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Inventi Impact: Water & Environment

Articles

  • Inventi:ewe/43701/21
    Flue Gas Desulfurization (FGD) Wastewater Treatment Using Polybenzimidazole (PBI) Hollow Fiber (HF) Membranes
    01-Oct-2021 Research 2021 : October-December
    Michael Dean Wales, Eminet Gebremichael, Xiao Wang, Elisabeth Perea, Palitha Jayaweera, Indira Jayaweera

    Polybenzimidazole (PBI) hollow fiber membranes were used to treat flue gas desulfurization (FGD) wastewater (WW) from a coal fired power plant. Membranes were tested using both single salt solutions and real FGDWW. The PBI membranes showed >99% rejection for single salt solutions of NaCl, MgCl2, CaSO4, and CaCl2 at approximately 2000 PPM (parts per million). The membranes also showed >97% rejection for FGD WW concentrations ranging from 6900 to 14,400 PPM total dissolved solids (TDS). The pH of the FGDWWwas adjusted between 3.97–8.20, and there was an optimal pH between 5.31 and 7.80 where %rejection reached a maximum of >99%. The membranes were able to operate stably up to 50 C, nearly doubling the water flux as compared to room temperature, and while maintaining >98% salt rejection.

    How to Cite this Article
    Attribution/ CC Compliant Citation: Wales, M.D.; Gebremichael,E.; Wang, X.; Perea, E.; Jayaweera, P.; Jayaweera, I. Flue Gas Desulfurization (FGD)Wastewater Treatment Using Polybenzimidazole (PBI) Hollow Fiber (HF) Membranes. Membranes 2021, 11, 430. https://doi.org/10.3390/membranes11060430 http://creativecommons.org/licenses/by/4.0/ Some formatting elements, header, footer, logos, dates and pagination were modified while adapting this article.
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