title: Preparation of polyethersulfone-organophilic montmorillonite hybrid particles for the removal of bisphenol A.
abstract: Polyethersulfone (PES)-organophilic montmorillonite (OMMT) hybrid particles, with various proportions of OMMT, were prepared by using a liquid-liquid phase separation technique, and then were used for the removal of bisphenol A (BPA) from aqueous solution. The adsorbed BPA amounts increased significantly when the OMMT were embedded into the particles. The structure of the particle was characterized by using scanning electron microscopy (SEM); and these particles hardly release small molecules below 250 degrees C which was testified by using thermogravimetric analysis (TGA). The experimental data of BPA adsorption were adequately fitted with Langmuir equations. Three simplified kinetics model including the pseudo-first-order (Lagergren equation), the pseudo-second-order, and the intraparticle diffusion model were used to describe the adsorption process. Kinetic studies showed that the adsorbed BPA amount reached an equilibrium value after 300 min, and the experimental data could be expressed by the intraparticular mass transfer diffusion model. Furthermore, the adsorbed BPA could be effectively removed by ethanol, which indicated that the hybrid particles could be reused. These results showed that the PES-OMMT hybrid particles have the potential to be used in the environmental application.
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Fuming
authors.initials: F
authors.lastname: Cao
authors.forename: Pengli
authors.initials: P
authors.lastname: Bai
authors.forename: Haocheng
authors.initials: H
authors.lastname: Li
authors.forename: Yunli
authors.initials: Y
authors.lastname: Ma
authors.forename: Xiaopei
authors.initials: X
authors.lastname: Deng
authors.forename: Changsheng
authors.initials: C
authors.lastname: Zhao
mesh_terms: D000327:Adsorption; D001546:Bentonite / Q000737:chemistry*; D001559:Benzhydryl Compounds; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010636:Phenols / Q000302:isolation & purification*; D011108:Polymers / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D000098826:Bisphenol A Compounds
chemical_list: D001546:Bentonite; D001559:Benzhydryl Compounds; D010636:Phenols; D011108:Polymers; D013450:Sulfones; C022840:polyether sulfone; C006780:bisphenol A; D000098826:Bisphenol A Compounds