Supplementary material from "Application of a triblock copolymer additive modified polyvinylidene fluoride membrane for effective oil/water separation"
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A hollow fibre membrane was fabricated by blending polyvinylidene fluoride (PVDF) with a triblock copolymer additive polymer that has both hydrophilic and oleophobic surface properties. The novel membrane was characterized and examined for oil/water separation under various system conditions, including different cross-flow rate, feed temperature, trans-membrane pressure, and its rejection and cleaning efficiency, etc. By applying the membrane into the filtration of synthesized oil/water emulsion, the membrane constantly achieved an oil rejection rate of above 99%, with a relatively constant permeate flux varied in the range of 68.9–59.0 l m−2 h−1. More importantly, the fouling of the used membrane can be easily removed by simple water flushing. The membrane also demonstrated a wide adaptability for different types of real oily wastewater, even at very high feed oil concentration (approx. 115 000 mg l−1 in terms of chemical oxygen demand (COM)). Hence, the novel triblock copolymer additive-modified PVDF membrane can have a great prospect in the continuing effort to expand the engineering application of polymeric membranes for oily wastewater treatment.
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SHEN, S. S.; Liu, K. P.; Yang, J. J.; Li, Y.; Bai, R. B.; Zhou, X. J. (2018). Supplementary material from "Application of a triblock copolymer additive modified polyvinylidene fluoride membrane for effective oil/water separation". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.4074848.v2