Planning of smart gating membranes for water treatment

Bandehali, Samaneh; Parvizian, Fahime; Hosseini, S.M.; Matsuura, Takeshi; Drioli, Enrico; Shen, Jiangnan; Moghadassi, Abdolreza; Adeleye, Adeyemi S.

doi:10.1016/j.chemosphere.2021.131207

Cited by 46 publications

(15 citation statements)

References 123 publications

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“…[107][108][109][110][111] Gating is a promising application as a method of simple operation with high stability. [112][113][114] The synergy between the inherent property (surface wettability and geometry) and external elds (thermal, stretch, electric and magnetic eld, etc.) enables dynamically adjustable selective liquid penetration and separation.…”

Section: Intelligent Responsementioning

confidence: 99%

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Zhang

et al. 2022

Nanoscale Adv.

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Section: Intelligent Responsementioning

confidence: 99%

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Zhang

et al. 2022

Nanoscale Adv.

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“…The proposed smart-gated NWFs featured a well-defined (2–3 fold in ∼2 min) shift in permeability; in contrast, NWFs without GONP did not exhibit IR-enabled transport regulation. These results set the stage for the future development of multistimuli-responsive textiles applicable to the manufacturing and delivery of biologics and biotherapeutics and the development of next-generation microfluidics and microreactors for cell/tissue engineering. , …”

Section: Introductionmentioning

confidence: 95%

“…In contrast, they contract when the temperature exceeds the LCST/VPTT. These smart-gated membranes have found many applications, 12 including energy storage devices, 13,14 controlled small molecule release, 15 biological separations, 16 water treatment, 17 molecular recognition, 18 molecular separation, 19 self-cleaning membranes, 20 thermoregulatory devices, 21 Smart-gated systems rely on engineered substrates with accurately controlled morphology. Chen et al 22 and Xie et al 23 demonstrated the fabrication of thermoresponsive membranes using plasma-induced graft polymerization of poly(N-isopropylacrylamide) (PNIPAm) on nylon-6 and porous polyvinylidene fluoride membranes.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, they contract when the temperature exceeds the LCST/VPTT. These smart-gated membranes have found many applications, including energy storage devices, , controlled small molecule release, biological separations, water treatment, molecular recognition, molecular separation, self-cleaning membranes, thermoregulatory devices, etc.…”

Section: Introductionmentioning

confidence: 99%

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Nonwoven Membranes with Infrared Light-Controlled Permeability

Ramesh

Davis

Roros

et al. 2022

ACS Appl. Mater. Interfaces

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This study presents the development of the first composite nonwoven fiber mats (NWFs) with infrared light-controlled permeability. The membranes were prepared by coating polypropylene NWFs with a photothermal layer of poly(N-isopropylacrylamide) (PNIPAm)-based microgels impregnated with graphene oxide nanoparticles (GONPs). This design enables “photothermal smart-gating” using light dosage as remote control of the membrane’s permeability to electrolytes. Upon exposure to infrared light, the GONPs trigger a rapid local increase in temperature, which contracts the PNIPAm-based microgels lodged in the pore space of the NWFs. The contraction of the microgels can be reverted by cooling from the surrounding aqueous environment. The efficient conversion of infrared light into localized heat by GONPs coupled with the phase transition of the microgels above the lower critical solution temperature (LCST) of PNIPAm provide effective control over the effective porosity, and thus the permeability, of the membrane. The material design parameters, namely the monomer composition of the microgels and the GONP-to-microgel ratio, enable tuning the permeability shift in response to IR light; control NWFs coated with GONP-free microgels displayed thermal responsiveness only, whereas native NWFs showed no smart-gating behavior at all. This technology shows potential toward processing temperature-sensitive bioactive ingredients or remote-controlled bioreactors.

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“…Since membrane is a key element in the MBR process, enhancement of surface hydrophilicity plays an important role on fouling and permeate flux reduction. So far, various methods have been developed to enhance surface hydrophilicity of the polymeric membranes such as physical blending with hydrophilic polymers, blending of inorganic fillers, plasma treatment, and grafting and cross‐linking hydrophilic components to the membrane surface (Akbari et al, 2016; Ismail et al, 2020; Johari et al, 2020; Bandehali et al, 2021). Amini et al (2017) applied silica nanoparticles to enhance hydrophilicity and minimize fouling of high‐density polyethylene (HDPE) nanocomposite membranes for treating industrial wastewater through a MBR process.…”

Section: Introductionmentioning

confidence: 99%

Oily wastewater treatment by blend polyether imide‐sulfonated poly (ether ether keton) hollow fibre membrane through a side‐stream MBR process

Mehdi

Mansourizadeh

Ghaedi

et al. 2022

Water & Environment J

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The blend polyether imide‐sulfonated poly (ether ether keton) (PEI‐sPEEK) hollow fibre membrane was prepared for oily wastewater treatment of the natural gas liquid plant (NGL‐900, Gachsaran, Iran) through a side‐stream membrane bioreactor (MBR) process. Using PEI/sPEEK ratio of 90/10, a good compatibility of PEI and sPEEK polymers was achieved by DSC analysis. The modified membrane showed an open structure with large finger‐likes, overall porosity of about 80% and mean surface pore size of 10 nm. In addition, the membrane hydrophilicity significantly improved as water contact angle reduced from about 82° to 58°. In the MBR process, the improved membrane presented oil rejection, COD, TSS and turbidity reduction of about 99.9%, 99.7%, 98.9%, and 99.7%, respectively. The membrane showed a good antifouling property with flux recovery ratio (FRR) of 80.2% where the cake filtration was the dominant fouling mechanism. The modified membrane can be a promising alternative for treatment of industrial oily wastewater due to the enhanced properties.

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Planning of smart gating membranes for water treatment

Cited by 46 publications

References 123 publications

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Nonwoven Membranes with Infrared Light-Controlled Permeability

Oily wastewater treatment by blend polyether imide‐sulfonated poly (ether ether keton) hollow fibre membrane through a side‐stream MBR process

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