Application of PVDF/HDTMA-modified clinoptilolite nanocomposite membranes in removal of reactive dye from aqueous solution

Hosseinifard, Seyed Mehdi; Aroon, Mohammad Ali; Dahrazma, Behnaz

doi:10.1016/j.seppur.2020.117294

Cited by 38 publications

(11 citation statements)

References 52 publications

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“…Clinoptilolite is a natural zeolite of the aluminosilicate type and is a member of the structural family of heulandite [24]. It is the cheapest type of zeolites, containing an alkali metal and structural water, and it is assumed to be a suitable carrier for photocatalysts used in many industries, to improve their photocatalytic properties [25,26]. Hosseinifard et al [25] investigated the effects of clinoptilolite nanoparticles on the performance of PVDF membranes for the removal of a reactive dye from an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

“…It is the cheapest type of zeolites, containing an alkali metal and structural water, and it is assumed to be a suitable carrier for photocatalysts used in many industries, to improve their photocatalytic properties [25,26]. Hosseinifard et al [25] investigated the effects of clinoptilolite nanoparticles on the performance of PVDF membranes for the removal of a reactive dye from an aqueous solution. They concluded that, by adding modified clinoptilolite nanoparticles to the PVDF membranes, the hydrophilicity and dye rejection increased, while the permeability of the membranes decreased.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Transmembrane Pressure on Antifouling Properties of PVC/Clinoptilolite Ultrafiltration Nanocomposite Membranes

et al. 2022

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Novel polyvinyl chloride (PVC)/clinoptilolite nanocomposite membranes for water treatment were fabricated by non‐solvent‐induced phase separation and characterized with respect to their hydrophilicity, porosity, surface roughness, thermal stability, and surface and cross‐sectional morphology. All prepared membranes were evaluated in a submerged system for the removal of humic acid (HA) under various vacuum transmembrane pressure (TMP) conditions. The hydrophilicity, porosity, and thermal stability of the membranes were increased by the addition of 0.5 wt % clinoptilolite nanoparticles. A larger macrovoid appeared when clinoptilolite nanoparticles were added to the PVC membrane. Higher TMP leads to serious fouling and the formation of a thicker foulant layer on the membrane surface as well as less removal of HA.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Transmembrane Pressure on Antifouling Properties of PVC/Clinoptilolite Ultrafiltration Nanocomposite Membranes

et al. 2022

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“…The porosity of the membrane was determined following the dry–wet weight method, which involved calculating the weight difference (between wet and dry membranes) as a function of the membrane weight [ 33 ]. The average pore radius (r m ) on the membranes was examined based on the filtration rate method and calculated based on the Guerout–Elford–Ferry equation [ 34 , 35 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Benzalkonium Chloride Contents on Structures, Properties, and Ultrafiltration Performances of Chitosan-Based Nanocomposite Membranes

et al. 2022

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The effects of benzalkonium chloride (BKC) contents on the structure, properties, and ultrafiltration performance of chitosan-based nanocomposite membranes containing poly(ethylene glycol) and multi-walled carbon nanotube (chitosan/BKC/PEG/CNT) were examined. The membranes were prepared by a mixing solution method and phase inversion before being characterized with microscopic techniques, tensile tests, thermogravimetric analysis, water contact angle, and porosity measurements. The performance of the nanocomposite membranes in regard to permeability (flux) and permselectivity (rejection) was examined. The results show that the incorporation of BKC produced nanocomposite membranes with smaller pore structures and improved physico-chemical properties, such as an increase in porosity and surface roughness (Ra = 45.15 to 145.35 nm and Rq = 53.69 to 167.44 nm), an enhancement in the elongation at break from 45 to 109%, and an enhancement in the mechanical strength from 31.2 to 45.8 MPa. In contrast, a decrease in the membrane hydrophilicity (water contact angle increased from 56.3 to 82.8°) and a decrease in the average substructure pore size from 32.64 to 10.08 nm were observed. The membrane rejection performances toward Bovine Serum Albumin (BSA) increased with the BKC composition in both dead-end and cross-flow filtration processes. The chitosan/BKC/PEG/CNT nanocomposite membranes have great potential in wastewater treatments for minimizing biofouling without reducing the water purification performance.

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“…The Guerout-Elford-Ferry equation [ 39 , 54 , 55 , 58 , 59 , 60 , 61 ] was used to calculate the mean pore radius of the membranes (r), and the results were multiplied by two to calculate the membrane pore sizes (diameter, d = 2r):

where ε is the calculated porosity, η w is the viscosity of water at room temperature (0.00089 Pa s), ΔP is the operation pressure (Pa), J is the measured pure water permeation flux (m 3 m −2 s −1 ), and l is the membrane thickness (m).…”

Section: Methodsmentioning

confidence: 99%

Statistical Analysis of Synthesis Parameters to Fabricate PVDF/PVP/TiO2 Membranes via Phase-Inversion with Enhanced Filtration Performance and Photocatalytic Properties

et al. 2021

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Non-solvent induced phase-inversion is one of the most used methods to fabricate membranes. However, there are only a few studies supported by statistical analysis on how the different fabrication conditions affect the formation and performance of membranes. In this paper, a central composite design was employed to analyze how different fabrication conditions affect the pure water flux, pore size, and photocatalytic activity of polyvinylidene fluoride (PVDF) membranes. Polyvinylpyrrolidone (PVP) was used to form pores, and titanium dioxide (TiO2) to ensure the photocatalytic activity of the membranes. The studied bath temperatures (15 to 25 °C) and evaporation times (0 to 60 s) did not significantly affect the pore size and pure water flux of the membranes. The concentration of PVDF (12.5 to 17.5%) affected the viscosity, formation capability, and pore sizes. PVDF at high concentrations resulted in membranes with small pore sizes. PVP affected the pore size and should be used to a limited extent to avoid possible hole formation. TiO2 contents were responsible for the decolorization of a methyl orange solution (10−5 M) up to 90% over the period studied (30 h). A higher content of TiO2 did not increase the decolorization rate. Acidic conditions increased the photocatalytic activity of the TiO2-membranes.

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Application of PVDF/HDTMA-modified clinoptilolite nanocomposite membranes in removal of reactive dye from aqueous solution

Cited by 38 publications

References 52 publications

Effect of Transmembrane Pressure on Antifouling Properties of PVC/Clinoptilolite Ultrafiltration Nanocomposite Membranes

Effect of Transmembrane Pressure on Antifouling Properties of PVC/Clinoptilolite Ultrafiltration Nanocomposite Membranes

Effects of Benzalkonium Chloride Contents on Structures, Properties, and Ultrafiltration Performances of Chitosan-Based Nanocomposite Membranes

Statistical Analysis of Synthesis Parameters to Fabricate PVDF/PVP/TiO2 Membranes via Phase-Inversion with Enhanced Filtration Performance and Photocatalytic Properties

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