(Membran fiber berongga fotomangkin selulosa asetat-tio2 bagi degradasi metilena biru)

Methylene blue (MB) used in the textile industry can cause environmental damage. Photocatalytic hollow fibre membrane (PHFM) was employed in the degradation of synthetic MB dye. This research aimed to determine the optimum concentration of TiO2 addition on the characteristic and performance of cellulose acetate-TiO2 PHFM for the degradation of synthetic MB dye. Hollow fibre membrane was prepared from the phase inversion method using a dope solution with the ratio of CA, formamide, and acetone of 22%:27%:51%, and TiO2 was then added with various concentrations of 0.10%, 0.15%, 0.20%, 0.25%, and 0.30% (w/w). The results showed that the optimum concentration of TiO2 addition to the hollow fibre membrane was 0.25% (w/w). The characterisation of PHFM involved strain, stress, Young’s modulus, flux, rejection, SEM, FTIR, and efficiency degradation for MB, while the characterisation of CA-TiO2 PHFM involved thickness, stress, strain and Young’s Modulus, i.e., 0.15 mm, 5.5 × 10² kN/mm², 0.13, and 4.2 × 10³ kN/mm², respectively. The flux and rejection performance of PHFM with MB feed were 25.66 L/m².h and 94.8%, respectively. The total efficiency of CA-TiO2 PHFM application for MB degradation was 98.9%, and waste textile dye was 82.6%. PHFM was capable of degrading the synthetic MB.