Effect of embedding MWCNT-g-GO with PVC on the performance of PVC membranes for oily wastewater treatment

Sadiq, Amna Jalal; Shabeeb, Kadhum M.; Khalil, Bassam I.; Alsalhy, Qusay F.

doi:10.1080/00986445.2019.1618845

Cited by 49 publications

(15 citation statements)

References 47 publications

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“…After that, the solution was filtered and washed successively with distilled water until the pH became neutral (i.e., pH = 7). The product was dried in an oven at 60 • C for 48 h [18].…”

Section: Preparation Of the Graphene Oxide (Go)mentioning

confidence: 99%

Removal of Dyes Using Graphene Oxide (GO) Mixed Matrix Membranes

et al. 2020

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The application of membrane technology to remove pollutant dyes in industrial wastewater is a significant development today. The modification of membranes to improve their properties has been shown to improve the permeation flux and removal efficiency of the membrane. Therefore, in this work, graphene oxide nanoparticles (GO-NPs) were used to modify the polyethersulfone (PES) membrane and prepare mixed matrix membranes (MMMs). This research is dedicated to using two types of very toxic dyes (Acid Black and Rose Bengal) to study the effect of GO on PES performance. The performance and antifouling properties of the new modified membrane were studied using the following: FTIR, SEM, AFM, water permeation flux, dye removal and fouling, and by investigating the influence of GO-NPs on the structure. After adding 0.5 wt% of GO, the contact angle was the lowest (39.21°) and the permeable flux of the membrane was the highest. The performance of the ultrafiltration (UF) membrane displayed a rejection rate higher than 99% for both dyes. The membranes showed the highest antifouling property at a GO concentration of 0.5 wt%. The long-term operation of the membrane fabricated from 0.5 wt% GO using two dyes improved greatly over 26 d from 14 d for the control membrane, therefore higher flux can be preserved.

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“…After that, the solution was filtered and washed successively with distilled water until the pH became neutral (i.e., pH = 7). The product was dried in an oven at 60 • C for 48 h [18].…”

Section: Preparation Of the Graphene Oxide (Go)mentioning

confidence: 99%

Removal of Dyes Using Graphene Oxide (GO) Mixed Matrix Membranes

et al. 2020

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“…Subsequently, the results showed that the HF membranes with a higher concentration of PVC were rougher than that with a lower percentage of PVC and the modified TFC HF membrane was also greatly rougher in comparison with those without the TFC layer. Increasing surface roughness would enhance the membrane performance as it increases the mass transfer area and consequently, the water flux 35 . Figure 3 shows the pore size distribution of the obtained PVC HFs.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of PVC‐TFC hollow fibers for forward osmosis application

Al‐Musawy

Al-Furaiji

Alsalhy

2021

J of Applied Polymer Sci

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Forward osmosis (FO) is considered among the most encouraging water desalination processes as a result of its high performance and low energy demand. Thin‐film composite (TFC) hollow fibers (HF) were synthesized and examined in the FO process. Three different concentrations of polyvinyl chloride (PVC) support polymer were fabricated via the phase inversion technique. The polyamide layer was synthesized on the outer surface of the PVC‐HF substrate via interfacial polymerization (IP) reaction. To the best of our knowledge, PVC HF was used in this research for the first time as a support for TFC‐FO membranes. PVC HFs have high‐quality specifications that are expected to have outstanding performance in TFC‐FO applications, especially for water desalination. The obtained membranes were characterized using contact angle measurement, scanning electron microscopy, atomic force microscope and Fourier‐transform Infrared. The performance of the PVC‐TFC HF was examined in the FO under standard conditions. Results showed that the membrane fabricated with a lower concentration of PVC substrate exhibited higher water flux in comparison to the higher concentration PVC membrane. Changing the concentration of PVC from 15% to 18% reduced water flux from 25 to 13 L m−2 h−1; however, salt flux also decreased from 8 to 3 g m−2 h−1.

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“…PVC is one of the most widely used polymers for the fabrication of UF membranes due to its chemical stability and competitive cost. Some blending modifiers, such as lignin, 17 polyvinyl butyral, 18 polyvinyl pyrrolidone (PVP), 19 poly(ethylene glycol), 20 multi-walled carbon nanotube-grafted-graphene oxide, 21 SiO 2 22 and TiO 2 23 nanoparticles, have been applied to improve the hydrophilicity and antifouling performance of PVC UF membranes. However, it still remains a great challenge to achieve hydrophilicity and immobilize metal catalysts simultaneously because PVC is incompatible with most hydrophilic polymers and lacks reactive groups.…”

Section: Introductionmentioning

confidence: 99%