This work reports a study on employing lignin in the formation of a selective layer of thin-film composite (TFC) membranes for pervaporation desalination. The TFC membranes with lignin-based separation layers are fabricated using a solution-casting method. With a reduction of the separation layer thickness to about 0.47 μm, a water permeation flux of 18.5 kg h-1 m-2 and a salt rejection of above 99.95% have been recorded on the lignin based TFC membrane with a feeding solution of 3.5 wt% NaCl(aq) at 45 °C. The membrane also exhibits high stability in long-term operation tests and can be applied for operations on high salinity water (up to 15 wt% NaCl(aq)). While being applied to seawater desalination, the membrane exhibits a water permeation flux of about 20.4 kg h-1 m-2 and a salt rejection of above 99.95% at 45 °C. A membrane separation process, which uses sustainable materials for salty wastewater treatments and water resource generation, has been demonstrated.
CITATION STYLE
Chen, Y. T., Sun, Y. M., Hu, C. C., Lai, J. Y., & Liu, Y. L. (2021). Employing lignin in the formation of the selective layer of thin-film composite membranes for pervaporation desalination. Materials Advances, 2(9), 3099–3106. https://doi.org/10.1039/d1ma00150g
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