Preparation of TiO self-assembled polymeric nanocomposite membranes and examination of their fouling mitigation effects in a membrane bioreactor system

Bae, Tae‐Hyun; Tak, Tae‐Moon

doi:10.1016/j.memsci.2005.08.014

Cited by 126 publications

(56 citation statements)

References 13 publications

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“…However, the pure water permeability was much lower than that of UF membranes, currently employed in MBRs [12]. Bae and Tak prepared TiO 2 embedded polymeric membranes by a self-assembly process and applied them to the filtration of MBR sludge [13,14]. TiO 2 embedded membrane shows less fouling propensity due to higher hydrophilicity compared to virgin membranes and it can be applied in membrane modification for fouling control in MBRs.…”

Section: Introductionmentioning

confidence: 99%

“…In general, the research strategy for reducing fouling should address development of low fouling membranes with much narrower pore size distributions, stronger hydrophilicity and larger porosity than the currently used membranes. But none of the above mentioned modified membranes have been scaled up so far due to some significant drawbacks, such as a complicated manufacturing process, increased production costs, complex surface chemistry of modified membranes [7][8][9][10], process limitations [13][14] and very low permeability [11].…”

Section: Introductionmentioning

confidence: 99%

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Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Deowan

Galiano

Hoinkis

et al. 2016

Journal of Membrane Science

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a b s t r a c tA novel antifouling coating of ultrafiltration (UF) commercial membranes, based on a polymerisable bicontinuous microemulsion (PBM) technique, was developed and tested for the first time in a membrane bioreactor (MBR) using an artificial model textile dye wastewater and compared with a commercial uncoated UF membrane. The results showed that the commercial MBR module faced severe fouling problems whereas the novel coated PBM MBR module reduced the fouling significantly. The analysis of fouling rate using a resistance model confirms that PBM coated membrane has a higher antifouling effect. The antimicrobial properties of the PBM membrane contributed by polymerisable cationic surfactant acryloyloxyundecyltriethylammonium bromide (AUTEAB) guaranteed an anti-biofouling effect preventing the growth of microorganisms on the membrane surface. In addition, the PBM MBR module showed 10 71% higher blue dye removal efficiency and a similar rate of COD removal efficiency of about 957 1% compared to commercial module. However, water permeability was slightly lower due to extra resistance of the PBM coating. Root mean squared (RMS) roughness measurement and analysis of AFM images confirmed that the stable novel membrane coating still existed and showed antimicrobial effect even after 105 days of operation. The results obtained demonstrated the potential of the low fouling PBM membrane.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Deowan

Galiano

Hoinkis

et al. 2016

Journal of Membrane Science

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“…Nanoscale TiO 2 is widely used in many commercial products, including sunscreens, surface coatings, and food additives (Fisher and Egerton 2001;Kaida et al 2004). These properties lead to its widespread use in paints, cosmetics, self-cleaning materials, or waste water treatments (Bae and Tak 2005).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of larvicidal activity of green synthesized titanium dioxide nanoparticles using Mangifera indica extract against blood-feeding parasites

Rajakumar¹,

Rahuman²,

Roopan

et al. 2014

Parasitol Res

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Titanium dioxide nanoparticles (TiO2 NPs) are considered to be among the best photocatalytic materials due to their long-term thermodynamic stability, strong oxidizing power, and relative non-toxicity. Nano-preparations with TiO2 NPs are currently under investigation as novel treatments for acne vulgaris, recurrent condyloma acuminata, atopic dermatitis, hyperpigmented skin lesions, and other non-dermatologic diseases. The present study was to investigate the acaricidal and larvicidal activity of synthesized TiO2 NPs utilizing leaf aqueous extract of Mangifera indica L. (Anacardiaceae) against hematophagous parasites. The anti-parasitic activity of TiO2 NPs against the larvae of Rhipicephalus (Boophilus) microplus, Hyalomma anatolicum anatolicum and Haemaphysalis bispinosa (Acari: Ixodidae), fourth instar larvae of Anopheles subpictus, and Culex quinquefasciatus (Diptera: Culicidae) were assessed. The green synthesized TiO2 NPs were analyzed by UV-Vis, FTIR, X-ray diffraction (XRD), AFM, SEM, and TEM. The XRD analysis of synthesized TiO2 NPs revealed the dominant peak at 2θ value of 27.81 which matched the 110 crystallographic plane of the rutile structure indicating the crystal structure. The FTIR spectra exhibited a prominent peak at 3,448 cm(-1) and showed OH stretching due to the alcoholic group, and the OH group may act as a capping agent. The SEM images of TiO2 NPs displayed spherical, oval in shape, individual, and some in aggregates. Characterization of the synthesized TiO2 NPs using AFM offered three-dimensional visualization and uneven surface morphology. The TEM micrograph showed agglomerates, round and slight elongation with an average size of 30 ± 5 nm. The maximum efficacy was observed in synthesized TiO2 NPs against the larvae of R. microplus, Hyalomma anatolicum anatolicum, Haemaphysalis bispinosa, A. subpictus, and Culex quinquefasciatus with LC50 value of 28.56, 33.17, 23.81, 5.84, and 4.34 mg/L, respectively. In the present study, a novel, simple, and eco-friendly approach has been suggested to control blood-feeding parasites.

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“…This has been achieved by applying NH 3 or CO 2 plasma treatment (Yu et al, 2003;Yu et al, 2007), addition and coating of TiO 2 nanoparticle into the polymer casting solutions and onto the membrane surfaces, respectively (Bae et al, 2006;Bae & Tak, 2005), coating ferric hydroxide onto the membrane surfaces (Zhang et al, 2008), coating an amphiphilic graft copolymer poly(vinylidene fluoride)-graft-poly(oxyethylene) methacrylate (PVDFg-POEM) (Asatekin et al, 2006), or grafting polyacrylamide (Yu et al, 2007).…”

Section: Membranementioning

confidence: 99%

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

Bilad

2017

IJOST

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Membrane bioreactors (MBRs) have recently become widely accepted as an advanced technology for treatment of domestic and industrial wastewaters. The objective of this review is to provide overview on MBR technology for wastewater treatment application. It includes discussions on the fundamental, core problems (membrane fouling), recent effective development approach (dynamic filtration systems) and future research direction of MBRs. Since MBRs integrate a conventional activated sludge process with membrane filtration, and both fundamental aspects are discussed first. Later, a comprehensive discussion about membrane fouling, the main problems in MBR, is provided, including fouling control strategies. The discussion on the MBR membranes and relation between membrane properties and MBR performance is also provided. This review also includes one of the most promising MBR technologies that specifically design to manage membrane fouling: dynamic filtration systems. Lastly, insight into an approach to address MBRs challenges and recent research and developments are provided.

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Preparation of TiO self-assembled polymeric nanocomposite membranes and examination of their fouling mitigation effects in a membrane bioreactor system

Cited by 126 publications

References 13 publications

Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Efficacy of larvicidal activity of green synthesized titanium dioxide nanoparticles using Mangifera indica extract against blood-feeding parasites

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

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