title: The use of superporous p(3-acrylamidopropyl)trimethyl ammonium chloride cryogels for removal of toxic arsenate anions.
abstract: Poly((3-Acrylamidopropyl)trimethylammonium chloride) (p(APTMACl)) cryogels were used as a superporous polymer network for the removal of toxic arsenate anions from an aqueous medium. The fast swelling in water, in about 7 s, was shown to be very useful leading to fast arsenate adsorption by p(APTMACl) cryogels within 30 min in comparison to 12 h for bulk common p(APTMACl) hydrogels. A maximum adsorption capacity of about 120 (mg/g) arsenate was obtained for p(APTMACl) cryogels. Both the Langmuir and Freundlich adsorption isotherms were applied for adsorption of arsenate anions by p(APTMACl) cryogels, and it was observed that the adsorption of arsenate anions by p(APTMACl) cryogels are represented better via Langmuir adsorption isotherm providing the R(2) value of 0.998. Furthermore, mag-p(APTMACl) cryogels were synthesized, and shown to be very useful in the fast removal of toxic arsenate anions. The mag-p(APTMACl) cryogels including the adsorbed arsenate were removed by an externally applied magnetic field, with some reduction in the arsenate ion adsorption capacity. It was also further demonstrated that p(APTMACl) cryogels can be reused in the adsorption of arsenate 5 times from aqueous environments without significant loss of adsorption capacity, from 113.47 ± 9 to 102.67 ± 6 mg/g.
authors.affiliation: Surfactants Research Chair, Department of Chemistry College of Science, King Saud University, P.O Box-2455, Riyadh 11451, Saudi Arabia; Department of Chemistry, Faculty of Science & Arts, Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey; Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey. Electronic address: sahiner71@gmail.com.
authors.forename: Nurettin
authors.initials: N
authors.lastname: Sahiner
authors.affiliation: Department of Chemistry, Faculty of Science & Arts, Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey; Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey.
authors.forename: Sahin
authors.initials: S
authors.lastname: Demirci
authors.affiliation: Leather Engineering Department, Faculty of Engineering, Ege University, Bornova, Izmir 35080, Turkey.
authors.forename: Mehtap
authors.initials: M
authors.lastname: Sahiner
authors.affiliation: Surfactants Research Chair, Department of Chemistry College of Science, King Saud University, P.O Box-2455, Riyadh 11451, Saudi Arabia.
authors.forename: Selahattin
authors.initials: S
authors.lastname: Yilmaz
authors.affiliation: Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey.
authors.forename: Hamad
authors.initials: H
authors.lastname: Al-Lohedan
mesh_terms: D000327:Adsorption; D000838:Anions / Q000737:chemistry; D001149:Arsenates / Q000737:chemistry*; D059985:Cryogels / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000838:Anions; D001149:Arsenates; D059985:Cryogels; D000644:Quaternary Ammonium Compounds; D014874:Water Pollutants, Chemical; C523720:(3-acrylamidopropyl)trimethylammonium chloride
keywords: Arsenate removal; Cationic magnetic-cryogel; Fast arsenic sorption; P(APTMACl) hydrogel/cryogel; Smart cryogel composites