title":"Separation of 2,6-dimethylnaphthalene from a mixture of its isomers using lithium-incorporated zeolite Y synthesized by rapid crystallization method","authors":"T. Inui, S. Pu","doi":"10.1016/0956-9618(95)00127-1","DOIUrl":"https://doi.org/10.1016/0956-9618(95)00127-1","url":null,"abstract":"","PeriodicalId":101160,"journal":{"name":"Separations Technology","volume":"203 1","pages":"229-237"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87149680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
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