Pervaporation separation of acetic acid/water mixtures through sodium alginate/polyaniline polyion complex membrane

Moulik, Siddhartha; Nazia, Shaik; Vani, Bukke; Sridhar, S.

doi:10.1016/j.seppur.2016.06.027

Cited by 45 publications

(22 citation statements)

References 18 publications

(14 reference statements)

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“…due to its high biocompatibility, solubility in water, low toxicity, ability to form stable aqueous hydrogels, and film-forming properties. Sodium alginate is also actively applied in membrane technology as a polyelectrolyte [6][7][8] and for the preparation of membranes for fuel cell applications [9], vapor permeation [10][11][12], nanofiltration [13,14], ultrafiltration [15], and pervaporation [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Novel Mixed Matrix Sodium Alginate–Fullerenol Membranes: Development, Characterization, and Study in Pervaporation Dehydration of Isopropanol

et al. 2020

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Novel mixed matrix dense and supported membranes based on biopolymer sodium alginate (SA) modified by fullerenol were developed. Two kinds of SA–fullerenol membranes were investigated: untreated and cross-linked by immersing the dry membranes in 1.25 wt % calcium chloride (CaCl2) in water for 10 min. The structural and physicochemical characteristics features of the SA–fullerenol composite were investigated by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopic methods, scanning electron (SEM) and atomic force (AFM) microscopies, thermogravimetric analysis (TGA), and swelling experiments. Transport properties were evaluated in pervaporation dehydration of isopropanol in a wide concentration range. It was found that the developed supported cross-linked SA-5/PANCaCl2 membrane (modified by 5 wt % fullerenol) possessed the best transport properties (the highest permeation fluxes 0.64–2.9 kg/(m2 h) and separation factors 26–73,326) for the pervaporation separation of the water–isopropanol mixture in the wide concentration range (12–90 wt % water) at 22 °C and is suitable for the promising application in industry.

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Section: Introductionmentioning

confidence: 99%

Novel Mixed Matrix Sodium Alginate–Fullerenol Membranes: Development, Characterization, and Study in Pervaporation Dehydration of Isopropanol

et al. 2020

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“…Finite element method (FEM) is applied by this software to solve conservation equations numerically. Previous simulations of membrane separation processes using FEM showed that this method was an accurate, valid and powerful technique for solving mass and momentum equations [23,25,29]. The computational time for solving the equations was about 2 minutes.…”

Section: Numerical Solution Of the Conservation Equationsmentioning

confidence: 99%

“…This produces a complex morphology and transport situation. Extensive studies have been conducted for mass transfer modeling of PV systems [23][24][25][26][27][28][29][30]. Recently Rezakazemi et al (2011) proposed a model for PV separation of water/ethylene glycol solution based on solving equations of mass and momentum conservation (Navier-Stokes equations) with Finite Element Method (FEM) [25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore Naa Zeolite Membranes

Mansoor¹,

Zahra²

2017

IJASE

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Zeolite membranes have uniform and molecular-sized pores that separate molecules based on the differences in the molecules' adsorption and diffusion properties. Strong electrostatic interaction between ionic sites and water molecules (due to its highly polar nature) makes the zeolite NaA membrane very hydrophilic. Zeolite NaA membranes are thus well suited for the separation of liquid-phase mixtures by pervaporation. In this study, experiments were conducted with various Ethanol-water mixtures (1-20 wt. %) at 25 °C. Total flux for Ethanol-water mixtures was found to vary from 0.331 to 0.229 kg/m 2 .h with increasing Ethanol concentration from 1 to 20 wt.%. Ionic sites of the NaA zeolite matrix play a very important role in water transport through the membrane. These sites act both as water sorption and transport sites. Surface diffusion of water occurs in an activated fashion through these sites. The precise Nano-porous structure of the zeolite cage helps in a partial molecular sieving of the large solvent molecules leading to high separation factors. A comparison between experimental flux and calculated flux using Stephan Maxwell (S.M.) correlation was made and a linear trend was found to exist for water flux through the membrane with Ethanol concentration. A comprehensive model also was proposed for the Ethanol/water pervaporation (PV) by Finite Element Method (FEM). The 2D model was masterfully capable of predicting water concentration distribution within both the membrane and the feed side of the pervaporation membrane module.

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“…The survey indicated that SA based membranes have been reported to perform outstanding separation characteristics in dehydrating the aqueous-organic mixtures. PV membranes were prepared from SA-polyaniline (SA-PANi) polymer casted on ultra-porous PAN and PES supports for acetic acid dehydration [ 111 ]. In fact, PAN and PES supported SA-PANi composite membrane showed fluxes/selectivities of 0.07/441 and 0.04 kg m −2 h −1 /359.3, respectively, at 2 wt % of water in feed mixture.…”

Section: Membranes For Pv Applicationsmentioning

confidence: 99%

Polymeric Nanocomposite Membranes for Next Generation Pervaporation Process: Strategies, Challenges and Future Prospects

Roy

Singha²

2017

Membranes

100

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Pervaporation (PV) has been considered as one of the most active and promising areas in membrane technologies in separating close boiling or azeotropic liquid mixtures, heat sensitive biomaterials, water or organics from its mixtures that are indispensable constituents for various important chemical and bio-separations. In the PV process, the membrane plays the most pivotal role and is of paramount importance in governing the overall efficiency. This article evaluates and collaborates the current research towards the development of next generation nanomaterials (NMs) and embedded polymeric membranes with regard to its synthesis, fabrication and application strategies, challenges and future prospects.

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Pervaporation separation of acetic acid/water mixtures through sodium alginate/polyaniline polyion complex membrane

Cited by 45 publications

References 18 publications

Novel Mixed Matrix Sodium Alginate–Fullerenol Membranes: Development, Characterization, and Study in Pervaporation Dehydration of Isopropanol

Novel Mixed Matrix Sodium Alginate–Fullerenol Membranes: Development, Characterization, and Study in Pervaporation Dehydration of Isopropanol

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore Naa Zeolite Membranes

Polymeric Nanocomposite Membranes for Next Generation Pervaporation Process: Strategies, Challenges and Future Prospects

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