Separation of ethanol–water solution by poly(acrylonitrile-co-acrylic acid) membranes

Hsueh, Chan Li; Kuo, Jui‐Chao; Huang, Yao-Hui; Wang, C. C.; Chen, Chuh‐Yung

doi:10.1016/j.seppur.2004.04.002

Cited by 34 publications

(11 citation statements)

References 11 publications

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“…2). [97][98][99][100][101][102][103][104][105][106][107][108][109][110][111] Preliminary economic analysis of a commercial scale (50 million gallons per year) fermentation-pervaporation system shows that simultaneous removal of ethanol from the fermentation broth can reduce the costs associated with fermentation (including capital cost and costs associated with utilities, labor, supplies, and general works) by 75% as compared to a conventional batch fermentation system, and decrease the distillation costs due to cleaner, more concentrated feed. 112…”

Section: Ethanol Recoverymentioning

confidence: 99%

Commercializing lignocellulosic bioethanol: technology bottlenecks and possible remedies

Banerjee

Mudliar²,

Sen

et al. 2009

Biofuels Bioprod Bioref

333

177

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With diminishing oil supplies and growing political instability in oil-producing nations, the world is facing a major energy threat which needs to be solved by virtue of alternative energy sources. Bioethanol has received considerable attention in the transportation sector because of its utility as an octane booster, fuel additive, and even as neat fuel. Brazil and the USA have been producing ethanol on a large scale from sugarcane and corn, respectively. However, due to their primary utility as food and feed, these crops cannot meet the global demand for ethanol production as an alternative transportation fuel. Lignocellulosic biomass is projected as a virtually eternal raw material for fuel ethanol production. The main bottleneck so far has been the technology concerns, which do not support cost-effective and competitive production of lignocellulosic bioethanol. This review sheds light on some of the practical approaches that can be adopted to make the production of lignocellulosic bioethanol economically attractive. These include the use of cheaper substrates, cost-effective pre-treatment techniques, overproducing and recombinant strains for maximized ethanol tolerance and yields, improved recovery processes, effi cient bioprocess integration, economic exploitation of side products, and energy and waste minimization. An integrated and dedicated approach can help in realizing large-scale commercial production of lignocellulosic bioethanol, and can contribute toward a cleaner and more energy effi cient world.

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Section: Ethanol Recoverymentioning

confidence: 99%

Commercializing lignocellulosic bioethanol: technology bottlenecks and possible remedies

Banerjee

Mudliar²,

Sen

et al. 2009

Biofuels Bioprod Bioref

333

177

View full text Add to dashboard Cite

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“…Nowadays, within the more stringent requirements of sustainable development, the environmentally friendly technology of pervaporation can provide a concrete response and a real solution for many separation processes, even on a larger, industrial scale [ 48 , 49 , 50 , 51 ]. The pervaporation process is used to dehydrate organic compounds [ 52 , 53 , 54 , 55 , 56 ], to remove small amounts of undesirable organic compounds from water-organic mixture [ 56 , 57 , 58 , 59 ], and to separate organic compounds from an organic mixture [ 60 , 61 , 62 , 63 ]. The water-alcohol separation was first used to study and apply the pervaporation process in the chemical industry [ 64 , 65 ].…”

Section: Introductionmentioning

confidence: 99%

Separation of Alcohol-Water Mixtures by a Combination of Distillation, Hydrophilic and Organophilic Pervaporation Processes

2020

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It can be stated that in the fine chemical industries, especially in the pharmaceutical industry, large amounts of liquid waste and industrial waste solvents are generated during the production technology. Addressing these is a key issue because their disposal often accounts for the largest proportion of the cost of the entire technology. There is need to develop regeneration processes that are financially beneficial to the plant and, if possible, reuse the liquid waste in the spirit of a circular economy, in a particular technology, or possibly elsewhere. The distillation technique proves to be a good solution in many cases, but in the case of mixtures with high water content and few volatile components, this process is often not cost-effective due to its high steam consumption, and in the case of azeotropic mixtures there are separation constraints. In the present work, the membrane process considered as an alternative; pervaporation is demonstrated through the treatment of low alcohol (methanol and ethanol) aqueous mixtures. Alcohol-containing process wastewaters were investigated in professional process simulator environment with user-added pervaporation modules. Eight different methods were built up in ChemCAD flowsheet simulator: organophilic pervaporation (OPV), hydrophilic pervaporation (HPV), hydrophilic pervaporation with recirculation (R-HPV), dynamic organophilic pervaporation (Dyn-OPV), dynamic hydronophilic pervaporation (Dyn-HPV), hybrid distillation-organophilic pervaporation (D + OPV), hybrid distillation-hydrophilic pervaporation (D + HPV), and finally hybrid distillation-hydrophilic pervaporation with recirculation (R-D + HPV). It can be stated the last solution in line was the most suitable in the terms of composition, however distillation of mixture with high water content has significant heat consumption. Furthermore, the pervaporation supplemented with dynamic tanks is not favourable due to the high recirculation rate in the case of tested mixtures and compositions.

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“…The unit operation is mainly used for dehydration of organic compounds from its aqueous mixtures [18][19][20], removal of low concentration organics from water [21][22][23] and organic-organic separation [24][25][26]. Depending on the main permeating compound two main areas of pervaporation process can be classified: hydrophilic and organophilic pervaporation [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Hybrid Method for VOC Removal from Process Wastewater: Distillation and Hydrophilic Pervaporation

Szilágyi

Trang

Fózer

et al. 2020

Period. Polytech. Chem. Eng.

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The study is motivated by the industrial problem from pharmaceutical industry, which is ethanol and methanol removal from process wastewater. To complete this goal hybrid method is investigated and optimized. Two distillation columns are sufficient for separation of alcohol-water mixture. Suitable water can be purified as bottom product of first column. Ethanol and methanol purification is achieved with combination of second distillation column and pervaporation. The target of this research is to rigorously model and optimize the separation of water-ethanol-methanol ternary mixture in professional flowsheet simulator environment. The minimal sufficient membrane transfers area and number of minimal theoretical stages of the columns are determined. Cost estimation is also investigated according to Douglas methodology. Considering the simulation and economic results it can be determined that, the hybrid configuration is suitable for separation of ternary mixture in 99.5 weight percent purity.

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Separation of ethanol–water solution by poly(acrylonitrile-co-acrylic acid) membranes

Cited by 34 publications

References 11 publications

Commercializing lignocellulosic bioethanol: technology bottlenecks and possible remedies

Commercializing lignocellulosic bioethanol: technology bottlenecks and possible remedies

Separation of Alcohol-Water Mixtures by a Combination of Distillation, Hydrophilic and Organophilic Pervaporation Processes

Modelling of Hybrid Method for VOC Removal from Process Wastewater: Distillation and Hydrophilic Pervaporation

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