Evaluation of the pore size distribution of a forward osmosis membrane in three different ways

Fang, Yanyan; Bian, Lixia; Bi, Qincheng; Li, Qian; Wang, Xiaolin

doi:10.1016/j.memsci.2013.12.046

Cited by 76 publications

(42 citation statements)

References 30 publications

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“…The applications of FO process can be classified as in Figure 6. The FO membrane rejects particles, pathogens, and emerging substances with an average porosity of 0.25-0.37 nm [40]. FO is also able to reject high levels of salt that cannot be achieved by normal treatment systems, and the total dissolved solids (TDS) from complex water can effectively be removed [41].…”

Section: Application Areas Of Forward Osmosis Membranesmentioning

confidence: 99%

Forward Osmosis Membranes – A Review: Part II

Eyvaz¹,

Arslan²,

İmer³

et al. 2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

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Forward osmosis (FO) is a technical term describing the natural phenomenon of osmosis: the transport of water molecules across a semipermeable membrane by osmotic pressure from a feed solution (FS) to a draw solution (DS). The diluted DS is then reconcentrated to recycle the draw solutes as well as to produce purified water. As the driving force is only the osmotic pressure difference between two solutions, meaning that there is no need to apply an external energy, this results in low fouling propensity of membrane and minimization of irreversible cake forming, which are the main problems controverted by membrane applications, especially in biological treatment systems (e.g., FO membrane bioreactor (FO-MBR)). The purpose of the book chapter is to bring an overview on the FO membrane manufacturing, characterizing and application area at laboratory or full scales. This book chapter is published in two parts. In the second part, which appears here, characterization of mass transport in FO membranes, fouling mechanisms and foulants on FO membranes in naturally asymmetric structure and application areas of FO membranes in the literature are mentioned. Cutting-edge technologies on FO studies are comprehensively reviewed and following major and minor titles are stated truly on the new technologies.

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Section: Application Areas Of Forward Osmosis Membranesmentioning

confidence: 99%

Forward Osmosis Membranes – A Review: Part II

Eyvaz¹,

Arslan²,

İmer³

et al. 2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

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“…Because water permeation is a natural process with relatively low flux, FO is advantageous over conventional membrane technologies such as reverse osmosis, nanofiltration and ultrafiltration, in terms of fouling propensity and energy efficiency (Zhao et al, 2012). Meanwhile, the small pore size (average pore radius 0.25-0.30 nm) of FO membrane can guarantee rejection of a wide range of contaminants (Fang et al, 2014). When wastewater is used as a feed solution and saline water (e.g.…”

Section: Integrating Fo Membranes In Besmentioning

confidence: 99%

Integrating membrane filtration into bioelectrochemical systems as next generation energy-efficient wastewater treatment technologies for water reclamation: A review

Yuan

2015

Bioresource Technology

136

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Bioelectrochemical systems (BES) represent an energy-efficient approach for wastewater treatment, but the effluent still requires further treatment for direct discharge or reuse. Integrating membrane filtration in BES can achieve high-quality effluents with additional benefits. Three types of filtration membranes, dynamic membrane, ultrafiltration membrane and forward osmosis membrane that are grouped based on pore size, have been studied for integration in BES. The integration can be accomplished either in an internal or an external configuration. In an internal configuration, membranes can act as a separator between the electrodes, or be immersed in the anode/cathode chamber as a filtration component. The external configuration allows BES and membrane module to be operated independently. Given much progress and interest in the integration of membrane filtration into BES, this paper has reviewed the past studies, described various integration methods, discussed the advantages and limitations of each integration, and presented challenges for future development.

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“…The pore size and pore size distribution of the prepared membranes were determined by solute transport experiments according to the method described in references [33][34][35].…”

Section: Porosity and Pore Size Analysismentioning

confidence: 99%