Self-cleaning behavior of nanocomposite membrane induced by photocatalytic WO3 nanoparticles for landfill leachate treatment

Shafaei, Nader; Jahanshahi, Mohsen; Peyravi, Majid; Najafpour, Qasem

doi:10.1007/s11814-016-0154-y

Cited by 28 publications

(3 citation statements)

References 49 publications

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“…After 120 min, the reactor was turned off and the vials were aged in dark condition and ambient temperature. The Aqua Lytic spectrometer (Germany) at 600 nm was used to determine the absorbance of the compounds [21]. The COD removal rate was calculated by the following equation:…”

Section: Photodegradation Propertymentioning

confidence: 99%

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

Zakeritabar

Jahanshahi

Peyravi

et al. 2020

J Environ Health Sci Engineer

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Cerium fluoride (CeF 3 ) nanoparticles (NPs) were synthesized and applied in polysulfone (PS) membrane fabricated by phase inversion method. The produced nanocomposite membranes (PS/CeF 3 ) with different contents of CeF3 NPS (0.25%, 0.5%, 0.75% and 1% w/w) were used to treat pharmaceutical wastewaters. The membranes were characterized by FESEM, EDX, XRD, FTIR, porosity, and water contact angle analyses. Evaluation of the characteristics and performance of the nanocomposite membranes confirmed that utilizing photocatalytic CeF 3 NPs in membrane structure could effectively decompose organic contaminants in pharmaceutical wastewaters. It also improves the hydrophilicity and antifouling ability of membrane during filtration especially, in the presence of UV irradiation. The permeate flux of the PS membrane increased from 35.1 to 63.77 l/m 2 h by embedding 0.75% of CeF 3 NPs in membrane structure due to the porosity enhancement from 71.36-78.42% and the decrease in contact angle from 62.9º to 53.73º. Moreover, the flux decline of PS/CeF 3 -0.75% membrane under UV irradiation was from 63.6 to 46.1 l/m 2 h that considerably lower than that of the neat PS membrane (from 34.7 to 4.9). On the other hand, the degradation efficiency of PS/CeF 3 -0.75% membrane was more than 97%, and COD removed was more than 65% while they were 75% and 31%, respectively for the nascent PS membrane. Therefore, applying the appropriate amount of CeF 3 NPs in PS membranes not only greatly increased the permeate flux but also significantly enhanced the degradation efficiency and COD removal. This indicates that nanocomposite membranes can be confidently applied for pharmaceutical wastewater treatment UV irradiation.

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Section: Photodegradation Propertymentioning

confidence: 99%

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

Zakeritabar

Jahanshahi

Peyravi

et al. 2020

J Environ Health Sci Engineer

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“…Other photocatalysts such as ZnO [65], WO 3 [95], CuO/ZnO [96] were also used in PMR system. Hairom et al [65] synthesized four types of ZnO via different procedures.…”

Section: Structures and Properties Of Photocatalystmentioning

confidence: 99%

Photocatalytic Membrane Reactors (PMRs) in Water Treatment: Configurations and Influencing Factors

et al. 2017

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Abstract:The lack of access to clean water remains a severe issue all over the world. Coupling photocatalysis with the membrane separation process, which is known as a photocatalytic membrane reactor (PMR), is promising for water treatment. PMR has developed rapidly during the last few years, and this paper presents an overview of the progress in the configuration and operational parameters of PMRs. Two main configurations of PMRs (PMRs with immobilized photocatalyst; PMRs with suspended photocatalyst) are comprehensively described and characterized. Various influencing factors on the performance of PMRs, including photocatalyst, light source, water quality, aeration and membrane, are detailed. Moreover, a discussion on the current problems and development prospects of PMRs for practical application are presented.

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“…The distinct advantages of polymeric membranes include good film‐forming ability, ease of use (lack of sealing problem), high aspect ratio (surface‐to‐volume one), unique surface characteristics, ease of industrial fabrication, facility to scale up, low capital and repair cost . The desirable polymeric membranes for filtration treatment should be of high selectivity, high flux, and have excellent antifouling properties , . In order to successfully apply the membrane processes in landfill leachate treatment, membranes should be specialized and their properties must be controlled by modification procedures.…”

Section: Introductionmentioning

confidence: 99%

Potential of Advanced Nano‐structured Membranes for Landfill Leachate Treatment: A Review

et al. 2018

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Rapid expansion of the world population has brought about serious water shortage problems in many countries around the world, especially developing countries. Treatment of leachate produced by landfilling municipal waste has recently been the focus of attention by both researchers and governments. This work therefore has been dedicated to comprehensively review all membrane separation techniques applied in leachate treatment and to introduce innovative modification of membranes in commercial applications. As reported in the literature, ultrafiltration membranes are the most common membranes that are made by commercial polyethersulfone, polysulfone, and poly (vinylidene fluoride) in full and pilot scale of MBR process. However, membrane fouling is an important drawback in the membrane processes. Towards this end, most emphasis has been given to the membrane modification by commercial membrane‐forming polymers as a cost‐effective technique of tailoring membranes for large‐scale industrial applications and to increase hydrophilicity and fouling‐resistant properties.

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Self-cleaning behavior of nanocomposite membrane induced by photocatalytic WO3 nanoparticles for landfill leachate treatment

Cited by 28 publications

References 49 publications

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

Photocatalytic Membrane Reactors (PMRs) in Water Treatment: Configurations and Influencing Factors

Potential of Advanced Nano‐structured Membranes for Landfill Leachate Treatment: A Review

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