Preparation and performance evaluation of cellulose acetate/nanodiamond nanocomposite membrane in the treatment of pharmaceutical wastewater by membrane bioreactor

Etemadi, Habib; Yegani, Reza; Seyfollahi, Mahdi; Babaeipour, Valiollah

doi:10.5004/dwt.2017.20653

Cited by 13 publications

(12 citation statements)

References 79 publications

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“…In fact, the efficient filtration area and the antifouling performance improved when a higher roughness was achieved [49]. This trend can be interpreted as follows: when higher TMP conditions are applied, the transport of particles and foulants to the membrane surface and the accumulated layer should become more compact and less permeable than under subcritical conditions [25,36]. As demonstrated in Fig.…”

Section: Morphological Properties Of Membranesmentioning

confidence: 81%

“…The flux exponentially decreased from 13.5 to 12.4 L m −2 h −1 , when the imposed TMP reached 0.2 bar. This trend can be interpreted as follows: when higher TMP conditions are applied, the transport of particles and foulants to the membrane surface and the accumulated layer should become more compact and less permeable than under subcritical conditions , .…”

Section: Resultsmentioning

confidence: 99%

“…The total fouling ratio ( TFR ), reversible fouling ratio ( RFR ), and irreversible fouling ratio ( IFR ) were calculated using Eqs. – , :

true RFR (%) = \frac{J_{normalw 2} - J_{normalHA}}{J_{normalw 1}} \times 100

true IFR (%) = \frac{J_{normalw 1} - J_{normalw 2}}{J_{normalw 1}} \times 100

true TFR (%) = FRF (%) + IFR (%) = \frac{J_{normalw 1} - J_{normalHA}}{J_{normalw 1}} \times 100

…”

Section: Methodsmentioning

confidence: 99%

“…The total fouling ratio (TFR), reversible fouling ratio (RFR), and irreversible fouling ratio (IFR) were calculated using Eqs. (4)- (6) [36,37]:…”

Section: Membrane Fouling Analysismentioning

confidence: 99%

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Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

et al. 2020

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A novel polycarbonate (PC) membrane was modified with titanium dioxide via nonsolvent-induced phase separation method to improve its hydrophilicity and antifouling properties in a submerged membrane system for the removal of humic acid (HA) both with and without polyaluminum chloride (PAC) coagulant. The effect of TiO 2 additive on the morphology and performance of the nanocomposite membranes was studied by atomic force microscopy, field emission scanning electron microscopy, energy dispersive X-ray, mechanical properties, water contact angle, porosity, pure water flux, rejection tests, and antifouling parameters. The obtained results revealed that a higher critical flux was achieved by the PC/TiO 2 nanocomposite membrane. The flux recovery ratio of the neat PC membrane increased with the addition of TiO 2 nanoparticles and without PAC coagulant. HA removal for the PC nanocomposite membrane was higher than that of the neat PC membrane with and without PAC coagulant.

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Section: Morphological Properties Of Membranesmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

“…The total fouling ratio ( TFR ), reversible fouling ratio ( RFR ), and irreversible fouling ratio ( IFR ) were calculated using Eqs. – , :

true RFR (%) = \frac{J_{normalw 2} - J_{normalHA}}{J_{normalw 1}} \times 100

true IFR (%) = \frac{J_{normalw 1} - J_{normalw 2}}{J_{normalw 1}} \times 100

true TFR (%) = FRF (%) + IFR (%) = \frac{J_{normalw 1} - J_{normalHA}}{J_{normalw 1}} \times 100

…”

Section: Methodsmentioning

confidence: 99%

“…The total fouling ratio (TFR), reversible fouling ratio (RFR), and irreversible fouling ratio (IFR) were calculated using Eqs. (4)- (6) [36,37]:…”

Section: Membrane Fouling Analysismentioning

confidence: 99%

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Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

et al. 2020

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“…From the figure 9a represents the percentage efficiency graph, and 9b and 9c illustrates the InC 0 / C, maximum adsorption efficiency (q e ) Vs Time. [55]…”

Section: Water Uptake (Wu) Ratio and Swelling Ratio (Sr)mentioning

confidence: 99%

Cellulose Acetate (CA) Membrane Tailored with Fe₃O₄@ZnO Core Shell Nanoparticles: Fabrication, Structural analysis and Its Adsorption Analysis

2021

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Cellulose acetate polymer membrane was fabricated with Fe3O4@ZnO core‐shell nanoparticles through phase inversion technique to enhance the hydrophilic &antifouling properties. The morphology, crystallinity, porosity and surface area of the core shell nanoparticles incorporated membrane were examined using X‐Ray Diffraction (XRD), Fourier‐transform infrared spectroscopy (FT‐IR), High‐resolution scanning electron microscopy (HR‐SEM), High‐resolution transmission electron microscopy (HR‐TEM) /Energy Dispersive X‐ray analysis (EDX) studies. The contact angle measurement and wettability test prove the improvement of the hydrophilicity of the membrane with the addition of nanocomposite materials. Adsorption test were performed with the of model dyes such as Congo red (Anionic dye) and Malachite Green (Cationic dye) were investigated using Ultraviolet‐visible spectroscopy. The adsorption percentage against Congo Red (CR) and for Malachite green (MG) were found to be 93 % and 70 % respectively. Kinetic studies exhibits the rate of the reaction, for CR dye it shows R2=0.9471 and R2=0.8609 for MG dye, which obeys the pseudo first order reaction. In addition, the adsorption isotherm model as Langmuir shows that KI values are 0.00338(L/mg) and 0.0486(L/mg) respectively. Desorption studies exhibits the maximum desorption of dye for Congo red is 89 % and 83 % for Malachite Green.In a recyclability process, membrane material adsorbs 90 % of Congo red dye and 63 % of Malachite green dye.

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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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Preparation and performance evaluation of cellulose acetate/nanodiamond nanocomposite membrane in the treatment of pharmaceutical wastewater by membrane bioreactor

Cited by 13 publications

References 79 publications

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

Cellulose Acetate (CA) Membrane Tailored with Fe₃O₄@ZnO Core Shell Nanoparticles: Fabrication, Structural analysis and Its Adsorption Analysis

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

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Preparation and performance evaluation of cellulose acetate/nanodiamond nanocomposite membrane in the treatment of pharmaceutical wastewater by membrane bioreactor

Cited by 13 publications

References 79 publications

Synthesis and Characterization of Polycarbonate/TiO2 Ultrafiltration Membranes: Critical Flux Determination

Synthesis and Characterization of Polycarbonate/TiO2 Ultrafiltration Membranes: Critical Flux Determination

Cellulose Acetate (CA) Membrane Tailored with Fe3O4@ZnO Core Shell Nanoparticles: Fabrication, Structural analysis and Its Adsorption Analysis

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

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Product

Resources

About

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

Cellulose Acetate (CA) Membrane Tailored with Fe₃O₄@ZnO Core Shell Nanoparticles: Fabrication, Structural analysis and Its Adsorption Analysis