Fabrication of Dual Layer Hollow Fibre Membranes for Photocatalytic Degradation of Organic Pollutants

Dzinun, Hazlini; Othman, Mohd Hafiz Dzarfan; Ismail, Ahmad Fauzi; Puteh, Mohd Hafiz; Rahman, Mukhlis A.; Jaafar, Juhana

doi:10.7763/ijcea.2015.v6.499

Cited by 6 publications

(8 citation statements)

References 20 publications

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“…It could be observed from contact angle analysis as listed in Table 2. This finding is accordingly with the findings reported by Dzinun et al [22]. The presence of hydrophilic nature of TiO 2 particle at the outer layer of the DLHF membranes has successfully improved the hydrophilicity of the membrane, which higher affinity towards water is better for water-related separation process.…”

Section: Characterization Of the Dual Layer Hollow Fiber Membranesupporting

confidence: 91%

The Morphological Properties Study of Photocatalytic Tio2/PVDF Dual Layer Hollow Fiber Membrane for Endocrine Disrupting Compounds Degradation

Kamaludin

Othman²,

Kadir

et al. 2017

MJAS

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Various Endocrine Disrupting Compounds (EDCs) either natural or synthetics have been identified including bisphenol A (BPA), dioxin, polychlorinated biphenyls, and dichlorodiphenyltrichloroethane (DDT). These compounds which present widely in the product of solvent industry, agricultural, pharmaceuticals and household convenience may directly or indirectly interrupt the normal function of endocrine system. Recently, the EDCs threats to human health have led to the increasing demand of clean water sources which excites a challenge for the contaminants removal processes. Conventional treatment methods may not completely remove the contaminants, meanwhile advanced oxidation process (AOPs) especially photocatalysis have been proven efficient in removing the contaminants. Even though photocatalysis is efficient in suspension of either nano-or microscale, the immobilizing TiO 2 in the membrane matrix for catalyst separation purposes have decreased the adsorption of organic substances on the TiO 2 surface with potential loss of TiO 2 during long-time usage. This lead to the emerging in the exploration and fabrication of dual layer hollow fiber (DLHF) membrane for better performance of immobilized TiO 2 . Therefore, we exploit this fact to investigate the incorporation of photocatalysis into dual-layer hollow fiber membrane which are believed may improve the photocatalytic degradation and separation efficiency. The FESEM results showed that both layers are compatible with each other and there are no delamination found between layers. The presence of outer layer does not influence the surface roughness; however improve the hydrophilicity and membrane strength. Altogether, photocatalytic dual layer hollow fiber (DLHF) membrane was successfully fabricated using co-extrusion technique. AbstrakPelbagai sebatian pengganggu endokrin sama ada semula jadi atau buatan telah dikenalpasti termasuk bisphenol A (BPA), dioxin, polychlorinated biphenyls, dan dichlorodiphenyltrichloroethane (DDT). Sebatian ini yang wujud secara meluas di dalam produk industri pelarut, pertanian, farmaseutikal, dan keperluan rumah mampu menggangu secara lansung atau tidak langsung fungsi normal sistem endokrin. Baru-baru ini, ancaman sebatian pengganggu endokrin kepada kesihatan manusia telah membawa kepada peningkatan permintaan sumber air bersih yang merangsang satu cabaran bagi proses penyingkiran bahan pencemaran.. Kaedah rawatan konvensional mungkin tidak membuang bahan pencemaran dengan sepenuhnya, tetapi proses pengoksidaan maju (AOP) terutama fotopemangkinan telah terbukti berkesan dalam menyingkirkan bahan pencemaran. Walaupun fotopemangkinan cekap dalam skala nano atau skala hablur pemangkin, immobilisasi TiO 2 ke dalam matriks membran untuk ISSN 1394 -2506 Roziana et al: THE MORPHOLOGICAL PROPERTIES STUDY OF PHOTOCATALYTIC TIO 2 /PVDF DUAL LAYER HOLLOW FIBER MEMBRANE FOR ENDOCRINE DISRUPTING COMPOUNDS DEGRADATION 427 tujuan pemisahan pemangkin telah mengurangkan penyerapan bahan pencemar di permukaan TiO 2 dengan potensi kerugian TiO 2 untuk pe...

