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    Halloysite nanotube blended nanocomposite ultrafiltration membranes for reactive dye removal

    Year: 2021

    Journal: Water Sci. Technol., Volume 83, JAN 15, page 271–283

    Authors: Keskin, Basak; Agtas, Meltem; Ormanci-Acar, Turkan; Turken, Turker; Imer, Derya Y.; Unal, Serkan; Menceloglu, Yusuf Z.; Ucar-Demir, Tugba; Koyuncu, Ismail

    Organizations: Scientific and Technological Research Council of Turkey (TUBI.TAK) [113Y350, 113Y370, 113Y371, 113Y372]

    Keywords: dye rejection; flat-sheet membrane; halloysite nanotubes; ultrafiltration membrane

    In this paper, ultrafiltration (UF) flat sheet membranes were manufactured by introducing two diverse halloysite nanotubes (HNT) size (5 mu m and 63 mu m) and five different (0, 0.63, 1.88, 3.13, 6.30 wt %) ratios by wet phase inversion. Some characterization methods which are contact angle, zeta potential, viscosity, scanning electron microscopy (SEM) and Young's modulus measurements were used for ultrafiltration membranes. Synthetic dye waters which were Setazol Red and Reactive Orange were used for filtration performance tests. These dye solutions were filtered in three different pH conditions and three different temperature conditions for pH and temperature resistance to understand how flux and removal efficiency change. The best water permeability results were obtained as 190.5 LMH and 192 LMH, for halloysite nanotubes (HNT) sizes of 5 mu m and 63 mu m respectively. The best water and dye performance of UF membrane contains 1.88% w/w ratio of HNT, which showed increased water flux and dye flux of membranes according to different HNT concentrations including ultrafiltration membranes.
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