Computer aided design, analysis and experimental investigation of membrane assisted batch reaction–separation systems

Mitkowski, Piotr Tomasz; Buchaly, Carsten; Kreis, Peter; Jonsson, Gunnar Eigil; Górak, Andrzej; Gani, Rafiqul

doi:10.1016/j.compchemeng.2008.07.012

Cited by 19 publications

(4 citation statements)

References 23 publications

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“…Recently, it has been reported that a hybrid process of pervaporation with conventional distillation or extraction process has been able to reduce operational costs 3. The combination of pervaporation with chemical reactors has also shown high potential to improve the product yield 4…”

Section: Introductionmentioning

confidence: 99%

Pervaporation performance of novel chitosan‐POSS hybrid membranes: Effects of POSS and operating conditions

Loo

Wang

2010

J Polym Sci B Polym Phys

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Four types of polyhedral oligosilsesquioxane (POSS)octaanion, octaammonium, octanitrophenyl, and octaaminophenyl-were incorporated into chitosan (CS) to fabricate inorganic-organic hybrid membranes. The hybrid membranes were employed for the pervaporation dehydration of ethanol aqueous solutions. The performance of the hybrid membranes was found to be influenced by the type and loading amount of POSS. In comparison with the neat CS membranes which showed a separation factor of 65.2 for 10 wt % water in the feed at 303 K, the hybrid membranes containing 5 wt % of octaanion and octaaminophenyl POSS showed high separation factors of 305.6 and 373.3, respectively. The effects of the operating condi-tions such as the feed composition and temperature on the pervaporation performance of the membranes were investigated. Activation energies for permeation in the membranes were estimated from Arrhenius relationship. The activation energies for ethanol permeation in the hybrid membranes were much higher than that in the CS membrane, which may account for the large enhancements in the selectivity of the hybrid membranes.

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Section: Introductionmentioning

confidence: 99%

Pervaporation performance of novel chitosan‐POSS hybrid membranes: Effects of POSS and operating conditions

Loo

Wang

2010

J Polym Sci B Polym Phys

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“…Systems with homogeneous catalysts have some important drawbacks, including equipment corrosion and final separation of the neutralized catalyst from the products stream. The replacement of liquid mineral acids by ion exchange resins with strong acid sites is one of the most popular alternatives employed in the literature to avoid the problems listed above (e.g., Parulekar, Tanaka et al, Benedict et al, , Nemec and van Gemert, Sanz and Gmehling, de la Iglesia et al, Mitkowski et al, and others; Table ). Some researchers applied bifunctional membranes, which are membranes combining the catalytic and separatory functions.…”

Section: Applications Of Membrane Reactors For In Situ Water Removalmentioning

confidence: 99%

“…Many efforts have focused on model development , and process variable assessment . The design of the system configuration has also been evaluated theoretically through modeling assumptions.…”

Section: Applications Of Membrane Reactors For In Situ Water Removalmentioning

confidence: 99%

Membrane Reactors for in Situ Water Removal: A Review of Applications

Diban

Aguayo

Bilbao

et al. 2013

Ind. Eng. Chem. Res.

108

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This paper reviews the investigated applications of membrane reactors for in situ water removal during catalytic reactions in the food, pharmaceutical, cosmetics, and petrochemical sectors. The global target in the works reported herein was the design of a compact and more efficient catalytic reactor (process intensification). By applying in situ water removal, two objectives have been pursued: i) overcoming the thermodynamic limitations of the reaction and ii) avoiding catalyst poisoning. Different solution strategies proposed to overcome the difficulties in operating a membrane reactor in extreme acidic or temperature conditions are addressed covering various aspects ranging from membrane materials to reactor configuration design using pervaporation or vapor permeation techniques. As a general remark, membrane materials (polymeric and inorganic) still lack the required characteristics or reproducibility necessary for industrial application in the sectors under study. Further investigation is required to accomplish this task.

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“…Additionally, due to the multifaceted nature of interactions between membrane, solvent, and solute, the prediction of transport mechanism in OSN is much more complicated compared to aqueous applications [23]. Nevertheless, mathematical description of NF separations, whether it is organic or an aqueous solution containing organic compounds, is of great interest for many researchers [24][25][26][27][28][29][30][31][32][33][34] and it is far from truly being predictive.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Total Volume Membrane Charge Density through Mathematical Modeling for Separation of Succinic Acid Aqueous Solutions on Ceramic Nanofiltration Membrane

et al. 2019

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Nanofiltration of aqueous solutions of succinic acid with the addition of sodium hydroxide or magnesium hydroxycarbonate has been investigated experimentally and modeled with the comprehensively described Donnan-Steric partitioning model. The experimental retentions of acid at the same pH varied between 16% and 78%, while the estimated total volume membrane charge densities were in the range of −35.73 and +875.69 mol/m 3 . This work presents a novel insight into the modeling of nanofiltration and investigates the relations between the estimated total volume membrane charge densities, ionic strength, and component concentration on the performance of ceramic membrane. In addition, this study takes into consideration other parameters such as pH regulation and viscosities of solutions.

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Computer aided design, analysis and experimental investigation of membrane assisted batch reaction–separation systems

Cited by 19 publications

References 23 publications

Pervaporation performance of novel chitosan‐POSS hybrid membranes: Effects of POSS and operating conditions

Pervaporation performance of novel chitosan‐POSS hybrid membranes: Effects of POSS and operating conditions

Membrane Reactors for in Situ Water Removal: A Review of Applications

Assessment of the Total Volume Membrane Charge Density through Mathematical Modeling for Separation of Succinic Acid Aqueous Solutions on Ceramic Nanofiltration Membrane

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