Photocatalytic-membrane technology: a critical review for membrane fouling mitigation

Nasrollahi, Nazanin; Ghalamchi, Leila; Vatanpour, Vahid; Khataee, Alireza

doi:10.1016/j.jiec.2020.09.031

Cited by 139 publications

(47 citation statements)

References 228 publications

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“…Furthermore, membrane filtration can only trap contaminants in a high concentration retentate, which requires additional post-treatment prior to discharge. In contrast, photocatalytic membrane processes may degrade contaminants in feed solutions by producing oxygen-reactive radicals in the presence of UV light, preventing the formation of a cake layer on the membrane surface [3,45]. As a result, pore blocking is reduced, pollutant concentrations in the filtrate are reduced, and permeate quality is improved [3,45].…”

Section: Integrated Photocatalytic Membrane (Ipm) Reactorsmentioning

confidence: 99%

“…In contrast, photocatalytic membrane processes may degrade contaminants in feed solutions by producing oxygen-reactive radicals in the presence of UV light, preventing the formation of a cake layer on the membrane surface [3,45]. As a result, pore blocking is reduced, pollutant concentrations in the filtrate are reduced, and permeate quality is improved [3,45]. This section delves into the different types of membranes used as supports as well as related photocatalytic membrane types, preparation, attributes and applications of TiO 2 photocatalytic membranes in removing contaminants in wastewater settings.…”

Section: Integrated Photocatalytic Membrane (Ipm) Reactorsmentioning

confidence: 99%

“…This has inspired interest in making TiO 2 -engineered membranes for a variety of applications, including self-cleaning, antimicrobial thin film coatings, photocatalysis, gas sensing and dye-sensitized solar cell nanofibers with well-controlled morphology [25,26,[87][88][89][90]. One-dimensional freestanding TiO 2 membrane reactors with various TiO 2 morphologies, such as nanotubes (NTs), nanofibers (NFs), and nanowires (NWs), have been developed to improve photocatalytic activity and reduce membrane fouling [31,45].…”

Section: Freestanding Pure Tio 2 -Based Membrane Reactorsmentioning

confidence: 99%

“…cell nanofibers with well-controlled morphology [25,26,[87][88][89][90]. One-dimensional freestanding TiO2 membrane reactors with various TiO2 morphologies, such as nanotubes (NTs), nanofibers (NFs), and nanowires (NWs), have been developed to improve photocatalytic activity and reduce membrane fouling [31,45].…”

Section: Tio 2 Nanotube-based Reactorsmentioning

confidence: 99%

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Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

et al. 2021

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Global accessibility to clean water has stressed the need to develop advanced technologies for the removal of toxic organic and inorganic pollutants and pathogens from wastewater to meet stringent discharge water quality limits. Conventionally, the high separation efficiencies, relative low costs, small footprint, and ease of operation associated with integrated photocatalytic-membrane (IPM) technologies are gaining an all-inclusive attention. Conversely, photocatalysis and membrane technologies face some degree of setbacks, which limit their worldwide application in wastewater settings for the treatment of emerging contaminants. Therefore, this review elucidated titanium dioxide (TiO2), based on its unique properties (low cost, non-toxicity, biocompatibility, and high chemical stability), to have great potential in engineering photocatalytic-based membranes for reclamation of wastewater for re-use. The environmental pathway of TiO2 nanoparticles, membranes and configuration types, modification process, characteristics, and applications of IPMs in water settings are discussed. Future research and prospects of magnetized TiO2-based membrane technology is highlighted as a viable water purification technology to mitigate fouling in the membrane process and photocatalyst recoverability. In addition, exploring life cycle assessment research would also aid in utilizing the concept and pressing for large-scale application of this technology.

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Section: Integrated Photocatalytic Membrane (Ipm) Reactorsmentioning

confidence: 99%

Section: Integrated Photocatalytic Membrane (Ipm) Reactorsmentioning

confidence: 99%

Section: Freestanding Pure Tio 2 -Based Membrane Reactorsmentioning

confidence: 99%

Section: Tio 2 Nanotube-based Reactorsmentioning

confidence: 99%

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Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

et al. 2021

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“…However, due to these membranes' intrinsic hydrophobicity, it is usually fouled by organic hydrophobic fouling in a long-term operation [3]. Membrane fouling is caused by the deposition and adsorption of foulants (particles, colloids, macromolecules such as proteins, polysaccharides, organic pollutants, microorganisms, inorganic salts) on the membrane surfaces or inside the pores [4][5][6][7]. This leads to a decreasing in the permeate flux, a change in selectivity and separability of the membrane, and affecting membrane life [3].…”

Section: Introductionmentioning

confidence: 99%

Visible light driven photocatalytic coating of PAA plasma-grafted PVDF membrane by TiO2 doped with lanthanum recovered from waste fluorescent powder

Nguyen

Guo

You

et al. 2021

Environmental Engineering Research

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In this study, the PDVF membranes were fabricated with a La-doped TiO 2 (La-TiO 2 ) photocatalytic coating in which La element was recovered from the waste fluorescent powder. The process of La element recovery was investigated under different conditions with different acid concentrations. La-TiO 2 photocatalysts were facilely synthesized by the solvothermal method at 80°C followed by thermal sintering at 400°C. The La-TiO 2 photocatalytic membrane fabrication was carried out by dip-coating the polyacrylic acid (PAA) plasma-grafted PVDF membrane into the suspension La-TiO 2 . The waste fluorescent powder was characterized by X-Ray Photoelectron Spectroscopy (XPS) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) after dissolving in the aqua regia. The La-TiO 2 photocatalysts were characterized by Fourier-Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), and Scanning Electron Microscopy (SEM). The La-TiO 2 coated PVDF membrane was used to study the filtration and visible light driven photocatalytic degradation of Reactive Blue 5 solution. The experimental results showed that La-TiO 2 possesses high photocatalytic activity (efficiency of 100% after 6-h irradiation), and the best membrane (La-TiO 2 /PAA/PVDF) performance (efficiency of 87%) with the water contact angle of 11.4⁰ was achieved. Thereby, it showed that the La-TiO 2 photocatalytic membranes were successfully fabricated with antifouling, self-cleaning properties.

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Selected Advanced Oxidation Processes for Wastewater Remediation

Chaukura

Madzokere

Tshabalala

2023

Photoreactors in Advanced Oxidation Processes

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Photocatalytic-membrane technology: a critical review for membrane fouling mitigation

Cited by 139 publications

References 228 publications

Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

Visible light driven photocatalytic coating of PAA plasma-grafted PVDF membrane by TiO2 doped with lanthanum recovered from waste fluorescent powder

Selected Advanced Oxidation Processes for Wastewater Remediation

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