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Hartono MR, Kushmaro A, Marks RS, Chen X. Calcium-alginate/carbon nanotubes/TiO 2 composite beads for removal of bisphenol A. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:1585-1593. [PMID: 27763338 DOI: 10.2166/wst.2016.354] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, composite calcium-alginate/carbon nanotubes/TiO2 beads 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-1 was achieved at 10 mg.L-1 BPA concentration, 2.0 mL.min-1 flow 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 TiO2 facilitates the desorbed pollutant degradation from the used adsorbent beads.
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Affiliation(s)
- Maria R Hartono
- School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail:
| | - Ariel Kushmaro
- School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: ; 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
| | - Robert S Marks
- School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail: ; 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
| | - Xiaodong Chen
- School of Materials Science & Engineering, Nanyang Technological University, Block N3.1-B3a-02, 50 Nanyang Avenue, Singapore 639798, Singapore E-mail:
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Lu Y, He J, Wu L, Luo G. Relationship between breakthrough curve and adsorption isotherm of Ca(II) imprinted chitosan microspheres for metal adsorption. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2015.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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