Fouling Mitigation by TiO2 Composite Membrane in Membrane Bioreactors

Su, Yu; Huang, Chihpin; Pan, Jill-Ruhsing; Hsieh, Wen‐Pin; Chu, Min Chia

doi:10.1061/(asce)ee.1943-7870.0000419

Cited by 23 publications

(8 citation statements)

References 18 publications

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“…This work inspired many researchers to investigate NPs-MBR systems for wastewater treatment. For instance, Su et al 103 explored a similar approach using a TiO 2 composite membrane in the MBR system. The presence of TiO 2 NPs coated on the membranes improved the surface hydrophilicity and reduced membrane fouling than the virgin membrane.…”

Section: Nanoparticles Membrane Bioreactor (Nps-mbr)mentioning

confidence: 99%

A critical review on nanomaterials membrane bioreactor (NMs-MBR) for wastewater treatment

et al. 2020

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The concept of nanomaterials membranes (NMs) promises to be a sustainable route to improve the membrane characteristics and enhance the performance of membrane bioreactors (MBRs) treating wastewater. This paper provided a critical review of recent studies on the use of membranes incorporating nanomaterials in membrane bioreactor (NMs-MBR) applications for wastewater treatment. Novel types of nanomaterials membranes were identified and discussed based on their structural morphologies. For each type, their design and fabrication, advances and potentialities were presented. The performance of NMs-MBR system has been summarized in terms of removal efficiencies of common pollutants and membrane fouling. The review also highlighted the sustainability and cost viability aspects of NMs-MBR technology that can enhance their widespread use in wastewater treatment applications.

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Section: Nanoparticles Membrane Bioreactor (Nps-mbr)mentioning

confidence: 99%

A critical review on nanomaterials membrane bioreactor (NMs-MBR) for wastewater treatment

et al. 2020

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“…11 Many methodologies have been proposed to immobilize TiO 2 on membrane substrates: dip-coating, 15 -17 grafting, 18 -21 chemical-physical deposition, 22 physical vapor deposition, 23 sol-gel precipitation. 24 -28 among others. S Sanches et al…”

Section: Introductionmentioning

confidence: 99%

“…A good compromise between catalytic properties and the separation efficiency of membranes is currently the main point to consider when evaluating performance . Many methodologies have been proposed to immobilize TiO 2 on membrane substrates: dip‐coating, grafting, chemical–physical deposition, physical vapor deposition, sol–gel precipitation . among others.…”

Section: Introductionmentioning

confidence: 99%

“…Although removal of total organic carbon and humic acids was achieved in that study by single microfiltration and photocatalysis, the combination of the processes was reported as more effective in terms of components removal as well as anti‐fouling behavior as milder flux reduction was observed. Low stability of the films developed by sol–gel methods has, however, been reported, which raises environmental concerns …”

Section: Introductionmentioning

confidence: 99%

“…25 Although removal of total organic carbon and humic acids was achieved in that study by single microfiltration and photocatalysis, the combination of the processes was reported as more effective in terms of components removal as well as anti-fouling behavior as milder flux reduction was observed. Low stability of the films developed by sol-gel methods has, however, been reported, 24 which raises environmental concerns. 29 Magnetron sputtering, a physical vapour deposition technique, became the number one choice for the deposition of a wide range of industrial coatings due to its ability to produce high-purity and high-quality well-adhered functional films on large surface area substrates and on a large scale.…”

Section: Introductionmentioning

confidence: 99%

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Development of photocatalytic titanium dioxide membranes for degradation of recalcitrant compounds

Sanches

Nunes

Passarinho

et al. 2017

J. Chem. Technol. Biotechnol

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BACKGROUND Immobilization of TiO2 photoactive nanoparticles on a nanofiltration membrane without loss of permselectivity properties is currently a challenge. In this study, immobilization of TiO2 nanoparticles on a ceramic commercial membrane surface by direct current reactive magnetron sputtering was addressed. The best membrane was compared with an unmodified membrane and a membrane modified by a generic chemical–physical method in terms of membrane permselectivity and photocatalytic properties. RESULTS Magnetron sputtering was able to achieve similar photocatalytic activity to the chemical–physical method, where Evonik P25 TiO2 nanoparticles were used, while maintaining membrane rejection and permeability. The layer formed by magnetron sputtering exhibits uniformly distributed nanostructured columns, aligned perpendicularly to the membrane surface. Furthermore, the membrane hydrophilicity increase achieved is promising for fouling control. A shorter sputtering time and distance between the titanium target and the membrane were preferable to effectively degrade the pesticides diuron and chlorfenvinphos. Under optimum sputtering conditions, 95% and 78% increases were attained for the degradation of diuron and chlorfenvinphos, respectively, compared with the unmodified membrane. CONCLUSION The photocatalytic membranes developed are potential candidates for the simultaneous retention and photocatalytic degradation of recalcitrant micropollutants. However, if the purpose is to retain low molecular weight molecules, retentive properties should be improved. © 2016 Society of Chemical Industry

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Cellulose acetate (CA) hybrid membrane prepared by phase inversion method combined with chemical reaction with enhanced permeability and good anti‐fouling property

Bushra

Wang

Cheng

2020

J of Applied Polymer Sci

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The CA hybrid membrane with enhanced anti‐fouling property and higher permeability was prepared by nonsolvent induced phase separation method combined with chemical reaction. The impacts of different solvents (N‐methyl‐2‐pyrrolidone, N, N‐ Dimethylacetamide, Dimethyl sulfoxide and N, N‐Dimethylformamide), organic acids (citric acid/fumaric acid) and titanium dioxide (TiO2) nanoparticles (NPs) on the separation performance and thermal stability of CA hybrid membranes were investigated. Results showed that the introduction of organic acids to membrane matrix caused asymmetry in the membrane structure with more uniform pore size distribution and higher porosity (82.5%). This is attributed to the production of CO2 bubbles by a reaction between organic acid in the casting solution and salt in the coagulation bath. Meanwhile, a tremendous rise in anti‐fouling property (from 89.7% to 94%), pure water flux (from 329.7 to 821.5 L/m2 h) and permeation flux (from 265.8 to 546.3 L/m2 h) indicates a significant improvement in the hydrophilicity and the permeability of prepared membranes. In addition, a significant improvement in thermal stability (by 90°C) was achieved owing to the formation of dative bonds between TiO2 NPs and CA polymer. Therefore, this approach can significantly improve the anti‐fouling property and the separation performance of the CA membrane.

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Fouling Mitigation by TiO2 Composite Membrane in Membrane Bioreactors

Cited by 23 publications

References 18 publications

A critical review on nanomaterials membrane bioreactor (NMs-MBR) for wastewater treatment

A critical review on nanomaterials membrane bioreactor (NMs-MBR) for wastewater treatment

Development of photocatalytic titanium dioxide membranes for degradation of recalcitrant compounds

Cellulose acetate (CA) hybrid membrane prepared by phase inversion method combined with chemical reaction with enhanced permeability and good anti‐fouling property

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