Hydrocarbon degradation and separation of bilge water via a novel TiO2-HNTs/PVDF-based photocatalytic membrane reactor (PMR)

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14147-14155 ◽  
Author(s):  
A. Moslehyani ◽  
A. F. Ismail ◽  
M. H. D. Othman ◽  
T. Matsuura
Keyword(s):  
Titanium Dioxide ◽  
Polyvinylidene Fluoride ◽  
Membrane Reactor ◽  
Halloysite Nanotubes ◽  
Hydrocarbon Degradation ◽  
Pvdf Membrane ◽  
Bilge Water ◽  
Flat Sheet ◽  
Photocatalytic Membrane Reactor

This paper focuses on the potential of a novel flat sheet nanocomposite titanium dioxide (TiO2)-halloysite nanotubes (HNTs)/polyvinylidene fluoride (PVDF) membrane as a photocatalytic separator in the photocatalytic membrane reactor (PMR).

Novel hybrid photocatalytic reactor-UF nanocomposite membrane system for bilge water degradation and separation

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 45331-45340 ◽  
Author(s):  
A. Moslehyani ◽  
A. F. Ismail ◽  
M. H. D. Othman ◽  
Arun M. Isloor
Keyword(s):  
Polyvinylidene Fluoride ◽  
Membrane Reactor ◽  
Membrane System ◽  
Nanocomposite Membrane ◽  
Halloysite Nanotube ◽  
Photocatalytic Reactor ◽  
Water Degradation ◽  
Bilge Water ◽  
Photocatalytic Membrane Reactor

Bilge water degradation and separation via a hybrid photocatalytic membrane reactor based on a polyvinylidene fluoride (PVDF)/halloysite nanotube clay (HNTs) nanocomposite membrane has been achieved by this study.

scholarly journals Performance Evaluation and Kinetic Analysis of Photocatalytic Membrane Reactor in Wastewater Treatment

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 276
Author(s):  
Zeyad Zeitoun ◽  
Ahmed H. El-Shazly ◽  
Shaaban Nosier ◽  
Mohamed R. Elmarghany ◽  
Mohamed S. Salem ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Membrane Reactor ◽  
Membrane Distillation ◽  
Pseudo First Order Reaction ◽  
Pvdf Membrane ◽  
Feed Tank ◽  
Photocatalytic Reactor ◽  
Two Phases ◽  
Membrane Cell ◽  
Photocatalytic Membrane Reactor

The objectives of the current study are to assess and compare the performance of a developed photocatalytic membrane reactor (PMR) in treating industrial waste (e.g., organic dye waste) against membrane distillation. The current PMR is composed of a feed tank, which is a continuous stirred photocatalytic reactor containing slurry Titanium dioxide (TiO2) particles that are activated by using ultraviolet lamp irradiation at a wavelength of 365 nm, and a poly-vinylidene flouride (PVDF) membrane cell. The experimental setup was designed in a flexible way to enable both separate and integrated investigations of the photocatalytic reactor and the membrane, separately and simultaneously. The experimental work was divided into two phases. Firstly, the PVDF membrane was fabricated and characterized to examine its morphology, surface charge, and hydrophobicity by using a scanning electron microscope, surface zeta potential, and contact angle tests, respectively. Secondly, the effects of using different concentrations of the TiO2 photocatalyst and feed (e.g., dye concentration) were examined. It is found that the PMR can achieve almost 100% dye removal and pure permeate is obtained at certain conditions. Additionally, a kinetic analysis was performed and revealed that the photocatalytic degradation of dye follows a pseudo-first-order reaction.

scholarly journals Tailoring the Effects of Titanium Dioxide (TiO2) and Polyvinyl Alcohol (PVA) in the Separation and Antifouling Performance of Thin-Film Composite Polyvinylidene Fluoride (PVDF) Membrane

