title: Calcium-alginate/carbon nanotubes/TiO2composite beads for removal of bisphenol A.
abstract: In this study, composite calcium-alginate/carbon nanotubes/TiO2beads were prepared and tested for their potential in the removal of bisphenol A (BPA) from aqueous solutions. The removal traits were inspected using a fixed-bed sorption column. By varying parameters such as bed height (15-20 cm), flow rate (2.0-6.0 mL.min-1) and inlet BPA concentration (10-30 mg.L-1) we assessed the removal capacity of these composites. The highest sorption capacity of 5.46 mg.g-1was achieved at 10 mg.L-1BPA concentration, 2.0 mL.min-1flow rate and 20 cm bed height at saturation. Adams-Bohart, Yoon-Nelson and Dose-Response isotherm models were applied to evaluate the performance of the column at different inlet concentrations. The experimental data satisfactorily fit the Dose-Response model with high correlation (r2> 0.97) across the breakthrough curve. Regeneration of the used adsorbent beads were performed by immersion in the desorption solvent followed by light irradiation. It was postulated that inclusion of TiO2facilitates the desorbed pollutant degradation from the used adsorbent beads.
authors.affiliation: School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: arielkus@bgu.ac.il.
authors.forename: Maria R
authors.initials: MR
authors.lastname: Hartono
authors.affiliation: School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: arielkus@bgu.ac.il; Avram and Stella Goldstein-Goren, The Department of Biotechnology Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva 84105, Israel and The Ilse Katz Centre for Meso and Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
authors.forename: Ariel
authors.initials: A
authors.lastname: Kushmaro
authors.affiliation: School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: arielkus@bgu.ac.il; Avram and Stella Goldstein-Goren, The Department of Biotechnology Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva 84105, Israel and The Ilse Katz Centre for Meso and Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Marks
authors.affiliation: School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: arielkus@bgu.ac.il.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D000464:Alginates / Q000737:chemistry*; D001559:Benzhydryl Compounds / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D008962:Models, Theoretical; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D000098826:Bisphenol A Compounds
chemical_list: D000464:Alginates; D001559:Benzhydryl Compounds; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D037742:Nanotubes, Carbon; D010636:Phenols; D014025:Titanium; C009495:titanium dioxide; C006780:bisphenol A; D000098826:Bisphenol A Compounds