title: An enquiry on appropriate selection of polymers for preparation of polymeric nanosorbents and nanofiltration/ultrafiltration membranes for hormone micropollutants removal from water effluents.
abstract: To analyze polymeric nanosorbents and nanofiltration/ultrafiltration membranes for hormone micropollutants removal from water effluents, here an in-through investigation on the suitability and compatibility of various polymers has been carried out. For this work, estradiol, estrone, testosterone, progesterone, estriol, mestranol, and ethinylestradiol were considered. A total number of 452 polymers were analyzed and initially screened using Hansen solubility parameters. The identified good pairs of hormones and polymers then were examined to obtain the equilibrium capacity of hormones removal from water effluents using a modified Flory-Huggins model. A distribution coefficient was defined as the ratio of hormones in water effluent phase and polymer phase. For removal of mestranol, estradiol and ethinylestradiol, no compatible polymer was identified based on initial screening of collected database. Three compatible polymers were identified for estriol. For progesterone, a wide variety of polymers was identified as good matching of polar, dispersion and hydrogen forces contributions can be observed for these pairs. For estrone, only two polymers can be proposed due to the mismatch observed between polar, dispersion and hydrogen forces contributions of other polymers and this hormone. The phase calculations showed that not all the identified good pairs could be used for practical separation applications. The domain of applicability of each good pair was investigated and potential polymers for practical micropollutants removal together with their removal capacity were represented in terms of phase envelops. The theoretical approach follows fundamental chemical thermodynamic equations and then can be simply applied for any system of interest.
authors: Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran. Electronic address: miladasgarpour@ut.ac.ir.
authors: Milad Asgarpour
authors: MA
authors: Khansary
authors: Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
authors: Mostafa
authors: M
authors: Mellat
authors: Behavioral Sciences Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
authors: Seyed Hassan
authors: SH
authors: Saadat
authors: Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
authors: Mahdi
authors: M
authors: Fasihi-Ramandi
authors: Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
authors: Mehdi
authors: M
authors: Kamali
authors: Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran. Electronic address: taheri@bmsu.ac.ir.
authors: Ramezan Ali
authors: RA
authors: Taheri
mesh_terms: D000327:Adsorption; D006728:Hormones / Q000032:analysis*; D008567:Membranes, Artificial; D008962:Models, Theoretical; D049329:Nanostructures / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012995:Solubility; D013816:Thermodynamics; D014462:Ultrafiltration; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D006728:Hormones; D008567:Membranes, Artificial; D011108:Polymers; D014874:Water Pollutants, Chemical
keywords: Hansen parameter; Hormones micropollutants; Phase envelops; Polymers; Sorption