Production of drinking water from saline water by air-gap membrane distillation using polyvinylidene fluoride nanofiber membrane

Feng, Chao; Khulbe, K.C.; Matsuura, Takeshi; Gopal, Renuga; Kaur, Sharon; Ramakrishna, Seeram; Khayet, M.

doi:10.1016/j.memsci.2007.12.026

Cited by 281 publications

(128 citation statements)

References 17 publications

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“…Feng et al [275] investigated the processing of PVDF nano-fibers and desalination of 3.5 wt % NaCl solution with salt rejection rates between 98.7% and 99.9%. The morphology of electro-spun membranes ( Figure 23) is highly suitable for membranes in MD.…”

Section: Electro-spun Membranesmentioning

confidence: 99%

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Advances in Membrane Distillation for Water Desalination and Purification Applications

Camacho

Dumée

Zhang

et al. 2013

Water

642

342

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Membrane distillation is a process that utilizes differences in vapor pressure to permeate water through a macro-porous membrane and reject other non-volatile constituents present in the influent water. This review considers the fundamental heat and mass transfer processes in membrane distillation, recent advances in membrane technology, module configurations, and the applications and economics of membrane distillation, and identifies areas that may lead to technological improvements in membrane distillation as well as the application characteristics required for commercial deployment. Keywordsa function of temperature, vapor pressure, and of the gas molecular mass K 0 membrane characteristic defined by Equation (9) Kn Knudsen number K(T) a function of temperature and molecular weight of the gas l mean free path of the molecules l m distance between parallel spacer fibres (m) LEP Limit Entry Pressure (kPa) M molecular mass (g/mol) M w molecular weights of water (g/mol) M a molecular weights of air (g/mol) n number of CNTs per unit cross section in bucky-paper P pressure in the air gap (kPa) half time to reach the maximum intensity-laser flash technique (s) t proportion of conductive heat (balance due to evaporative heat) loss through the membrane T mean temperature in the pores (K)

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Section: Electro-spun Membranesmentioning

confidence: 99%

“…The degradation induced by the plasma reduced the contact angle but also permanently grafted amine and amide groups, resulting from radicalisation of the stream gas on the membrane surface. [275]; the scale bar corresponds to 10 µm.…”

Section: Modified Commercial Membranesmentioning

confidence: 99%

Advances in Membrane Distillation for Water Desalination and Purification Applications

Camacho

Dumée

Zhang

et al. 2013

Water

642

342

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“…12,[32][33] More recently, electrospinning has been used to fabricate MD membranes. 8,34 Electrospinning is a simple and versatile method for producing nonwoven sheets of fibers in which the diameters of both the fibers and the spaces between them are reduced by one to two orders of magnitude relative to conventional fiber-based filters and membranes. [35][36][37] The fibers can be spun into structures having high porosity, small pore size and high surface-to-volume ratio.…”

Section: -31mentioning

confidence: 99%

Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition

Guo

Servi

Liu

et al. 2015

ACS Appl. Mater. Interfaces

137

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Fibrous membranes of poly(trimethyl hexamethylene terephthalamide) (PA6(3)T) were fabricated by electrospinning and rendered hydrophobic by applying a conformal coating of poly-(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) using initiated chemical vapor deposition (iCVD). A set of iCVD-treated electrospun PA6(3)T fiber membranes with fiber diameters ranging from 0.25 to 1.8 µm were tested for desalination using the air gap membrane distillation configuration. Permeate fluxes of 2 to 11 kg/m 2 /hr were observed for temperature differentials of 20 °C to 45 °C between the feed stream and condenser plate, with rejections in excess of 99.98%. The liquid entry pressure was observed to increase dramatically, from 15 to 373 kPa with reduction in fiber diameter. Contrary to expectation, for a given feed temperature the permeate flux was observed to increase for membranes of decreasing fiber diameter. The results for permeate flux and salt rejection show that it is possible to construct membranes for membrane distillation even from intrinsically hydrophilic materials after surface modification by iCVD, and that the fiber diameter is shown to play an important role on the membrane distillation performance in terms of permeate flux, salt rejection, and liquid entry pressure.

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“…Compared with the traditional MD membranes, the electrospun nanofiber membranes (ENM) promise more interesting advantages for MD application to obtain higher permeate flux. Since Feng et al 26 [33][34] Incorporating NPs into electrospun nanofibers or hollow fibers has been recently heavily pursued to impart functionalities to membranes. [35][36][37][38] Metallic NPs such as silver and gold have been employed as antimicrobial agents to reduce biofouling of membranes.…”

Section: Introductionmentioning

confidence: 99%

Engineering Hydrophobic Organosilica Nanoparticle-Doped Nanofibers for Enhanced and Fouling Resistant Membrane Distillation

Hammami

Croissant

Francis

et al. 2017

ACS Appl. Mater. Interfaces

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Engineering and scaling-up new materials for better water desalination are imperative to find alternative fresh water sources to meet future demands. Herein, the fabrication of hydrophobic polyetherimide composite nanofiber membranes doped with novel ethylenepentafluorophenylene-based periodic mesoporous organosilica nanoparticles is reported for enhanced and fouling resistant membrane distillation. Novel organosilica nanoparticles were homogeneously incorporated into electrospun nanofiber membranes depicting a proportional increase of hydrophobicity to the particle contents. Direct contact membrane distillation experiments on the organosilica-doped membrane with only 5 % doping showed an increase of flux of 140 % compared to commercial membranes. The high porosity of organosilica nanoparticles was further utilized to load the eugenol antimicrobial agent which produced a dramatic enhancement of the anti-biofouling properties of the membrane of 70 % after 24 h.

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Production of drinking water from saline water by air-gap membrane distillation using polyvinylidene fluoride nanofiber membrane

Cited by 281 publications

References 17 publications

Advances in Membrane Distillation for Water Desalination and Purification Applications

Advances in Membrane Distillation for Water Desalination and Purification Applications

Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition

Engineering Hydrophobic Organosilica Nanoparticle-Doped Nanofibers for Enhanced and Fouling Resistant Membrane Distillation

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