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 241
Author(s):  
Shruti Sakarkar ◽  
Shobha Muthukumaran ◽  
Veeriah Jegatheesan
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Polyvinyl Alcohol ◽  
Polyvinylidene Fluoride ◽  
Photocatalytic Performance ◽  
Film Coating ◽  
Thin Film Coating ◽  
Pvdf Membrane ◽  
Film Composite ◽  
Thin Film Composite

In this study, thin-film composite (TFC) polyvinylidene fluoride (PVDF) membranes were synthesized by coating with titanium dioxide (TiO2)/polyvinyl alcohol (PVA) solution by a dip coating method and cross-linked with glutaraldehyde. Glutaraldehyde (GA) acted as a cross-linking agent to improve the thermal and chemical stability of the thin film coating. The incorporation of TiO2 in the film enhanced the hydrophilicity of the membrane and the rejection of dyes during filtration. The layer of TiO2 nanoparticles on the PVDF membranes have mitigated the fouling effects compared to the plain PVDF membrane. The photocatalytic performance was studied at different TiO2 loading for the photodegradation of dyes (reactive blue (RB) and methyl orange (MO)). The results indicated that the thin film coating of TiO2/PVA enhanced photocatalytic performance and showed good reusability under UV irradiation. This study showed that nearly 78% MO and 47% RB were removed using the TFC membrane. This work provides a new vision in the fabrication of TFC polymeric membranes as an efficient wastewater treatment tool.

scholarly journals Enhancing the Antibacterial Properties of PVDF Membrane by Hydrophilic Surface Modification Using Titanium Dioxide and Silver Nanoparticles

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 289
Author(s):  
Kajeephan Samree ◽  
Pen-umpai Srithai ◽  
Panaya Kotchaplai ◽  
Pumis Thuptimdang ◽  
Pisut Painmanakul ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Polyvinylidene Fluoride ◽  
Membrane Surface ◽  
Antimicrobial Property ◽  
Antibacterial Properties ◽  
Water Contact ◽  
Pvdf Membrane ◽  
E Coli ◽  
Coated Membranes ◽  
Coating Time

This work investigates polyvinylidene fluoride (PVDF) membrane modification to enhance its hydrophilicity and antibacterial properties. PVDF membranes were coated with nanoparticles of titanium dioxide (TiO2-NP) and silver (AgNP) at different concentrations and coating times and characterized for their porosity, morphology, chemical functional groups and composition changes. The results showed the successfully modified PVDF membranes containing TiO2-NP and AgNP on their surfaces. When the coating time was increased from 8 to 24 h, the compositions of Ti and Ag of the modified membranes were increased from 1.39 ± 0.13 to 4.29 ± 0.16 and from 1.03 ± 0.07 to 3.62 ± 0.08, respectively. The water contact angle of the membranes was decreased with increasing the coating time and TiO2-NP/AgNP ratio. The surface roughness and permeate fluxes of coated membranes were increased due to increased hydrophilicity. Antimicrobial and antifouling properties were investigated by the reduction of Escherichia coli cells and the inhibition of biofilm formation on the membrane surface, respectively. Compared with that of the original PVDF membrane, the modified membranes exhibited antibacterial efficiency up to 94% against E. coli cells and inhibition up to 65% of the biofilm mass reduction. The findings showed hydrophilic improvement and an antimicrobial property for possible wastewater treatment without facing the eminent problem of biofouling.

Pd/TiO2 doped faujasite photocatalysts for acetophenone transfer hydrogenation in a photocatalytic membrane reactor

2017 ◽  
Vol 353 ◽  
pp. 152-161 ◽  
Author(s):  
Cristina Lavorato ◽  
Pietro Argurio ◽  
Teresa F. Mastropietro ◽  
Giuseppe Pirri ◽  
Teresa Poerio ◽  
...  
Keyword(s):  
Membrane Reactor ◽  
Transfer Hydrogenation ◽  
Photocatalytic Membrane Reactor
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