title: Succinate Functionalization of Hyperbranched Polyglycerol-Coated Magnetic Nanoparticles as a Draw Solute During Forward Osmosis.
abstract: Hyperbranched polyglycerol-coated magnetic nanoparticles (SHPG-MNPs) were functionalized with succinate groups to form a draw solute for use in a forward osmosis (FO). After the one-step synthesis of hyperbranched polyglycerol-coated magnetic nanoparticles (HPG-MNPs), the polyglycerol groups on the surfaces of the HPG-MNPs were functionalized with succinic anhydride moieties. The resulting SHPG-MNPs showed no change of size and magnetic property compared with HPG-MNPs and displayed excellent dispersibility in water up to the concentration of 400 g/L. SHPG-MNPs solution showed higher osmotic pressure than that of HPG-MNPs solution due to the presence of surface carboxyl groups in SHPG-MNPs and could draw water from a feed solution across an FO membrane without any reverse draw solute leakage during FO process. Moreover, the water flux remained nearly constant over several SHPG-MNP darw solute regeneration cycles applied to the ultrafiltration (UF) process. The SHPG-MNPs demonstrate strong potential for use as a draw solute in FO processes.
authors.forename: Hee-Man
authors.initials: HM
authors.lastname: Yang
authors.forename: Hye Min
authors.initials: HM
authors.lastname: Choi
authors.forename: Sung-Chan
authors.initials: SC
authors.lastname: Jang
authors.forename: Myeong Jin
authors.initials: MJ
authors.lastname: Han
authors.forename: Bum-Kyoung
authors.initials: BK
authors.lastname: Seo
authors.forename: Jei-Kwon
authors.initials: JK
authors.lastname: Moon
authors.forename: Kune-Woo
authors.initials: KW
authors.lastname: Lee
mesh_terms: D005990:Glycerol / Q000737:chemistry*; D008280:Magnetics; D053758:Nanoparticles / Q000737:chemistry*; D009995:Osmosis; D011108:Polymers / Q000737:chemistry*; D019802:Succinic Acid / Q000737:chemistry*
chemical_list: D011108:Polymers; C043941:polyglycerol; D019802:Succinic Acid; D005990:Glycerol