Development of a photocatalytic zirconia-titania ultrafiltration membrane with anti-fouling and self-cleaning properties

Zeolite Imidazolate Frameworks-8@SiO2–ZrO2 Crystal–Amorphous Hybrid Core–Shell Structure as a Building Block for Water Purification Membranes

“…Many of these contaminants of emerging concerns are recalcitrant to the traditional biological treatments, requiring the polishing of urban WWTP effluents by tertiary treatment. A range of technologies has been proposed for this scope, including advanced oxidation processes (e.g., ozonation, fenton, and photocatalysis), − adsorption, and membrane filtration. , In this context, NF has been showing great potential for the polishing of wastewater treatment plans alone and integrated with advanced oxidation. , In this study, we conducted tests using an urban wastewater plant effluent (TOC = 50 mg L –1 ). The effluent was sparked with 1 ppm trimethoprim (TMP), which is a widely prescribed antibiotic and is here utilized as a model pollutant.…”

Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review

“…It was found that nearly 77% of plasmids were able to escape at the aperture of 40 nm, and the removal rate of plasmids improved to 99.9% when the molecular weight of 20 kDa was intercepted [ 46 , 47 ]. Coelho et al synthesized a photocatalytic ultrafiltration membrane (Ce-Y-ZrO 2 /TiO 2 ) on ZrO 2 SiC carrier by the sol–gel method, and found that the molecular retention was about 19 kDa, which is equivalent to a 6 nm aperture [ 48 ]. Riquelme Breazeal et al also reported that when the retention molecular weight was controlled at 1 kDa and 10 kDa, the removal rates of eARGs were 4.2 log and 3.6 log, respectively [ 49 ].…”

Application of BiVO4/TiO2/CNT Composite Photocatalysts for Membrane Fouling Control and Photocatalytic Membrane Regeneration during Dairy Wastewater Treatment

“…Membrane fouling restricts the application of membranes by increasing operating costs and decreasing their lifetime [1]. Many strategies have been developed to prevent fouling, such as optimizing operational conditions [8], functionalization with polymers [9,10], and incorporating nanoparticles [11] and catalysts [8,[12][13][14][15][16]. Recently, several catalytic polymeric membranes have been reported as possessing antifouling [12,13] and self-cleaning properties [12,17] and the ability to degrade pollutants [17,18].…”

“…Many strategies have been developed to prevent fouling, such as optimizing operational conditions [8], functionalization with polymers [9,10], and incorporating nanoparticles [11] and catalysts [8,[12][13][14][15][16]. Recently, several catalytic polymeric membranes have been reported as possessing antifouling [12,13] and self-cleaning properties [12,17] and the ability to degrade pollutants [17,18]. Such benefits can be realized by combining filtration and advanced oxidation processes (AOP).…”

“…Numerous attempts have been made to dope TiO 2 -based semiconductors to address the problems described above. These attempts include doping with various metals such as Ag [20,21], Au, Pt [20], and zirconia (ZrO 2 ) [12], as well as non-metals such as graphene [22] and GO [1]. Carbon nanotubes (CNTs) have also received considerable attention due to their outstanding properties, such as high stiffness, flexibility, thermal and electrical conductivities, and large specific surface area.…”