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Synthesis of hydrous zirconium oxide-impregnated chitosan beads and their application for removal of fluoride and lead

Title
Synthesis of hydrous zirconium oxide-impregnated chitosan beads and their application for removal of fluoride and lead
Author
전병훈
Keywords
Hydrous zirconium oxide;; Chitosan beads; Fluoride; Lead; Sorption
Issue Date
2016-05
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED SURFACE SCIENCE, v. 372, Page. 13-19
Abstract
A composite adsorbent capable of simultaneous removal of both cationic and anionic contaminants from aqueous solutions was developed by impregnating hydrous zirconium oxide (HZO) into chitosan beads (CB). The optimal mass ratio of chitosan to HZO was 2:2. The composite adsorbent (HZOCB) had the rugged surface (52.74 m(2) g(-1)) with irregular cracks caused by HZO inclusion and amine functional groups. The rate of Pb2+ adsorption by HZOCB was relatively rapid. Most of Pb2+ (89%) was adsorbed within 2.5 h. A binary sorbate system was noticeably favorable for F- adsorption as compared to single sorbate system. Adsorption of F- and Pb2+ followed pseudo-second order kinetics. The maximum sorption capacities obtained from Langmuir isotherm model were 22.1 and 222.2 mg g(-1), respectively. The study demonstrates that the developed composite could be a potential adsorbent for the simultaneous remediation of F- and Pb2+ contamination in water. (C) 2016 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S016943321630513X?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/71579
ISSN
0169-4332; 1873-5584
DOI
10.1016/j.apsusc.2016.03.068
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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