Gas-filled membrane absorption: a review of three different applications to describe the mass transfer by means of a unified approach

Hasanoğlu, Ayça; Romero, Julio; Plaza, Andrea; Wladimir, Silva,

doi:10.1080/19443994.2013.769603

Cited by 16 publications

(11 citation statements)

References 29 publications

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“…The Ripper method 5 is also used in the determination of sulfite and as a second control in this work. This research has been focused on the electrochemical determination of sulfite present in wines by cyclic voltammetry in which, after passing the wine through a system of membranes, the SO 2 is extracted by an absorber solution (0.02 mol·L -1 NaOH) that, in addition to extract the SO 2 , acts as the sole electrolyte 6 . The foundation of the aspiration method for the determination of free sulfite in wines 5 consists in the removal of the SO 2 present in the wine by passing a current of air or inert gas (nitrogen) through the wine, which is previously acidified to displace the equilibrium from neutral sulfite and bisulfite to sulfur dioxide.…”

Section: Methodsmentioning

confidence: 99%

“…The total sulfur dioxide is then determined by the aspiration method applied to heated and strongly acidified wine. The combined sulfite is determined by the difference between the red wine samples with the receiving solution 6 (0.02M NaOH) in a nondispersive mode. These solutions were circulated in countercurrent mode using peristaltic pumps, where the wine sample circulated through the shellside; meanwhile the receiving phased was circulated into the lumen of the hollow fiber contactor.…”

Section: Methodsmentioning

confidence: 99%

“…This study demonstrates that sulfite content can be measured by cyclic voltammetry enhanced by a membrane absorber system described in a previous work 6,7 . Membrane absorber efficiently separates the sulfite contained in wine and avoids the presence of other compounds, which can interfere these measurements.…”

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confidence: 99%

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Electrochemical Method for Sulfite Determination in Wines by Electrochemical Response Using a Membrane Absorber System

Arce¹,

Báez²,

Muena³

et al. 2016

J. Chil. Chem. Soc.

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This research demonstrates how the sulfite content can be measured by cyclic voltammetry using a previously reported membrane absorber system, which separates efficiently sulfite present in wine. Results obtained show notably similar values to those obtained for the same wine samples using modified MonierWilliams method (aspiration method) and Ripper method. The membrane absorber system allows the release of the free SO 2, and can be used to determine the sulfur dioxide present in juices and other foods that contain high concentrations of phenols, polyphenols and other structurally related compounds that act as interferers in the electrochemical oxidation of sulfite. The absorber solution allows a direct measurement without change in pH or added electrolyte, facilitating the determination of great amounts of samples from diverse wines using only one calibration curve. In this way, a system that allows the detection of sulfite and that can be used in vineyards is obtained.Finally, the method was assessed on linearity, sensitivity, accuracy, reproducibility and repeatability, obtaining values that account for the applicability of the method.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical Method for Sulfite Determination in Wines by Electrochemical Response Using a Membrane Absorber System

Arce¹,

Báez²,

Muena³

et al. 2016

J. Chil. Chem. Soc.

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“…The feasibility of the process, nature of fouling on membrane surface, regeneration, long-term applicability of the process, quality of the concentrated products, and comparative evaluation of the extent of concentration are the main aims of the present investigation. In gas-filled membrane application, the water vapor is transferred from the feed solution through the pores of the hydrophobic membrane to the permeate side (Hasanoǧlu, Romero, Plaza, & Silva, 2013). The membrane provides a physical barrier between feed and permeate streams (Shen, Zhang, Mondal, & Wickramasinghe, 2008).…”

Section: Introductionmentioning

confidence: 99%

Combined Osmotic and Membrane Distillation for Concentration of Anthocyanin from Muscadine Pomace

