Computational study of sweeping gas membrane distillation process – Flux performance and polarization characteristics

Alqsair, Umar F.; Alshwairekh, Ahmed M.; Alwatban, Anas M.; Öztekin, Alparslan

doi:10.1016/j.desal.2020.114444

Cited by 28 publications

(7 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a final comment, we can observe that the trends depicted in Figure 5 are in relative agreement with the behaviors obtained in experimental and modeling studies in the literature [ 25 , 36 , 37 , 40 , 41 , 42 , 43 ]. Regarding the application of SGMD with inorganic membranes, minimal experimental data obtained with prototype membranes are available.…”

Section: Resultssupporting

confidence: 87%

See 1 more Smart Citation

The Role of the Morphological Characterization of Multilayer Hydrophobized Ceramic Membranes on the Prediction of Sweeping Gas Membrane Distillation Performances

et al. 2022

View full text Add to dashboard Cite

This paper shows which morphological characterization method is most appropriate to simulating membrane performance in sweeping gas membrane distillation in the case of multilayer hydrophobized ceramic membranes. As a case study, capillary four-layer hydrophobic carbon-based titania membranes arranged in bundles in a shell-and-tube configuration were tested with NaCl-water solutions using air as sweeping gas, operating at temperatures from 40 to 110 °C and at pressures up to 5.3 bar. Contrary to what is generally performed for polymeric membranes and also suggested by other authors for ceramic membranes, the mass transfer across the membrane should be simulated using the corresponding values of the mean pore diameter and the porosity-tortuosity ratio of each layer and measured by the layer-by-layer (LBL) method. Comparison of the modeling results with experimental data highlights that the use of parameters averaged over the entire membrane leads to an overestimation by a factor of two to eight of the modeled fluxes, with respect to the experimental values. In contrast, the agreement between the modeled fluxes and the experimental values is very interesting when the LBL parameters are used, with a discrepancy on the order of +/−30%. Finally, the model has been used to investigate the role of operative parameters on process performances. Process efficiency should be the optimal balance between the concomitant effects of temperature and velocity of the liquid phase and pressure and velocity of the gas phase.

show abstract

Section: Resultssupporting

confidence: 87%

“…A dedicated MATLAB code was written specifically to perform the computational steps. Similar discretization methods have been used and validated in the literature for SGMD [ 25 , 36 , 37 ] and other MD configurations [ 38 , 39 ].…”

Section: Sgmd Of Nacl-water Solutions Across Capillary Bundles: Model...mentioning

confidence: 99%

The Role of the Morphological Characterization of Multilayer Hydrophobized Ceramic Membranes on the Prediction of Sweeping Gas Membrane Distillation Performances

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In SGMD, a sweeping gas is used on the permeate side as a carrier to remove vapor or collect vapor from the membrane surface [ 56 , 57 , 58 ]. As with air gap membrane distillation, the flow of gas reduces heat loss and significantly increases mass transfer.…”

Section: Membrane Distillation Configurationsmentioning

confidence: 99%

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

et al. 2021

View full text Add to dashboard Cite

Membrane distillation (MD) is a rapidly developing field of research and finds applications in desalination of water, purification from nonvolatile substances, and concentration of various solutions. This review presents data from recent studies on the MD process, MD configuration, the type of membranes and membrane hydrophobization. Particular importance has been placed on the methods of hydrophobization and the use of track-etched membranes (TeMs) in the MD process. Hydrophobic TeMs based on poly(ethylene terephthalate) (PET), poly(vinylidene fluoride) (PVDF) and polycarbonate (PC) have been applied in the purification of water from salts and pesticides, as well as in the concentration of low-level liquid radioactive waste (LLLRW). Such membranes are characterized by a narrow pore size distribution, precise values of the number of pores per unit area and narrow thickness. These properties of membranes allow them to be used for more accurate water purification and as model membranes used to test theoretical models (for instance LEP prediction).

show abstract

“…As shown in Figure 3d, sweeping gas membrane distillation (SGMD) is similar to AGMD. Instead of a stagnant gap of air at the permeate side, a flow of cold inert gas collects the vapor molecules in SGMD (Alqsair, Alshwairekh, Alwatban, & Oztekin, 2020). The mass transfer resistance in AGMD is dominated by Knudsen and molecular diffusion.…”

Section: Emerging Driving Force In Membrane Process For Liquid Food Cmentioning

confidence: 99%

Emerging forward osmosis and membrane distillation for liquid food concentration: A review

Pei

Gao

Sarp

et al. 2021

Comp Rev Food Sci Food Safe

View full text Add to dashboard Cite

As emerging membrane technologies, forward osmosis (FO) and membrane distillation (MD), which work with novel driving forces, show great potential for liquid food concentration, owing to their low fouling propensity and great driving force. In the last decades, they have attracted the attention of food industry scientists in global scope. However, discussions of the FO and MD in liquid food concentration advancement, membrane fouling, and economic assessment have been scant. This review aims to provide an up‐to‐date knowledge about liquid food concentration by FO and MD. First, we introduce the principle and applications of FO and MD in liquid food concentration, and highlight the effect of process on liquid food composition, membrane fouling mechanism, and strategies for fouling mitigation. Besides, economic assessment of FO and MD processes is reviewed. Moreover, the challenges as well as future prospects of FO and MD applied in liquid food concentration are proposed and discussed. Comparing with conventional membrane‐based or thermal‐based technologies, FO and MD show outstanding advantages in high concentration rate, good concentrate quality, low fouling propensity, and low cost. Future efforts for liquid food concentration by FO and MD include (1) development of novel FO draw solution (DS); (2) understanding the effects of liquid food complex compositions on membrane fouling in FO and MD concentration process; and (3) fabrication of novel membranes and innovation of membrane module and process configuration for liquid food processing.

show abstract

Computational study of sweeping gas membrane distillation process – Flux performance and polarization characteristics

Cited by 28 publications

References 81 publications

The Role of the Morphological Characterization of Multilayer Hydrophobized Ceramic Membranes on the Prediction of Sweeping Gas Membrane Distillation Performances

The Role of the Morphological Characterization of Multilayer Hydrophobized Ceramic Membranes on the Prediction of Sweeping Gas Membrane Distillation Performances

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

Emerging forward osmosis and membrane distillation for liquid food concentration: A review

Contact Info

Product

Resources

About