Surface modification of polyamide RO membrane for improved fouling resistance

Jee, Ki Yong; Shin, Dong Ho; Lee, Yong Taek

doi:10.1016/j.desal.2016.05.013

Cited by 48 publications

(15 citation statements)

References 24 publications

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“…The improvement of surface hydrophilicity can protects membrane from hydrophobic foulants, since membranes with high hydrophilicity are insusceptible to hydrophobic foulants. 28,29 Surface Morphology Analysis The morphology of prepared membranes was investigated by scanning electron microscopy (SEM) before RO performance tests. The surface images of unmodified and THAM grafted membranes are shown in Figure 8.…”

Section: Surface Hydrophilicitymentioning

confidence: 99%

Tris(hydroxymethyl)aminomethane polyamide thin‐film‐composite antifouling reverse osmosis membrane

Chen

Zhang

et al. 2017

J of Applied Polymer Sci

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For the applications of reverse osmosis (RO) process, membrane fouling caused by organic molecule adsorption is still a serious problem which significantly decreases membrane lifespan and increases operation costs. In this present article, we report the thin film composite (TFC) RO membrane functionalized with tris(hydroxymethyl)aminomethane (THAM) using one‐step method for improved antifouling property. The results of surface characterization indicated that THAM was successfully grafted onto the active layer of membrane by covalent linkage. Mult‐hydroxyl‐layer was generated and remained steadily on TFC membrane surface after modification. The contact angle decreased from 75.9 ± 3.0° to 46.9 ± 2.3°, which showed a distinct improvement of membrane surface hydrophilicity after modification. The grafted THAM improved water flux by 28.3%, while salt rejection was almost unchanged in membrane property tests. The modified membranes presented preferable antifouling property to foulants of bovine serum albumin, sodium alginate, and dodecyl trimethyl ammonium bromide than that of pristine membranes during dynamic fouling experiments. The method in this study provided an effective way to improve antifouling property of the polyamide thin‐film‐composite RO membrane. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45891.

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Section: Surface Hydrophilicitymentioning

confidence: 99%

Tris(hydroxymethyl)aminomethane polyamide thin‐film‐composite antifouling reverse osmosis membrane

Chen

Zhang

et al. 2017

J of Applied Polymer Sci

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“…There are a number of ways to increase membrane surface smoothness as well as hydrophilic property, such as surface modifications, novel materials and synthesis process, etc. Surface modification is a very common strategy used to reduce membrane fouling (Cheng et al, 2013;Jee et al, 2016). For example, using low pressure plasma technique, Reis et al introduced amine functionalities onto the surface of commercial polyamide TFC membranes, and then silver nanoparticles were attached to this amine rich TFC membranes, which shown improved antimicrobial property.…”

Section: Surface Modificationmentioning

confidence: 99%

“…GPPTMS SG The GPPTMS-modified membranes shown enhanced resistance to casein fouling (Jee et al, 2016).…”

Section: Dmaema Cbma Sgmentioning

confidence: 99%

A review of reverse osmosis membrane fouling and control strategies

Jiang

Li²

2017

Science of The Total Environment

753

362

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Reverse osmosis (RO) membrane technology is one of the most important technologies for water treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to higher operating pressure, flux decline, frequent chemical cleaning and shorter membrane life. This paper reviews membrane fouling types and fouling control strategies, with a focus on the latest developments. The fundamentals of fouling are discussed in detail, including biofouling, organic fouling, inorganic fouling and colloidal fouling. Furthermore, fouling mitigation technologies are also discussed comprehensively. Pretreatment is widely used in practice to reduce the burden for the following RO operation while real time monitoring of RO has the advantage and potential of providing support for effective and efficient cleaning. Surface modification could slow down membrane fouling by changing surface properties such as surface smoothness and hydrophilicity, while novel membrane materials and synthesis processes build a promising future for the next generation of RO membranes with big advancements in fouling resistance. Especially in this review paper, statistical analysis is conducted where appropriate to reveal the research interests in RO fouling and control.Graphic Abstract

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“…In this approach, only one variable (control factor) is changed systematically in each experiment while keeping other variables constant. In order to avoid the drawbacks of the above approach, such as low chance of determining the optimum condition and inability in identifying the covariance between influential parameters, some authors have exploited the benefits of experimental design approaches to study the effect of simultaneous changes of synthesis conditions on morphology, and permeation properties of TFCs . For example, Khorshidi and coworkers used the Taguchi experimental design to investigate the effect of simultaneous changes of synthesis conditions, including monomers concentrations, reaction time, and heat curing temperature on surface morphology and permeation properties of TFC membranes.…”

Section: Introductionmentioning

confidence: 99%

Optimization of water flux and salt rejection properties of polyamide thin film composite membranes

Azizi

Sharif

2019

J of Applied Polymer Sci

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Optimizing synthesis factors of polyamide top layers is an important requirement in the design of thin film composite (TFC) membranes. In this research, the top layer fabrication method (conventional, heat curing, and spin coating), type of acid acceptor (sodium carbonate, sodium hydroxide, and triethylamine), type of organic phase solvent (hexane, heptane, and mixed hexane/heptane), and concentration of surfactant sodium dodecyl sulfate (0, 0.5, and 1 wt %) are selected as the control parameters of this synthesis and optimized using the Taguchi approach. The analysis of variance shows that the layer fabrication method is the most influential parameter on water flux and salt (NaCl) rejection of TFCs. Furthermore, although the type of organic solvent has not a significant contribution to the water flux, it is another significant factor affecting the rejection. The optimized membrane is then used to construct structureproperty relationships and to understand the influence of each individual factor on the desalination performance. Accordingly, a TFC membrane with the top layer fabricated by the heat curing method, in the presence of Na 2 CO 3 as the acid acceptor, hexane as the organic phase solvent and 0.5 wt % of the surfactant is prepared that shows water permeance of 2.73 L m −2 h −1 bar −1 and NaCl rejection of 98.1%. centration demonstrated the importance of these parameters in the preparation process of TFCs. The same group recently studied the synergistic effects of different additives on desalination properties of PA-TFC membranes. 23 The additives, which Additional Supporting Information may be found in the online version of this article.

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Surface modification of polyamide RO membrane for improved fouling resistance

Cited by 48 publications

References 24 publications

Tris(hydroxymethyl)aminomethane polyamide thin‐film‐composite antifouling reverse osmosis membrane

Tris(hydroxymethyl)aminomethane polyamide thin‐film‐composite antifouling reverse osmosis membrane

A review of reverse osmosis membrane fouling and control strategies

Optimization of water flux and salt rejection properties of polyamide thin film composite membranes

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