Zwitterionic polymers grafted poly(ether sulfone) hollow fiber membranes and their antifouling behaviors for osmotic power generation

Cai, Tao; Xue, Li; Wan, Chunfeng; Chung, Tai‐Shung

doi:10.1016/j.memsci.2015.09.037

Cited by 116 publications

(59 citation statements)

References 59 publications

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“…The HPG grafted membranes showed good anti-fouling effects against Bovine Serum Albumin (BSA) adsorption, E. coli adhesion, and S. aureus attachment, and exhibited a high flux recovery up to 94% after cleaning and hydraulic pressure impulsion. Later, Cai et al [98] demonstrated another effective antifouling strategy by grafting zwitterionic copolymers onto the PRO membrane surfaces. The grafted membranes not only exhibited superior fouling resistance against BSA adsorption, E. coli adhesion, and S. epidermidis attachment, but also showed substantial improved M a n u s c r i p t 23 water flux recovery up to 98% in the PRO tests using real concentrated municipal wastewater.…”

Section: Figure 24mentioning

confidence: 99%

“…Generally, three strategies have been identified to mitigate the membrane fouling in PRO: (1) Pretreating the feed water to reduce the fouling potential; (2) Manipulating the structural properties of the membranes to decrease its affinity towards foulants; (3) Cleaning the membranes during operation by backwashing, chemical cleaning, osmotic shock or other methods [89][90][91][92][93][94][95][96][97][98]. A preferred antifouling strategy should effectively mitigate fouling formation without significantly increasing the operating cost of the process, which makes the development of specific antifouling PRO membranes especially attractive.…”

Section: Figure 25mentioning

confidence: 99%

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Progress in pressure retarded osmosis (PRO) membranes for osmotic power generation

Han

Zhang

Xue

et al. 2015

Progress in Polymer Science

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184

115

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Section: Figure 24mentioning

confidence: 99%

Section: Figure 25mentioning

confidence: 99%

Progress in pressure retarded osmosis (PRO) membranes for osmotic power generation

Han

Zhang

Xue

et al. 2015

Progress in Polymer Science

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184

115

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“…[104,105] Particularly,o wing to strong and stable electrostatic bonds with water, this modification approachi s viably used to improve the anti-biofouling properties of RO TFC membranes. [105][106][107] Wang et al have modified ac ommercial RO membrane with carboxybetaine methacrylate (CBMA) zwitterionicp olymer containingq uaternary ammonium cationsb yr edox-initiated graft polymerizationo fN,N'dimethylaminoethyl methacrylate (DMAEMA), followed by as urface quaternization reaction with 3-bromopropionic acid (3-BPA) to improve the water flux and biofoulingr esistance simultaneously. [104] Thew ater flux recoveryo ft he modified membrane is much higher than that of the unmodifiedR O membrane,a nd almostc omplete removal (99 %) of Gram-positivea nd Gram-negative bacteria by bacteriostasis mechanisms is observed.…”

Section: Membrane Design and Performances In Desalinationmentioning

confidence: 99%

The Water–Energy Nexus: Solutions towards Energy‐Efficient Desalination

et al. 2017

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Global water shortages across all continents have led to the explosive practice of desalination. However, desalination is undeniably recognized as one of the most energy‐intensive techniques for creating a clean and safe water supply. Cost reduction in different aspects is necessary to make desalination processes affordable and accessible. In fact, the cost of water from desalination facilities is momentously impacted by the energy requirements for water production. As the water production cost cannot be separated from the issue of energy, the desalination community is continuously seeking ways to reduce energy consumption further. Current research focuses on assessing and alleviating the major energy issues by finding ways to improve the energy efficiency of desalination facilities, which would pave the way for overall cost reduction. Improving the process and the efficiencies of materials implies improved water quality and an increase in the quantity produced per unit of energy consumed. This review highlights recent emerging approaches that aim to reduce the energy consumption and, hence, the water production cost of desalination technology. In brief, the advances made in membrane science and technology, the development of emerging desalination processes and their integrated systems, as well as the use of renewable energy and energy‐recovery systems are recognized as effective and feasible solutions towards energy‐efficient desalination to address the water crisis.

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“…To mitigate scaling, future research works may focus on (1) the removal of scaling precursors in feed streams by developing cost-effective pre-treatments such as (1) low pressure NF and RO [8], (2) exploring low cost anti-scalants [12,15], and (3) developing anti-scaling TFC hollow fiber membranes [45][46][47][48].…”

Section: Tfc Hollow Fiber Membranes Used In Real Pro Applicationsmentioning

confidence: 99%

Analysis of flux reduction behaviors of PRO hollow fiber membranes: Experiments, mechanisms, and implications

Xiong

Cheng

Wan

et al. 2016

Journal of Membrane Science

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Pressure retarded osmosis (PRO) is a promising technology to harvest renewable osmotic energy using a semipermeable membrane. However, a significant flux reduction has been always observed that severely shrinks the harvestable power to a level only marginally higher or even lower than the economically feasible value. This work focuses on the elucidation of various underlying mechanisms responsible for the flux reduction. First, both inner-selective and outer-selective thin film composite (TFC) hollow fiber membranes are employed to examine how the fundamental internal factors (such as the surface salinity of the selective layer at the feed side (C F,m) and its components) interact with one another under the fixed bulk salinity gradient, resulting in various behaviours of external performance indexes such as water flux, reverse salt flux, and power density. Then, the research is extended to investigate the effects of the growing bulk feed salinity due to the accumulated reverse salt flux along PRO modules. Finally, the insights obtained from the prior two stationary conditions are combined with the advanced nucleation theory to elucidate the dynamic scaling process by visualizing how the multiple fundamental factors (such as local supersaturation, nucleation rate and nuclei size) evolve and interplay with one another in various membrane regimes during the whole scaling process. To our best knowledge, it is the first time that the advanced nucleation theory is applied to study the PRO scaling kinetics in order to provide subtle and clear pictures of the events occurring inside the membrane. This study may provide useful insights to design more suitable TFC hollow fiber membranes and to operate them with enhanced water flux so that the PRO process may become more promising in the near future.

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Zwitterionic polymers grafted poly(ether sulfone) hollow fiber membranes and their antifouling behaviors for osmotic power generation

Cited by 116 publications

References 59 publications

Progress in pressure retarded osmosis (PRO) membranes for osmotic power generation

Progress in pressure retarded osmosis (PRO) membranes for osmotic power generation

The Water–Energy Nexus: Solutions towards Energy‐Efficient Desalination

Analysis of flux reduction behaviors of PRO hollow fiber membranes: Experiments, mechanisms, and implications

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