Pervaporation of azeotropic mixtures ethanol/ethyl tert-butyl ether: influence of membrane conditioning and operation variables on pervaporation flux

Ortiz, Inmaculada; Alonso, Pedro; Urtiaga, Ane

doi:10.1016/s0011-9164(02)00693-8

Cited by 27 publications

(12 citation statements)

References 11 publications

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“…Pervaporation has applications in three major fields: separation of water from organic-aqueous mixtures, [6,13] separation of organics from organic-aqueous mixtures [19] and separation of organics from organic-organic mixtures. [20] Hydrophilic membranes were the first ones to have found industrial applications for separation of water from organic-aqueous mixtures by pervaporation. These membranes allow the dehydration of organic-aqueous mixtures, the extraction of water with a flux and selectivity depending on the chemical structure of the active layer.…”

Section: Introductionmentioning

confidence: 99%

Alcohol and Alkane Organic Extraction Using Pervaporation Process

Hamouni

Arous²,

Abdessemed

et al. 2019

Macromolecular Symposia

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In this work, different feed mixtures are investigated for the separation of alcohol‐water, toluene‐water, alcohol‐toluene, and alkane‐toluene mixtures by pervaporation using a poly (dimethylsiloxane) membrane (PDMS). The polymeric membrane is characterized by Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The total flux and membrane selectivity for hexane‐toluene mixtures are found to be greater than those obtained for heptane‐toluene, alcohol‐toluene, toluene‐water, and alcohol‐water mixtures. Moreover, the total flux and selectivity for the alkane‐toluene mixtures are found to be higher than those obtained for the alcohol‐toluene mixtures. The feed concentration and the temperature for hexane‐toluene mixture have the same effect on the membrane total flux. Overall, the pervaporation separation index (PSI) decreases with increasing feed concentration. The highest PSI value of 20 359 g m−2 h−1 is found at a hexane feed concentration of 10 wt%, a temperature of 40 °C, a permeation flux equal to 717 g m−2 h and a selectivity of 29.

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Section: Introductionmentioning

confidence: 99%

Alcohol and Alkane Organic Extraction Using Pervaporation Process

Hamouni

Arous²,

Abdessemed

et al. 2019

Macromolecular Symposia

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“…and Alonso. The PV performance is based on the experimental results reported by Ortiz et al . A mathematical model of the PV membrane modules was developed in Aspen Custom Modeler and integrated with Aspen Plus software.…”

Section: Methodsmentioning

confidence: 99%

“…First, we have carried out a rigorous simulation of the azeotropic distillation column and the pervaporation membrane units with the distillation column parameters previously reported by Streicher et al 10 and Alonso 41 . The PV performance is based on the experimental results reported by Ortiz et al 29 A mathematical model of the PV membrane modules was developed in Aspen Custom Modeler and integrated with Aspen Plus software. The mass transport rate of the components through the membrane is proportional to the activity gradient of permeant components as driving force.…”

Section: Methodsmentioning

confidence: 99%

“…The separation of organic–organic mixtures is possibly the most challenging application in pervaporation, and for that reason great efforts have been made in the last two decades for the development of new membranes . Specifically, for separating alcohol/ether mixtures various membrane materials have been studied, and in recent years some commercial membranes have become available . The ability of these membranes to break the alcohol/ether azeotropes by means of selective permeation of the alcohol has been experimentally demonstrated.…”

Section: Membrane Integrated Hybrid Processes In Etbe Productionmentioning

confidence: 99%

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Process flowsheet analysis of pervaporation‐based hybrid processes in the production of ethyl tert‐butyl ether

Norkobilov

Gorri

Ortiz

2017

J of Chemical Tech & Biotech

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This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/jctb.5186 CONCLUSION: Incorporating pervaporation modules in the process flowsheet for production of ETBE allows to unload the main separation unit (debutanizer column), thereby reducing energy consumption and operating costs and increasing throughput.

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“…Polyamideimide [5,11] and poly pyrrolidinone based membranes [12] were also studied in the same research center. Ortiz et al [13] used the commercial PERVAP 2256 ® membrane from Sulzer Chemtech. The basic development of this membrane was done by GFT with the help provided by different partners amongst whom were the Institut Franç ais du Pétrole (French Petroleum Institute) and the above mentioned laboratory in Nancy.…”

Section: Introductionmentioning

confidence: 99%