Chitosan-polytetrafluoroethylene composite membranes for separation of methanol and toluene by pervaporation

Moulik, Siddhartha; Vani, Bukke; Sajja, Sameer; Sridhar, S.

doi:10.1016/j.carbpol.2018.03.069

Cited by 45 publications

(19 citation statements)

References 39 publications

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“…Chitosan membrane is a kind of methanol permeable membrane, Tetraethoxysilane (TEOS) can be added as a crosslinking agent to reduce the flux slightly and improve the separation factor greatly [26]. In this paper, the value of separation factor α and flux J in two states due to modification of the chitosan membrane were calculated by regression analysis of experimental data provided in the literature, the calculation formulas are shown in (11)- (14).…”

Section: Optimization Calculation and Analysis Of The Distillation-mementioning

confidence: 99%

Prediction of New Distillation-Membrane Separation Integrated Process with Potential in Industrial Application

Ding

Wang

et al. 2021

Processes

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In this paper, a new integrated distillation-membrane separation process solution strategy based on genetic programming (GP) was established for azeotrope separation. Then, a price evaluation method based on the theory of unit membrane area was proposed. This method makes the membranes, which are still in the experimental stage, have no actual industrial cost, as a reference can also be used in this experimental study. For different characteristics and separation requirements of various azeotropic systems, the solution strategy can be matched with difference pervaporation membranes, and the optimal distillation-membrane separation integrated process can be solved quickly and accurately. Taking methanol-toluene as an example, the separation operation was optimized by using the algorithm. The effects of different feed flows and compositions on the modification of the chitosan membrane were discussed. These results provide a reliable basis for the prospects for development and modification direction of membrane materials which are still in the experimental research stage.

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Section: Optimization Calculation and Analysis Of The Distillation-mementioning

confidence: 99%

Prediction of New Distillation-Membrane Separation Integrated Process with Potential in Industrial Application

Ding

Wang

et al. 2021

Processes

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“…Genipin, which is produced from the hydrolysis of geniposide extracted from the fruits of Gardenia jasminoides Ellis, is attracted as a biocompatible and low biohazardous cross-linker [44,45]. Tetraethyl orthosilicate (TEOS) is also used as a covalent cross-linker, which serves to cross-link with chitosan polymers at their hydroxyl groups, to immobilize adsorbent particles, and to hydrophobize membrane surfaces [22,[46][47][48]. Jóźwiak and coworkers widely investigated the effect of the cross-linker type occurring covalent bond or ionic bond on the chitosan hydrogel prepared for ionic dye adsorption.…”

Section: Cross-linkermentioning

confidence: 99%

“…Due to a high hydrophilicity derived from abundant hydroxyl groups in glucosamine units, the polymeric membranes consisting of chitosan are suitable for separation between water and organic solvents using pervaporation processes [42,44,46,59]. From its hydrophilicity, the chitosan membrane has also been used as a separation membrane in direct methanol fuel cells (DMFCs) requiring blocking of methanol permeation as well as proton conductivity [60].…”

Section: Hydrophilicity-based Processmentioning

confidence: 99%

Innovative Separation Technology Utilizing Marine Bioresources: Multifaceted Development of a Chitosan-Based System Leading to Environmentally-Friendly Processes

Kashima¹,

Takahashi²,

Nakayama³

et al. 2021

Chitin and Chitosan - Physicochemical Properties and Industrial Applications [Working Title]

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Chitosan, known as a most typical marine biological polymer, has a fruitful capability of biocompatible gel formation. Attempts of chitosan have been made to develop it from the multifaceted viewpoint of separation technology. The physicochemical properties of chitosan containing a lot of hydroxyl groups and reactive amino groups help to build the characteristic polymer networks. The deacetylation degree of chitosan is found as the most influential factor to regulate properties of chitosan hydrogels. The antibacterial activity of the chitosan membrane is one of its notable abilities because of its practical application. The chitosan, its derivatives, and the complex formation with other substances has been used for applications in filtration and membrane separation processes. Adsorption processes based on chitosan have been also developed widely. Moreover, complex of chitosan gel helps to immobilize adsorbent particles. The chitosan membrane immobilizing Prussian-Blue for cesium ion removal from the aqueous phase is one of the leading cases. To elaborate the adsorption behavior on the chitosan immobilizing adsorbent, the isothermal equilibrium and mass transfer characteristics can be discussed. The adsorption process using chitosan-based membranes in combination with filtration in a flow process is advantageous compared with the batch process. More advanced studies of chitosan aerogel and chitosan nanofibers have been proceeded recently, especially for adapting to water purification and air filtration.

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“…This makes it possible to increase the process performance by depositing a thin selective polymer layer onto a porous support that provides mechanical strength and does not affect mass transfer [27,28]. CS was extensively studied for composite membrane formation [29,30,31,32,33,34]. A CS/Polytetrafluoroethylene composite membrane was used to separate the methanol/toluene mixture by pervaporation [29].…”

Section: Introductionmentioning

confidence: 99%

“…CS was extensively studied for composite membrane formation [29,30,31,32,33,34]. A CS/Polytetrafluoroethylene composite membrane was used to separate the methanol/toluene mixture by pervaporation [29]. The membrane exhibited a separation factor of 58.4 and permeation flux of 0.13 kg/(m 2 h) for the separation of azeotrope feed composition (68 wt.…”

Section: Introductionmentioning

confidence: 99%

Novel Composite Membranes Based on Chitosan Copolymers with Polyacrylonitrile and Polystyrene: Physicochemical Properties and Application for Pervaporation Dehydration of Tetrahydrofuran

et al. 2019

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Pervaporation has been applied for tetrahydrofuran (THF) dehydration with novel composite membranes advanced by a thin selective layer composed of chitosan (CS) modified by copolymerization with vinyl monomers, acrylonitrile (AN) and styrene, in order to improve the chemical and mechanical stability of CS-based membranes. Composite membranes were developed by depositing a thin selective layer composed of CS copolymers onto a commercially-available porous support based on aromatic polysulfonamide (UPM-20®). The topography and morphology of the obtained materials were studied by atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). Thermal properties and stability were determined by coupled evolved gas analysis (EGA-MS). Transport properties were estimated in pervaporation dehydration of THF. The effect of operating parameters for the pervaporation dehydration of THF such as feed compositions and temperatures (295, 308 and 323 K) was evaluated. It was shown that CS modification with different vinyl monomers led to a difference in physical and transport properties. The composite membrane with the thin selective layer based on CS-PAN copolymer demonstrated optimal transport properties and exhibited the highest water content in the permeate with a reasonably high permeation flux.

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Chitosan-polytetrafluoroethylene composite membranes for separation of methanol and toluene by pervaporation

Cited by 45 publications

References 39 publications

Prediction of New Distillation-Membrane Separation Integrated Process with Potential in Industrial Application

Prediction of New Distillation-Membrane Separation Integrated Process with Potential in Industrial Application

Innovative Separation Technology Utilizing Marine Bioresources: Multifaceted Development of a Chitosan-Based System Leading to Environmentally-Friendly Processes

Novel Composite Membranes Based on Chitosan Copolymers with Polyacrylonitrile and Polystyrene: Physicochemical Properties and Application for Pervaporation Dehydration of Tetrahydrofuran

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