Nanomaterials Incorporated Membranes for Oil–Water Separation

Razak, Nurina Adriana Abdul; Fuzil, Nurul Syazana; Jamal, Nur Ain Shazwani Roslee Ab.; Othman, Nur Hidayati; Alias, Nur Hashimah; Shahruddin, Munawar Zaman; Sayuthi, Muhammad Shafiq Mat; Ismail, Ahmad Fauzi; Lau, Woei Jye; Sean, Goh Pei; Tripathi, Bijay P.

doi:10.1021/bk-2022-1407.ch003

Cited by 2 publications

(2 citation statements)

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“…Several nanoparticles have been investigated for the fabrication of antifouling membranes, including carbon-, silver-, silica-, aluminum-, titanium-, and magnesium-based nanoparticles [ 15 , 17 ]. Nanomaterial-modified membranes could result in improved physicochemical properties, increased permeability, less fouling, or better performance over a wider temperature and pH range [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Among the nanoparticles, titanium dioxide (TiO 2 ) is one of the most investigated materials [ 6 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ] due to its hydrophilic nature, chemical stability, availability, and photocatalytic activity (which provides the possibility of preparing self-cleaning membrane surfaces). The beneficial effects of TiO 2 -based membrane modification have been proved in relation to both surface coating [ 18 , 19 , 21 , 22 , 23 , 25 ] and blending [ 17 , 20 , 28 , 29 ] methods. Carbon nanotubes (CNTs) also have a growing interest in the field of advanced membranes, which exhibit high flux, selectivity, and low-fouling properties even against biofouling [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Outstanding Separation Performance of Oil-in-Water Emulsions with TiO2/CNT Nanocomposite-Modified PVDF Membranes

et al. 2023

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Membrane filtration is an effective technique for separating micro- and nano-sized oil droplets from harmful oil-contaminated waters produced by numerous industrial activities. However, significant flux reduction discourages the extensive application of this technology; therefore, developing antifouling membranes is necessary. For this purpose, various titanium dioxide/carbon nanotube (TiO2/CNT) nanocomposites (containing 1, 2, and 5 wt.% multi-walled CNTs) were used for the modification of polyvinylidene fluoride (PVDF) ultrafilter (250 kDa) membrane surfaces. The effects of surface modifications were compared in relation to the flux, the filtration resistance, the flux recovery ratio, and the purification efficiency. TiO2/CNT2% composite modification reduced both irreversible and total filtration resistances the most during the filtration of 100 ppm oil emulsions. The fluxes were approximately 4–7 times higher compared to the unmodified PVDF membrane, depending on the used transmembrane pressure (510, 900, and 1340 L/m2h fluxes were measured at 0.1, 0.2, and 0.3 MPa pressures, respectively). Moreover, the flux recovery ratio (up to 68%) and the purification efficiency (95.1–99.8%) were also significantly higher because of the surface modification, and the beneficial effects were more dominant at higher transmembrane pressures. TiO2/CNT2% nanocomposites are promising to be applied to modify membranes used for oil–water separation and achieve outstanding flux, cleanability, and purification efficiency.

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