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dc.contributor.authorCihanoğlu, Aydın
dc.contributor.authorAlsoy Altınkaya, Sacide
dc.date.accessioned2020-02-05T08:26:39Z
dc.date.available2020-02-05T08:26:39Z
dc.date.issued2018-12en_US
dc.identifier.citationCihanoğlu, A., and Alsoy Altınkaya, S. (2018). A facile approach for preparation of positively charged nanofiltration membranes by in-situ crosslinking between polyamide-imide and polyethylenimine. Separation and Purification Technology, 207, 353-362. doi:10.1016/j.seppur.2018.06.020en_US
dc.identifier.issn1383-5866
dc.identifier.urihttps://doi.org/10.1016/j.seppur.2018.06.020
dc.identifier.urihttps://hdl.handle.net/11147/7661
dc.description.abstractPolyamide-imides (PAI) are attractive materials for membrane formation due to their high chemical and thermal stability. In this study, we report a facile approach for preparing positively charged nanofiltration (NF) membranes using a one-step process. Polyethylenimine (PEI) was dissolved in a coagulation bath and formed in-situ ionic crosslinking with PAI during phase inversion. The membranes were characterized by attenuated total reflectance Fourier Transform Infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), atomic force microscopy (AFM), contact angle and zeta potential measurements. The most positively charged membrane was obtained when the pH of the coagulation bath was adjusted to 10. This membrane showed a significant decrease in contact angle and surface roughness and increase in the pure water permeability (PWP) compared to the plain PAI membrane. The salt rejection performance of the crosslinked PAI membrane was measured using MgCl2, CaCl2, NaCl and Na2SO4 salts. The rejection of Mg2+ and Ca2+ ions was found to be 95.6% and 90.2%, respectively. The crosslinked membrane showed excellent chemical stability when stored in HCl solution at pH 3 up to 7 days. Antifouling behaviour of the optimized membrane was tested using bovine serum albumin (BSA) and flux recovery ratio of the membrane was found to be 92.2% at the end of 3 h filtration. The results suggest that the positively charged PAI membranes crosslinked with PEI may have a potential in recovering valuable cationic metals from acid mine wastewater.en_US
dc.description.sponsorshipTUBITAKen_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.isversionof10.1016/j.seppur.2018.06.020en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectIn-situ crosslinkingen_US
dc.subjectPhase inversionen_US
dc.subjectPolyethylenimineen_US
dc.subjectNanofiltration membranesen_US
dc.subjectMembraneen_US
dc.subjectPolyamide-imideen_US
dc.titleA facile approach for preparation of positively charged nanofiltration membranes by in-situ crosslinking between polyamide-imide and polyethylenimineen_US
dc.typearticleen_US
dc.contributor.authorID0000-0002-7049-7425en_US
dc.contributor.institutionauthorCihanoğlu, Aydın
dc.contributor.institutionauthorAlsoy Altınkaya, Sacide
dc.relation.journalSeparation and Purification Technologyen_US
dc.contributor.departmentIzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume207en_US
dc.identifier.startpage353en_US
dc.identifier.endpage362en_US
dc.identifier.wosWOS:000445987500038
dc.identifier.scopusSCOPUS:2-s2.0-85049313271
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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