Abstract
The generation of large volume of produced water necessitates a chemically stable membrane with high water permeability for the removal of oil emulsion. In this work, a zeolitic imidazolate framework-8 (ZIF-8) based thin film nanocomposite (TFN) membrane with improved pure water permeability and chemical stability was developed. It was found that poly(sodium 4-styrenesulfonate) (PSS) coating could stabilize the ZIF-8 particles against dissolution in water. This subsequently allowed the proper formation of TFN membrane with comparable separation properties as the thin film composite (TFC) membrane. With the further use of triethylamine (TEA) as an acid acceptor in interfacial polymerization, the pure water permeability of TFN membrane improved significantly over both TFC and TFN membranes synthesized without TEA with minimal loss in NaCl rejection. The enhanced water transport of TFN membrane was further manifested by the higher flux of TFN membrane compared to TFC membrane in forward osmosis (FO) filtration of both synthetic high salinity oil emulsion and real produced water. In addition, due to the chemically stable ZIF-8 particles, the TFN membrane was demonstrated to have a better swelling resistance against produced water than the TFC membrane.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
