Abstract
Textile dyeing industry (TDI) produced huge amount of methanol effluent. An organic solvent nanofiltration (OSN) membrane owns ultra-high methanol permeance was developed in this study with a highly reactive and chemically stable symmetrical dianiline structure into its active layer. The so-called “BHTTM” molecule owns double trifluoromethyl (CF3) which offers polarity and negative charge while the matrix was doped with positively charged processed glass wool fiber (GWF-NH2) to form a specific active layer/area. FT-IR and EDX results demonstrated the successful introduction of BHTTM and their specific morphology were captured by FE-SEM. The membrane offered molecular weight cut-off value of 441.9 in water but smaller in organic solvents. It displayed outstanding OSN performance in which the methanol permeance reached 117.2 ± 9.8 L m−2 h−1 MPa−1 with 99.5 ± 0.1% rejection of Chlorazol black and methanol effluent with Rose bengal was also totally decolorized (99.5 ± 0.2%).
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