Studies on performances of membrane, draw solute and modeling of forward osmosis process in desalination – a review

Subramani, Sobana; Panda, Rames C.; Panda, Bidisha

doi:10.5004/dwt.2017.20480

Cited by 4 publications

(2 citation statements)

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“…Forward osmosis (FO) is considered a technology for water desalination and the reuse of wastewater with great potential [ 1 , 2 , 3 , 4 , 5 ]. The forward osmosis process uses an electrolyte of high osmotic pressure (draw electrolyte) to drive the water molecules through a membrane from the waste or seawater instead of the high pressure pumps used in the standard reverse osmosis (RO).…”

Section: Introductionmentioning

confidence: 99%

Effect of the Sodium Polyacrylate on the Magnetite Nanoparticles Produced by Green Chemistry Routes: Applicability in Forward Osmosis

Zufia-Rivas

Morales

Veintemillas-Verdaguer

2018

Nanomaterials

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Aqueous dispersions of magnetic nanocomposites have been proposed as draw electrolytes in forward osmosis. One possible approach for the production of nanocomposites based on magnetite nanoparticles and sodium polyacrylate is the synthesis of the magnetic iron oxide by coprecipitation or oxidative precipitation in the presence of an excess of the polymer. In this work, we explored the effect of the polymer proportion on the nanomaterials produced by these procedures. The materials obtained were compared with those obtained by the coating of magnetite nanocrystals produced beforehand with the same polymer. The samples were characterized by chemical analysis, photon correlation spectroscopy, thermogravimetry, X-ray diffraction, infrared spectroscopy, transmission electron microscopy, and magnetometry. The general trend observed is that the polymers heavily modify the texture of the magnetic material during the synthesis, with a drastic reduction of the particle size and magnetic response. The polycrystalline texture that is generated permits the incorporation of the polymer both on the external surface and in the intergranular space. The aqueous dispersions of the nanocomposites were highly stable, with a hydrodynamic size that was roughly independent of the polymer/magnetite ratio. Such dispersions show an osmotic pressure that is proportional to the concentration of the polymer. Interestingly, the proportionality constant was similar to that of the free polymer only in the case of the samples prepared by oxidative precipitation, being lower in the case of the samples prepared by coprecipitation. Finally, the possibilities of using these materials as draw electrolytes in forward osmosis will be briefly discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of the Sodium Polyacrylate on the Magnetite Nanoparticles Produced by Green Chemistry Routes: Applicability in Forward Osmosis

Zufia-Rivas

Morales

Veintemillas-Verdaguer

2018

Nanomaterials

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“…They both affect the osmotic pressure between the two substrates as either making the FS and DS more diluted or concentrated at the membrane surface compared with the bulk concentration. The details on this concentration polarization (CP) are described elsewhere [21][22][23]. Eventually, there should be eight equations with three unknowns for each test.…”

Section: Single-stage Methodsmentioning

confidence: 99%

Comparison of the intrinsic parameters (A, B, and S) of a forward osmosis membrane using pressurized and non-pressurized methods

Aziz

Rahman

Nizam

et al. 2018

Desalination and Water Treatment

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Forward osmosis research trends in desalination and wastewater treatment: A review of research trends over the past decade

Ang

Mohammad

Johnson

et al. 2019

Journal of Water Process Engineering

139

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Issues of water scarcity and water security have driven the rapid development of various technologies to ensure water sustainability. The forward osmosis (FO) membrane process has been widely recognized as one of the more promising technologies to play an important role in alleviating the issues of water sustainability. Extensive research has been carried out worldwide to explore the potential of FO in desalination, water and wastewater treatment and reclamation. It is of the utmost importance to understand the topics of interest and research trends to further advance the development of FO process technology. In this study, a bibliometric analysis based on the Scopus database was carried out to identify and understand the global research trends of FO process based on 6 main analyses: basic growth trends, journals, countries, institutions, authors, and keywords. A total of 1462 article records published between 1967-2018 were extracted from Scopus and used as the raw data for bibliometric analysis using VOSviewer software. The total number of FO articles has sharply increased since 2009 and stabilized at around 250 publications in the past three years. The increase could be associated with the breakthrough in FO membrane science, where the contributions were from the 5 most productive countries: USA, China, Singapore, Australia, and South Korea. FO research started to diversify after the appearance of commercial FO membranes with improved characteristics, enabling the researchers to employ them for various application studies. Keywords analysis showed that the main directions of FO research could be categorized into three clusters: application of FO, membrane fouling study, and FO membrane synthesis. These bibliometric results provide a valuable reference and information on current research directions of FO for researchers and industry practitioners who are interested in FO technology.

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Studies on performances of membrane, draw solute and modeling of forward osmosis process in desalination – a review

Cited by 4 publications

References 0 publications

Effect of the Sodium Polyacrylate on the Magnetite Nanoparticles Produced by Green Chemistry Routes: Applicability in Forward Osmosis

Effect of the Sodium Polyacrylate on the Magnetite Nanoparticles Produced by Green Chemistry Routes: Applicability in Forward Osmosis

Comparison of the intrinsic parameters (A, B, and S) of a forward osmosis membrane using pressurized and non-pressurized methods

Forward osmosis research trends in desalination and wastewater treatment: A review of research trends over the past decade

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