Analysis of the membrane thickness effect on the pervaporation separation of methanol/methyl tertiary butyl ether mixtures

Villaluenga, J.P.G.; Khayet, M.; Godino, P.; Seoane, B.; Mengual, J.I.

doi:10.1016/j.seppur.2005.06.006

Cited by 35 publications

(12 citation statements)

References 22 publications

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“…Previous investigators have reported that with increase in membrane thickness J decreases whereas no clear tendency of β was observed with the variation of same.…”

Section: Resultsmentioning

confidence: 73%

Separation of phenanthrene/N‐tetradecane mixtures (model diesel) via pervaporation using an aromatic polyimide membrane

Roychowdhury

Mitra

2016

Polymer Engineering & Sci

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The present investigation focuses on the separation of phenanthrene (a polyaromatic hydrocarbon) from n-tetradecane (model diesel composition) via pervaporation using a fabricated aromatic polyimide membrane. The experiments demonstrate preferential permeation of the polyaromatic for all films within the studied experimental range. The influence of operating temperature, membrane pretreatment time, membrane composition, and membrane thickness on the pervaporative performance were investigated. Statistical software Design Expert 7.1.4 was used to derive the regression equation describing the effect of the above mentioned factors on the pervaporation separation index. These factors are optimized using response surface methodology. The highest value of pervaporation separation index obtained is 1.5277 kg m 22 h 21 and the corresponding optimized condition is: operating temperature 493 K, pretreatment time 16.55 h with a membrane composition of 2.76 wt% of phenanthrene in polyamic acid and thickness 53.22 mm.

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“…Previous investigators have reported that with increase in membrane thickness J decreases whereas no clear tendency of β was observed with the variation of same.…”

Section: Resultsmentioning

confidence: 73%

Separation of phenanthrene/N‐tetradecane mixtures (model diesel) via pervaporation using an aromatic polyimide membrane

Roychowdhury

Mitra

2016

Polymer Engineering & Sci

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“…Therefore, the influence of membrane thickness is often discussed in the literature. The thickness of a composite membrane was also found to be the most sensitive parameter for flux determination . The measurement of a very thin layer is difficult but on the other hand a thin selective layer is required for a higher flux.…”

Section: Resultsmentioning

confidence: 99%

Minimization of the Theoretical Error of Input Parameters for a Vapor Permeation Apparatus

et al. 2018

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All input experimental errors for membrane flux determination were analyzed. The overall error in pressure did not largely influence the determination of membrane flux. The main contribution to errors was ascribed to flow meters and membrane thickness. The choice of an optimal operational range for input parameters led to elimination of at least 2/3 of the theoretical relative error for subsequent evaluation of the permeability of individual species. This is especially valuable for low-permeable membranes, whereas a very low relative theoretical error can be obtained in the case of highly permeable materials.

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“…The membrane permeation rate increases as the membrane thickness decreases, and a thinner membrane offers a higher permeability. [45,46] In this study, thicker membranes were necessary in order to ensure the mechanical resistance and strength as dense unsupported polymeric membranes were prepared. The results obtained are promising in comparison with homogeneous PVA membrane, and clinoptilolite filled PVA membrane will be a good alternative to membranes currently available.…”

Section: Pervaporation Resultsmentioning

confidence: 99%

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

2013

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Clinoptilolite filled poly(vinylalcohol) membranes containing different weight percentages of zeolite were prepared by solution casting method, and the prepared membranes were characterised by scanning electron microscopy, thermogravimetric analysis and differential scanning calorimeter. Sorption and permeation experiments were carried out at 30, 40 and 50°C in pure water, ethanol (EtOH) and ethylacetate. In addition, the pervaporation separation of EtOH-water mixtures was conducted for 20-80 wt% water containing EtOH-water binary mixtures at 30, 40 and 50°C. It is observed that permeation rates increased and selectivity decreased with the increasing of temperature and the water content in the feed.

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Analysis of the membrane thickness effect on the pervaporation separation of methanol/methyl tertiary butyl ether mixtures

Cited by 35 publications

References 22 publications

Separation of phenanthrene/N‐tetradecane mixtures (model diesel) via pervaporation using an aromatic polyimide membrane

Separation of phenanthrene/N‐tetradecane mixtures (model diesel) via pervaporation using an aromatic polyimide membrane

Minimization of the Theoretical Error of Input Parameters for a Vapor Permeation Apparatus

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

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