메조 세공 제올라이트 Y가 코팅 된 알루미나 중공사막을 이용한 중금속 흡착

Abstract

In this study, mesoporous-zeolite-Y-coated alumina hollow fiber membranes were prepared by optimizing the synthesis conditions and using commercial zeolite Y, CTAB, as the structure-directing agent and alumina hollow fiber membranes. The removal of heavy metals was investigated using these membranes. The synthesized membranes were characterized with X-ray diffraction, field emission scanning electron microscopy, nitrogen adsorption-desorption analysis, field emission transmission electron microscopy, Fourier transform infrared spectroscopy, and the heavy metal adsorption activity of these membranes was investigated with ultraviolet-visible spectroscopy. Batch tests were conducted to investigate the capabilities of the mesoporous-zeolite-Y-coated membranes in removing Mn (II) and Fe (II)fromaqueoussolutions.Nitrogen full isotherm analyses confirmed that the synthesized mesoporous adsorbents were homogenously mesoporous. These results suggest that the mesoporous-zeolite-Y-coated membranes exhibited higher adsorption capacity than that of the alumina hollow fiber membranes. After three runs of heavy metal adsorption, there was no drop in the activity of the prepared mesoporous-zeolite-Y-coated alumina hollow fiber membranes because they were easier to separate and more durable than the conventional powdered adsorbents.