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Section: Characterization Of the Dual Layer Hollow Fiber Membranesupporting

confidence: 91%

The Morphological Properties Study of Photocatalytic Tio2/PVDF Dual Layer Hollow Fiber Membrane for Endocrine Disrupting Compounds Degradation

Kamaludin

Othman²,

Kadir

et al. 2017

MJAS

View full text Add to dashboard Cite

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“…The figure shows that the resultant membranes also have porous sponge-like structures, accordingly with increasing loadings of ZnO nanoparticles. Increased pore size accordingly with the increase in the amount of ZnO loadings, was due to the attraction of large water flow into the membrane pores resulting from the increasing in the membrane hydrophilicity [22]. Long finger-like and porous membrane structure may increase the water flux through the membrane.…”

Section: Physical Propertiesmentioning

confidence: 99%

Polyvinylidene Difluoride (PVDF) Hollow Fiber Membrane Incorporated with Antibacterial and Anti-Fouling by Zinc Oxide for Water and Wastewater Treatment

et al. 2022

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The addition of antibacterial material to hollow fiber membranes improves the membrane anti-biofouling characteristics. Antibacterial membranes were fabricated in this study to improve membrane function while also extending membrane lifetime. Neat polyvinylidene difluoride (PVDF) and PVDF hollow fiber membrane with the incorporation of antibacterial agent zinc oxide (ZnO) nanoparticles with various loading (2.5–7.5 wt.%) were fabricated by using dry/wet spinning method. The membrane structure, particle distribution, functional group, hydrophilicity, and pore size of each membrane were all assessed. The result shows that all ZnO/PVDF hollow fiber membranes have the asymmetric structure with even dispersion of ZnO nanoparticles throughout the membranes. The results showed that increased ZnO loadings considerably improved membrane hydrophilicity, and average pore size, in addition to good performance of pure water flux. Antibacterial testing shows that ZnO incorporated in the membrane matrix and membrane surfaces prevents bacteria that cause biofouling from adhering to the membrane. ZnO/PVDF membrane recorded excellent bovine serum albumin (BSA) rejection at 93.4% ± 0.4 with flux recovery rate at 70.9% ± 2.1. These results suggest that antibacterial ZnO/PVDF hollow fiber membranes are promising in relation to reducing biofouling for various water and wastewater treatment.

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“…The addition of PEG 6000 to the inner layer dope solution causes the creation of large finger-like structures in the Cu 2 O/PVDF DLHF membrane. The pore former is added to make the membrane more porous, allowing for higher water flux and solute rejection [39]. The addition of Cu 2 O to the PVDF membrane's outer layer improves the membrane's hydrophilicity [40].…”

Section: Resultsmentioning

confidence: 99%

Bisphenol A Removal Using Visible Light Driven Cu2O/PVDF Photocatalytic Dual Layer Hollow Fiber Membrane

et al. 2022

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Bisphenol A (BPA) is amongst the endocrine disrupting compounds (EDCs) that cause illness to humans and in this work was removed using copper (I) oxide (Cu2O) visible light photocatalyst which has a narrow bandgap of 2.2 eV. This was done by embedding Cu2O into polyvinylidene fluoride (PVDF) membranes to generate a Cu2O/PVDF dual layer hollow fiber (DLHF) membrane using a co-extrusion technique. The initial ratio of 0.25 Cu2O/PVDF was used to study variation of the outer dope extrusion flowrate for 3 mL/min, 6 mL/min and 9 mL/min. Subsequently, the best flowrate was used to vary Cu2O/PVDF for 0.25, 0.50 and 0.75 with fixed outer dope extrusion flowrate. Under visible light irradiation, 10 mg/L of BPA was used to assess the membranes performance. The results show that the outer and inner layers of the membrane have finger-like structures, whereas the intermediate section of the membrane has a sponge-like structure. With high porosity up to 63.13%, the membrane is hydrophilic and exhibited high flux up to 13,891 L/m2h. The optimum photocatalytic membrane configuration is 0.50 Cu2O/PVDF DLHF membrane with 6 mL/min outer dope flowrate, which was able to remove 75% of 10 ppm BPA under visible light irradiation without copper leaching into the water sample.

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Fabrication of Dual Layer Hollow Fibre Membranes for Photocatalytic Degradation of Organic Pollutants

Cited by 6 publications

References 20 publications

The Morphological Properties Study of Photocatalytic Tio2/PVDF Dual Layer Hollow Fiber Membrane for Endocrine Disrupting Compounds Degradation

The Morphological Properties Study of Photocatalytic Tio2/PVDF Dual Layer Hollow Fiber Membrane for Endocrine Disrupting Compounds Degradation

Polyvinylidene Difluoride (PVDF) Hollow Fiber Membrane Incorporated with Antibacterial and Anti-Fouling by Zinc Oxide for Water and Wastewater Treatment

Bisphenol A Removal Using Visible Light Driven Cu2O/PVDF Photocatalytic Dual Layer Hollow Fiber Membrane

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