Functionalized biopolymer based bipolar membrane with poly ethylene glycol interfacial layer for improved water splitting

Rajesh, A. Michael; Kumar, Mahendra; Shahi, Vinod K.

doi:10.1016/j.memsci.2011.02.009

Cited by 50 publications

(24 citation statements)

References 38 publications

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“…Calculations. The current efficiency, energy consumption, and transport number of ions in the process (Badruzzaman et al, 2009;Rajesh et al, 2011;Shi et al, 2010;Venugopal and Dharmalingam, 2012;Zhou et al,, 2009) were analyzed using the 12 cm x 10 cm Effective membrane area 120 cm 2 following eqs 1, 2, and 3:…”

Section: Methodsmentioning

confidence: 99%

Utilization of Bipolar Membrane Electrodialysis for Salt Water Treatment

Venugopal

Dharmalingam²

2013

Water Environment Research

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Bipolar ion-exchange membranes, using polystyrene ethylene utylenes polystyrene (PSEBS) with polyvinyl alcohol as the intermediate, were fabricated and evaluated for their potential to remove secondary salts from lab-prepared salt solutions. Experiments were carried out in batch re-circulation mode. The mechanical properties and microscopic images of the membranes were analyzed before, during, and after the electrodialysis process. The performance of the membranes in the stack was evaluated in terms of energy consumption and current efficiency, and found to be 1.07 Wh/mol and 0.67, respectively. Commercially-produced membranes were used as a comparison to the PSEBS-based membranes. In the case of the commercial membrane, polystyrene divinylbenzene, the values for the above parameters were observed to be 2.59 Wh/mol and 0.63, respectively. In addition, other parameters, such as transport number of ions and acid - alkali production, were evaluated for both PSEBS-based and commercially-produced membranes. Results indicated that PSEBS-based membranes exhibited better performance than the commercial membranes.

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Section: Methodsmentioning

confidence: 99%

Utilization of Bipolar Membrane Electrodialysis for Salt Water Treatment

Venugopal

Dharmalingam²

2013

Water Environment Research

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“…The thermal stability of the AEM was evaluated by recording thermograms in the temperature range 50–600 °C using a thermo‐gravimetric analyzer (TGA, Mettler Toledo TGA/SDTA851 with Star c software) under N 2 atmosphere at a heating rate of 10 °C min −1 . The counter ions transport number in the membrane phase was determined by Hittorf method; the detailed procedure is reported elsewhere , . The Cl − transport number of AEM was calculated using: where n is the charge on Cl − , F is the Faraday constant (96 500 coulombs), I is the applied current (A), t is the time (s), C 0 and C − are the initial and final concentration of Cl − in the anode compartment (mol L −1 ) and V 0 and V − are the initial and final volume of the anode compartment (L).…”

Section: Methodsmentioning

confidence: 99%

Electro‐membrane reactor for the conversion of lysine monohydrochloride to lysine by in situ ion substitution and separation

Kumar

Khan

Othman

2012

J of Chemical Tech & Biotech

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BACKGROUND: Commercially lysine (Lys) is produced as lysine monohydrochloride (LysCl). The presence of chloride ion (Cl−) in Lys makes it unfit for use in pharmaceutical and livestock feed industries. Various separation methods are required to achieve Lys from fermentation broths. This paper describes an electro‐membrane reactor with three compartments (EMR‐3) for the conversion of LysCl into Lys by in situ ion substitution and separation. RESULTS: The conversion of LysCl into Lys in EMR‐3 is achieved by in situ ion substitution and separation using organic‐inorganic hybrid anion‐exchange membrane (AEM). It is found that the rate of Lys formation is dependent on applied current densities and LysCl concentration. The 96.2% Lys is recovered and low energy (2.07 kWh kg−1) is consumed during the conversion of 0.10 mol L−1 LysCl in EMR‐3 at 10 mA cm−2. Moreover, high current efficiency (93.02%) is achieved under the similar experimental conditions. CONCLUSIONS: On the basis of process parameters (high Lys recovery and CE and low W), it is concluded that the developed electro‐membrane reactor can be efficiently applied for the conversion of LysCl into Lys in an economically viable manner. © 2012 Society of Chemical Industry

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“…BPMs consist of an anion-exchange membrane (AM) and a cation-exchange membrane (CM), that are permselective to anions and to cations, respectively, with an interfacial layer between them [35]. Catalysts have been included in the BPM interlayer to facilitate water dissociation, to reduce overpotential, and improve energy efficiency [36]. Inorganic nanomaterials are considered important catalysts to facilitate water dissociation.…”

Section: Hydrogen Production From Water Splitting In Photocatalytic Mmentioning

confidence: 99%

Hydrogen Production and Organic Synthesis in Photocatalytic Membrane Reactors: A Review

Argurio¹,

Lavorato²,

Molinari³

2020

Int. J. Membrane Sci. Techno.

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Photocatalytic Membrane Reactors (PMRs) are green and promising technologies for sustainable applications. The recent scientific literature on PMRs is reviewed with a particular focus on the photocatalytic hydrogen production from water splitting, CO2 conversion to solar fuels (CH3OH, C2H5OH, CH4 and HCOOH) and organic synthesis such as oxidation (benzene to phenol, cyclohexane to cyclohexanol, ferulic acid to vanillin) and reduction reactions (acetophenone to phenylethanol). Different types of PMRs, synthesis of various photocatalytic membranes and modification of some semiconductors, to improve selectivity and yield also under visible light, are discussed. The described results show that combination of photocatalysis and a membrane process to build PMRs is a promising approach in view of large-scale application and use of solar energy.

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Functionalized biopolymer based bipolar membrane with poly ethylene glycol interfacial layer for improved water splitting

Cited by 50 publications

References 38 publications

Utilization of Bipolar Membrane Electrodialysis for Salt Water Treatment

Utilization of Bipolar Membrane Electrodialysis for Salt Water Treatment

Electro‐membrane reactor for the conversion of lysine monohydrochloride to lysine by in situ ion substitution and separation

Hydrogen Production and Organic Synthesis in Photocatalytic Membrane Reactors: A Review

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