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

Abstract

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...

Visible-Light Active Photocatalytic Dual Layer Hollow Fiber (DLHF) Membrane and Its Potential in Mitigating the Detrimental Effects of Bisphenol A in Water

“…The tensile strength and elongation at break of TiO 2 -P25/PVDF DLHF are slightly higher than N-doped TiO 2 DLHF. This might due to its thicker outer layer, hence stronger structure as compared to single layer hollow fiber membrane (SLHF) reported in previous finding [23]. Interestingly, the presence of N-doped TiO 2 and TiO 2 -P25 particle at the outer membrane layer has improved the membrane hydrophilicity properties.…”