Anari¹,

Mai

Sengupta³

et al. 2019

Journal of Food Science

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Bioactive anthocyanins from aqueous extracts of muscadine grape pomace were concentrated using osmotic distillation (OD) and direct contact membrane distillation (DCMD) using polypropylene (PP) and poly(ethylene chlorotrifluoroethylene) (ECTFE) membranes. The driving force for OD is created by using a high concentration brine solution while the driving force for DCMD is generated by elevating the feed temperature relative to the permeate temperature. The brine concentration used was 4 M. The lowest fluxes were obtained for OD. Given the temperature sensitive nature of anthocyanins, the maximum temperature difference during DCMD was limited to 30 °C. The feed temperature was 40 °C and the permeate at 10 °C. Consequently, the maximum flux during DCMD was also limited. A combination of OD and DCMD was found to give the highest fluxes. High‐performance liquid chromatography (HPLC) and HPLC‐electrospray mass spectrometry were used to identify and quantify anthocyanins, cyanidin‐3,5‐O‐diglucoside, delphinidin‐3,5‐O‐diglucoside, petunidin‐3,5‐O‐diglucoside, peonidin‐3,5‐O‐diglucoside, and malvidin‐3,5‐O‐diglucoside. The results obtained here suggest that, though water fluxes for DI water feed streams for PP and ECTFE membrane were similar, the fluxes obtained for the two membranes when using muscadine pomace extracts were different. Concentration factors of close to 3 was obtained for anthocyanins. Membranes also showed slightly different performance in the concentration process. Membrane surfaces were analyzed using scanning electron microscopy and Fourier‐transformed infrared spectroscopy. The results suggest that adsorption of these anthocyanins on the membrane surface lead to performance differences. In an actual operation, selection of an appropriate membrane and regeneration of the membrane will be important for optimized performance. Practical Applications Anthocyanins are valuable therapeutic compounds, which are found in the solid residue left following fruit juice pressing. However, recovery and concentration of these therapeutic compounds remains challenging due to their stability. Here, a novel membrane‐based unit operation has been investigated in order to concentrate the anthocyanins that have been extracted into aqueous solutions. The unit operation investigated here use mild processing conditions. Insights into the factors that need to be considered when optimizing of the unit operation for commercialization are discussed.

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“…The GFMA process has been applied to extract or recover solutes of interest, such as ammonia from wastewater [40,46], SO 2 from wine [41,47] and HCN from different wastewaters [11], [42,48,49]. These studies have shown high recoveries of volatile solutes (>90%), producing a concentrate product in the absorption solution.…”

Section: Gas-filled Membrane Absorptionmentioning

confidence: 99%

Membrane Gas Absorption Processes: Applications, Design and Perspectives

Figueroa¹,

Cuenca²

2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

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Membrane gas absorption (MGA) is one of the most attractive technologies among the osmotically driven membrane processes because of its configurational advantages with respect to the conventional absorption systems that use packed bed columns for different industrial applications. Nowadays, membrane gas absorption is used in industrial wastewater treatment, CO 2 absorption from greenhouse gases, treatment of flue-gas and off-gas streams, which contain SO 2 ,H 2 S, NH 3 or HCl, upgrading and desulphurization of biogas from anaerobic digesters and landfills and acid gas removal of natural gas and olefin-paraffin separation in the petrochemical industry, among other applications. In this framework, the advantages of membrane gas absorption over packed bed processes are related to the decreasing of installation surface requirements through compact process design and easy operation modes. These aspects will increase the applications of these types of processes in the mid-term. Nevertheless, the main design criteria of this technology have been poorly addressed in the literature. This chapter summarizes the fundamental aspects of transport phenomena that drive these processes, as well as the main conceptual aspects, to propose a correct design through an overview of the current status of this technology and its potential applications, challenges and future trends.

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Gas-filled membrane absorption: a review of three different applications to describe the mass transfer by means of a unified approach

Cited by 16 publications

References 29 publications

Electrochemical Method for Sulfite Determination in Wines by Electrochemical Response Using a Membrane Absorber System

Electrochemical Method for Sulfite Determination in Wines by Electrochemical Response Using a Membrane Absorber System

Combined Osmotic and Membrane Distillation for Concentration of Anthocyanin from Muscadine Pomace

Membrane Gas Absorption Processes: Applications, Design and Perspectives

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