Separation of n-hexane/acetone mixtures by pervaporation using high density polyethylene/ethylene propylene diene terpolymer rubber blend membranes

Kumar, Pawan; Anilkumar, S.; Varughese, K. T.; Thomas, Sabu

doi:10.1016/j.jhazmat.2011.11.028

Cited by 12 publications

(2 citation statements)

References 21 publications

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“…Different components present in the solutions have different solubility in the hydrophobic/hydrophilic membrane, responsible for the separation 1 . The pervaporation process is also used to separate different organic compounds from their azeotropic solutions, such as n ‐hexane/acetone, 6 chlorinated hydrocarbon/acetone, 7 toluene/methanol, 8 methanol/methyl tert ‐butyl ether, 9 and sulfur containing hydrocarbons from petroleum products 10–14 . Different organic compounds have differential solubility and diffusivity in the pervaporative membranes responsible for the separation.…”

Section: Introductionmentioning

confidence: 99%

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Mishra

Jain

2021

Asia-Pacific J Chem Eng

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Analyzing the effects of feed characteristics and membrane transport properties are important for designing the industrial‐scale pervaporative desulfurization plants. In this study, a new method to analyze the effects of feed composition and membrane characteristics has been proposed, where these properties are represented by average vapor pressure and average permeance coefficient. Spiral wound module geometry is used in this study for more realistic industrial‐scale predictions. Results suggested that module performance in terms of stage cut and enrichment factor improved with increasing selectivity of the membrane. However, this effect was profound at lower selectivity (<5) and became negligible at higher selectivity (>10). Moreover, results also depicted that the increase in feed temperature increased enrichment factor when selectivity was low (<2.5), but this trend was reversed when selectivity was greater than 2.5. At a constant membrane selectivity, an increase in permeability reduced the enrichment factor. Thus, membrane selectivity should improve along with membrane permeability for better results. The pervaporation process was found more beneficial for removing highly volatile low molecular weight sulfur‐containing compounds. Finally, feed channel temperature drop and permeate channel pressure drop followed the trend of stage cut in all simulations. Therefore, the lower stage cut may improve module efficiency.

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Section: Introductionmentioning

confidence: 99%

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Mishra

Jain

2021

Asia-Pacific J Chem Eng

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“…Pervaporation is mainly used for alcohol dehydration (ethanol, isopropanol) [11,12], VOC extraction [13,14,15] such as chlorinated compounds [16,17], toluene [18], or benzene [19], and lastly for the organic/organic separation (isomers, benzene/cyclohexane) [20]. More precisely, experiments pervaporation with acetone are mainly applied for its dehydration [21,22,23], acetone-ethanol-butanol (ABE) recovery for fermentation broth [24,25], and more rarely for acetone-organic separation such as acetone/n-hexane [26]. Similarly, pervaporation tests for MEK are primarily focused on its extraction from water [27,28].…”

Section: Introductionmentioning

confidence: 99%

Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes

et al. 2019

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Solvents purification mainly used in pharmaceutical field such as acetone and methyl ethyl ketone (MEK) were performed through hybrid silica membranes and from binary and multi-components mixtures. Two hybrid silica membranes—zirconia doped bis(triethoxysilyl)methane and bis(triethoxysilyl)ethane (BTESE)—were studied. Flux, permeance, and separation factor were evaluated depending on temperature, composition, and number of organic compounds in the feed. Dehydration tests of acetone were operated at 30 and 45 °C following by acetone and MEK purification at 50 °C from multi-components hydro-organic mixtures where hydrophilic compounds (water, methanol) but also hydrophobic (dichloromethane (DCM) and/or toluene) were present. Results showed that the presence of Zr nanoparticles affected flux and improved selectivity in the case of dehydration. Experiments related to acetone and MEK purification, revealed a mass transfer alteration and a decrease of performance, from 99 to 97 wt% and from 98 to 95 wt% respectively, when the number of compounds in the initial feed grown up and more precisely, in the presence of DCM and toluene thus highlighting a possible coupling effect.

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Biobutanol: Research Breakthrough for its Commercial Interest

Bankar

Nimbalkar

Khedkar

et al. 2019

Liquid Biofuel Production

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Separation of n-hexane/acetone mixtures by pervaporation using high density polyethylene/ethylene propylene diene terpolymer rubber blend membranes

Cited by 12 publications

References 21 publications

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Removal of sulfur‐containing compounds from Fluid Catalytic Cracking unit (FCC) gasoline by pervaporation process: Effects of variations in feed characteristics and mass transfer properties of the membrane

Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes

Biobutanol: Research Breakthrough for its Commercial Interest

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